A control system, method and treatment system for refining wastewater treatment

Abstract

The present invention provides a control system, method and treatment system for treating wastewater in a refinery, the control system comprising a central control device and a data monitoring device; the data monitoring device is used to collect water inlet characteristic parameter data of a wastewater homogenizing device, and collect water quality state parameter data in a pool of a wastewater treatment device, and send the data to the central control device; the central control device is used to determine a feedforward adjustment instruction for controlling the wastewater treatment device according to the water inlet characteristic parameter data and / or the water quality state parameter data in the pool, and determine a feedback adjustment instruction for controlling the wastewater treatment device according to the water quality state parameter data in the pool, and send the feedforward adjustment instruction and / or the feedback adjustment instruction to the corresponding controlled device of the wastewater treatment device to control the controlled device to adjust the working state. Automatic control of the controlled device is achieved through feedforward adjustment, and the operating parameters of the controlled device are corrected through feedback adjustment, which has a higher degree of intelligence and more accurate control and adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and more specifically, to a control system for refining wastewater treatment, a control method for a control system for refining wastewater treatment, and a refining wastewater treatment system. Background Art

[0002] Refinery wastewater mainly comes from industrial sectors such as petroleum and petrochemicals. In the process of petroleum refining, the wastewater generated is refinery wastewater. Refinery wastewater is a typical industrial wastewater, mainly composed of harmful and difficult-to-degrade organic pollutants such as long-chain alkanes, lipids, and volatile phenols. It is usually treated by pretreatment + biological treatment + deep treatment. The treatment process has difficulties such as poor water biodegradability, obvious impact effect, and frequent adjustment of operating parameters. If the treatment of refinery wastewater does not meet the standards, it will have adverse effects on humans, animals, plants and even the entire ecosystem. Its hazards are mainly manifested in the formation of an oil film on the water surface, which can hinder the reoxygenation of the water body. Due to the reduction of dissolved oxygen in the water body, the photosynthesis of algae is restricted, affecting the normal growth of aquatic organisms, making aquatic plants and animals have an oily smell or toxicity, and even making the water body smelly, destroying the utilization value of water resources; oil adheres to the gills of fish, which can suffocate the fish. When the concentration is 200mg / L, the fish cannot survive; it adheres to algae and plankton, which can kill them; oil inhibits the laying and hatching of water birds, and in severe cases causes a large number of bird deaths; when using oily wastewater to irrigate farmland, oil and its derivatives will cover the surface of soil and plants, block the pores of the soil, prevent air from penetrating, and prevent the soil and microorganisms from normal metabolism, so that the quality and practical value of agricultural products will decline, and in severe cases, it will cause crop yield reduction or death. Oil migrates downward in the soil and may also cause serious groundwater pollution. In summary, refinery wastewater can cause devastating damage to the ecosystem and pose potential hazards to human health. Summary of the invention

[0003] In view of the problems existing in the related art, the purpose of the present invention is to provide a control system for refinery wastewater treatment, a control method for a control system for refinery wastewater treatment and a refinery wastewater treatment system.

[0004] As one aspect of an embodiment of the present invention, it relates to a control system for treating wastewater from a refinery, which is applied to a wastewater treatment system, wherein the wastewater treatment system comprises a wastewater homogenization device and at least one of the following wastewater treatment devices: an anaerobic biological reaction device, an anoxic biological reaction device, an aerobic biological reaction device, a sedimentation device, a monitoring and discharge device, and an accident buffer device, wherein the control system comprises a central control device and a data monitoring device;

[0005] The data monitoring device is used to collect the water inlet characteristic parameter data of the sewage homogenization device, and collect the water quality state parameter data in the pool of the sewage treatment device, and send them to the central control device; the water inlet characteristic parameter data includes at least one of the following data: water quality data of the inlet water, water flow data of the inlet water and water level data of the inlet water; the water quality state parameter data in the pool includes at least one of the following data: COD concentration data, pH value data, dissolved oxygen concentration data, sludge amount data, ammonia nitrogen concentration data and total nitrogen concentration data;

[0006] The central control device is used to determine the feedforward adjustment instructions for controlling the sewage treatment device based on the water inlet characteristic parameter data and / or the water quality status parameter data in the pool, and to determine the feedback adjustment instructions for controlling the sewage treatment device based on the water quality status parameter data in the pool, and send the feedforward adjustment instructions and / or feedback adjustment instructions to the corresponding controlled equipment of the sewage treatment device to control the controlled equipment to adjust the working state.

[0007] In one or some optional embodiments, the central control device includes a communication module and an analysis and calculation module;

[0008] The communication module is used to send the received water inlet characteristic parameter data and / or the water quality status parameter data in the pool to the analysis and calculation module; and send the received feedforward adjustment instructions and feedback adjustment instructions to the controlled device;

[0009] The analysis and calculation module is used to determine the feedforward adjustment instruction according to the water inlet characteristic parameter data and / or the water quality status parameter data in the pool, and to determine the feedback adjustment instruction according to the water quality status parameter data in the pool, and send the feedforward adjustment instruction and / or the feedback adjustment instruction to the communication module.

[0010] In one or some optional embodiments, the analysis and calculation module includes a data processing model submodule and a control decision submodule;

[0011] The data processing model submodule is used to obtain the feedforward amount to be adjusted in the sewage treatment device according to the influent characteristic parameter data and / or the water quality state parameter data in the pool in a preset activated sludge model, and send it to the control decision submodule; and, in the activated sludge model, obtain the feedback amount to be adjusted in the sewage treatment device according to the water quality state parameter data in the pool;

[0012] The control decision submodule is used to obtain the operating parameters of the corresponding controlled equipment of the sewage treatment device according to the feedforward amount to be adjusted, and determine the feedforward adjustment instruction according to the operating parameters of the controlled equipment; and to obtain the operating parameters to be adjusted of the controlled equipment according to the feedback amount to be adjusted and the current operating parameters of the controlled equipment, and determine the feedback adjustment instruction according to the operating parameters to be adjusted of the controlled equipment.

[0013] In one or some optional embodiments, the influent water quality data includes influent total nitrogen concentration, influent COD concentration and influent ammonia nitrogen concentration;

[0014] The data monitoring device includes an inlet total nitrogen concentration monitoring device, an inlet COD concentration monitoring device and an inlet ammonia nitrogen concentration monitoring device;

[0015] The inlet total nitrogen concentration monitoring device is used to monitor the inlet total nitrogen concentration of the sewage homogenization device;

[0016] The inlet COD concentration monitoring device is used to monitor the inlet COD concentration of the sewage homogenization device;

[0017] The inlet ammonia nitrogen concentration monitoring device is used to monitor the inlet ammonia nitrogen concentration of the sewage homogenization device.

[0018] In one or some optional embodiments, the anoxic bioreactor comprises an anoxic tank and a carbon source dosing device;

[0019] The data processing model submodule is specifically used to obtain the feedforward carbon source dosage parameter data in the anoxic tank according to the influent total nitrogen concentration and the influent COD concentration in the activated sludge model;

[0020] The control decision submodule is specifically used to obtain the feedforward operating parameters of the carbon source dosing equipment according to the feedforward carbon source dosage parameter data, and determine the feedforward adjustment instruction according to the feedforward operating parameters.

[0021] In one or some optional embodiments, the data monitoring device includes an anoxic pool total nitrogen concentration monitoring device and an anoxic pool COD concentration monitoring device; the anoxic pool total nitrogen concentration monitoring device is used to monitor the total nitrogen concentration in the anoxic pool; the COD concentration monitoring device is used to monitor the COD concentration in the anoxic pool;

[0022] The data processing model submodule is also used to obtain the parameter data of the carbon source dosage in the anoxic tank according to the total nitrogen concentration in the anoxic tank and the COD concentration in the anoxic tank in the activated sludge model;

[0023] The control decision submodule is also used to obtain the feedback operating parameters of the carbon source adding equipment according to the feedback carbon source addition amount parameter data and the current operating parameters of the carbon source adding equipment, and determine the feedback adjustment instructions according to the feedback operating parameters.

[0024] In one or some optional embodiments, the aerobic biological reaction device includes an aerobic tank, an alkali solution dosing device and an aeration device;

[0025] The data processing model submodule is specifically used to obtain the feedforward alkali dosage parameter data in the aerobic tank according to the influent ammonia nitrogen concentration in the preset activated sludge model, and to obtain the feedforward aeration parameter data in the aerobic tank according to the influent COD concentration;

[0026] The control decision submodule is specifically used to obtain the feedforward operating parameters of the alkali solution dosing equipment according to the feedforward alkali dosage parameter data, and to obtain the feedforward operating parameters of the aeration equipment according to the feedforward aeration volume parameter data, and to determine the feedforward adjustment instructions according to the feedforward operating parameters of the alkali solution dosing equipment and the feedforward operating parameters of the aeration equipment.

[0027] In one or some optional embodiments, the data monitoring device further includes a pH monitoring device and a dissolved oxygen monitoring device; the pH monitoring device is used to monitor the pH value data in the aerobic tank; the dissolved oxygen monitoring device is used to monitor the dissolved oxygen data in the aerobic tank;

[0028] The data processing model submodule is also used to obtain the feedback alkali dosage parameter data in the aerobic tank according to the pH value data in the preset activated sludge model, and to obtain the feedback aeration parameter data in the aerobic tank according to the dissolved oxygen data;

[0029] The control decision submodule is further used to obtain the feedback operating parameters of the alkali solution dosing equipment according to the feedback alkali dosage parameter data and the current operating parameters of the alkali solution dosing equipment, and to obtain the feedback operating parameters of the aeration equipment according to the feedback aeration volume parameter data and the current operating parameters of the aeration equipment, and to determine the feedback adjustment instructions according to the feedback operating parameters of the alkali solution dosing equipment and the feedback operating parameters of the aeration equipment.

[0030] In one or some optional embodiments, the sewage treatment device further comprises a sewage return pump; the inlet of the sewage return pump is connected to the outlet of the aerobic tank, and the outlet of the sewage return pump is connected to the anoxic tank of the anoxic biological reaction device;

[0031] The data monitoring device also includes an anoxic pool effluent total nitrogen monitoring device for monitoring the effluent total nitrogen concentration in the anoxic pool;

[0032] The data processing model submodule is used to obtain feedforward sewage return ratio data according to the total nitrogen concentration of the influent, and to obtain feedback sewage return ratio data according to the total nitrogen concentration of the effluent in the anoxic tank;

[0033] The control decision submodule is used to obtain the feedforward operating parameters of the sewage return pump according to the feedforward sewage return ratio data, and determine the feedforward adjustment instruction according to the feedforward operating parameters of the sewage return pump; and to obtain the feedback operating parameters of the sewage return pump according to the feedback sewage return ratio data, and determine the feedback adjustment instruction according to the feedback operating parameters of the sewage return pump.

[0034] In one or some optional embodiments, the sewage treatment device further comprises a sludge return pump and a sludge discharge pump; the inlet of the sludge return pump is connected to the bottom sludge discharge port of the sedimentation device, and the outlet of the sludge return pump is connected to the aerobic tank of the aerobic biological reaction device; the inlet of the sludge discharge pump is connected to the bottom sludge discharge port;

[0035] The data monitoring device includes an aerobic tank sludge concentration monitoring device, a return sludge concentration monitoring device and a sludge flow monitoring device; the aerobic tank sludge concentration monitoring device is used to monitor the sludge concentration of the aerobic tank; the return sludge concentration monitoring device is used to monitor the return sludge concentration of the sludge return pump; the sludge flow monitoring device is used to monitor the amount of sludge discharged from the sedimentation device;

[0036] The data processing model submodule is used to calculate the sludge age data according to the sludge concentration of the aerobic tank, the tank capacity of the aerobic tank, the amount of sludge discharged from the sedimentation device and the return sludge concentration of the sludge return pump;

[0037] The control decision submodule is used to obtain the operating parameters of the sludge efflux pump according to the sludge age data, and determine the sludge efflux pump adjustment instructions according to the operating parameters of the sludge efflux pump.

[0038] In one or some optional embodiments, the control decision submodule is further used to obtain the operating parameters of the sludge return pump according to the sludge concentration in the aerobic tank, and determine the sludge return pump adjustment instructions according to the operating parameters of the sludge return pump.

[0039] In one or some optional embodiments, the sewage homogenization device includes an inlet emergency drain valve, which is connected to the emergency buffer device, and is characterized in that the control decision submodule is also used to determine whether at least one of the inlet total nitrogen concentration, inlet COD concentration and inlet ammonia nitrogen concentration of the sewage homogenization device is greater than a preset threshold value of the inlet water quality. If so, an opening instruction is sent to the inlet emergency drain valve.

[0040] In one or some optional embodiments, the data monitoring device further includes a homogenizing tank inlet flow monitoring device and a homogenizing tank liquid level monitoring device; the homogenizing tank inlet flow monitoring device is used to monitor the inlet flow data; the homogenizing tank liquid level monitoring device is used to monitor the inlet liquid level data;

[0041] The control decision submodule is also used to determine whether the water inlet flow data is greater than a preset water inlet flow threshold, or whether the water inlet liquid level data is greater than a preset water inlet liquid level threshold. If so, an opening instruction is sent to the water inlet emergency drain valve.

[0042] In one or some optional embodiments, the monitoring and discharge device includes a water outlet accident drain valve; the water outlet accident drain valve is connected to the accident buffer device;

[0043] The data monitoring device also includes an outlet water total nitrogen concentration monitoring device, an outlet water COD concentration monitoring device and an outlet water ammonia nitrogen concentration monitoring device;

[0044] The effluent total nitrogen concentration monitoring device is used to monitor the effluent total nitrogen concentration of the monitoring discharge device;

[0045] The effluent COD concentration monitoring device is used to monitor the effluent COD concentration of the monitoring discharge device;

[0046] The effluent ammonia nitrogen concentration monitoring device is used to monitor the effluent ammonia nitrogen concentration of the monitoring discharge device;

[0047] The control decision submodule is also used to determine whether at least one of the effluent total nitrogen concentration, effluent COD concentration and effluent ammonia nitrogen concentration of the monitored discharge device is greater than a preset threshold value of the effluent water quality. If so, an opening instruction is sent to the effluent accident drain valve.

[0048] In one or some optional embodiments, the data monitoring device further includes a discharge pool effluent flow monitoring device and a discharge pool liquid level monitoring device; the discharge pool effluent flow monitoring device is used to monitor the effluent flow data of the monitoring discharge device; the discharge pool liquid level monitoring device is used to monitor the effluent liquid level data of the monitoring discharge device;

[0049] The control decision submodule is also used to determine whether the water outlet flow data is greater than a preset water outlet flow threshold, or whether the water outlet liquid level data is greater than a preset water outlet liquid level threshold. If so, an opening instruction is sent to the water outlet emergency drain valve.

[0050] In one or some optional embodiments, the analysis and calculation module further includes: an early warning module;

[0051] The control decision submodule is also used to send a warning alarm instruction to the warning module.

[0052] As another aspect of an embodiment of the present invention, a control method of a control system for refinery wastewater treatment is provided, comprising:

[0053] Collecting water inlet characteristic parameter data of a sewage homogenizer and water quality status parameter data in a sewage treatment plant; the water inlet characteristic parameter data includes at least one of the following data: water quality data of inlet water, water flow data of inlet water and water level data of inlet water; the water quality status parameter data in the pool includes at least one of the following data: COD concentration data, pH value data, dissolved oxygen concentration data, sludge volume data, ammonia nitrogen concentration data and total nitrogen concentration data;

[0054] Determine a feedforward adjustment instruction for controlling the sewage treatment device according to the water inlet characteristic parameter data and / or the water quality state parameter data in the pool, and,

[0055] Determining feedback adjustment instructions for controlling the sewage treatment device according to the water quality status parameter data in the pool;

[0056] The feedforward adjustment instruction and / or the feedback adjustment instruction is sent to the corresponding controlled equipment of the sewage treatment device to control the controlled equipment to adjust the working state.

[0057] As a third aspect of an embodiment of the present invention, it relates to a refinery wastewater treatment system, including: the above-mentioned refinery wastewater treatment control system.

[0058] The beneficial technical effects of the present invention are:

[0059] The control system for the treatment of refining and chemical wastewater disclosed in the present invention collects the water inlet characteristic parameter data of the sewage homogenization device and the water quality state parameter data in the pool of the sewage treatment device through the data monitoring device 2, and then determines the feedforward adjustment instruction and feedback adjustment instruction for controlling the sewage treatment device through the central control device 1, forming a feedforward plus feedback control mechanism to realize the adjustment working state of the controlled equipment of the sewage treatment device. The automatic control of the controlled equipment is realized through feedforward adjustment, and the operating parameters of the controlled equipment are corrected through feedback adjustment, which has a higher degree of intelligence and more accurate control and adjustment, reduces the energy loss and reagent loss in the sewage treatment process, improves the operating efficiency of the sewage treatment system, and saves production costs.

[0060] In the control system for the treatment of refining and chemical wastewater disclosed in the present invention, the data processing model submodule of the central control device 1 analyzes the real-time water quality data through a preset activated sludge model (ASM), forms a sewage treatment control decision plan, obtains the parameter data of the reagent to be adjusted, and then obtains the operating parameters of the controlled equipment of the sewage treatment device through the control decision submodule, and automatically controls the controlled equipment through the feedforward instruction. Compared with the control method that directly adopts the feedback mechanism, the present invention can use the activated sludge model to analyze and calculate the water quality, flow rate, liquid level and other data of the sewage inlet, obtain the feedforward signal of the operating parameters of the controlled equipment of the sewage treatment device, and timely adjust the operating parameters of the controlled equipment by coordinating the feedforward signal with the feedback signal, effectively prevent the impact of the sewage inlet change on the sewage treatment system, and improve the sewage treatment effect of the sewage treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is a structural schematic diagram of a refinery wastewater treatment system provided by an embodiment of the present invention;

[0062] Figure 2 It is a flow chart of a control method of a control system for refinery wastewater treatment provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0063] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0064] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0065] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0066] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] The inventor found that in the prior art, petroleum refining enterprises generally use manual methods to adjust the controlled equipment of each sewage treatment device, resulting in low operating efficiency of the sewage treatment system of the refinery sewage. Due to the influence of human factors, the quality of sewage treatment is seriously dependent on the ability and proficiency of the equipment operator. In addition, due to the lag of manual operation, the sewage treatment system of petroleum refining enterprises generally has problems such as low operating efficiency, high energy consumption and drug consumption, and tight human resources, and even leads to the serious consequence that the effluent water quality after being treated by the sewage treatment system exceeds the standard. In order to at least partially solve the technical problems existing in the prior art, the inventor has made the present invention, and provides a sewage treatment control system, a control method for a sewage treatment control system, and a sewage treatment system through specific implementation methods.

[0068] Example 1

[0069] Reference Figure 1As shown, an embodiment of the present invention provides a control system for refinery wastewater treatment, which is applied to a wastewater treatment system, wherein the wastewater treatment system includes a wastewater homogenization device 3 and at least one of the following wastewater treatment devices: an anaerobic biological reaction device 4, an anoxic biological reaction device 5, an aerobic biological reaction device 6, a sedimentation device 7, a monitoring and discharge device 8, and an accident buffer device 9, and the control system includes a central control device 1 and a data monitoring device 2;

[0070] The data monitoring device 2 is used to collect water inlet characteristic parameter data of the sewage homogenizer and water quality status parameter data in the pool of the sewage treatment device, and send the data to the central control device 1;

[0071] The water inlet characteristic parameter data includes at least one of the following data: water inlet quality data, water inlet flow data and water inlet level data;

[0072] The water quality state parameter data in the pool includes at least one of the following data: COD concentration data, pH value data, dissolved oxygen concentration data and sludge volume data, ammonia nitrogen concentration data and total nitrogen concentration data;

[0073] The central control device 1 is used to determine the feedforward adjustment instructions for controlling the sewage treatment device based on the water inlet characteristic parameter data and / or the water quality status parameter data in the pool, and to determine the feedback adjustment instructions for controlling the sewage treatment device based on the water quality status parameter data in the pool, and send the feedforward adjustment instructions and / or feedback adjustment instructions to the corresponding controlled equipment of the sewage treatment device to control the controlled equipment to adjust the working state.

[0074] The control system for the treatment of refining and chemical wastewater disclosed in the present invention collects the water inlet characteristic parameter data of the sewage homogenization device and the water quality state parameter data in the pool of the sewage treatment device through the data monitoring device 2, and then determines the feedforward adjustment instruction and feedback adjustment instruction for controlling the sewage treatment device through the central control device 1, forming a feedforward plus feedback control mechanism to realize the adjustment working state of the controlled equipment of the sewage treatment device. The automatic control of the controlled equipment is realized through feedforward adjustment, and the operating parameters of the controlled equipment are corrected through feedback adjustment, which has a higher degree of intelligence and more accurate control and adjustment, reduces the energy loss and reagent loss in the sewage treatment process, improves the operating efficiency of the sewage treatment system, and saves production costs.

[0075] In one embodiment, referring to Figure 1 As shown, the central control device 1 includes a communication module 102 and an analysis and calculation module 101;

[0076] The communication module 102 is used to send the received water inlet characteristic parameter data and / or the water quality status parameter data in the pool to the analysis and calculation module 101; and send the received feedforward adjustment instructions and feedback adjustment instructions to the controlled device;

[0077] The analysis and calculation module 101 is used to determine the feedforward adjustment instruction according to the water inlet characteristic parameter data and / or the water quality status parameter data in the pool, and to determine the feedback adjustment instruction according to the water quality status parameter data in the pool, and send the feedforward adjustment instruction and / or the feedback adjustment instruction to the communication module 102.

[0078] In a specific embodiment, the analysis and calculation module 101 includes a data processing model submodule 1011 and a control decision submodule 1012;

[0079] The data processing model submodule 1011 is used to obtain the feedforward amount to be adjusted in the sewage treatment device according to the influent characteristic parameter data and / or the water quality state parameter data in the pool in the preset activated sludge model, and send it to the control decision submodule 1012, and, in the activated sludge model, obtain the feedback amount to be adjusted in the sewage treatment device according to the water quality state parameter data in the pool;

[0080] The control decision submodule 1012 is used to obtain the operating parameters of the corresponding controlled equipment of the sewage treatment device according to the feedforward amount to be adjusted, and determine the feedforward adjustment instruction according to the operating parameters of the controlled equipment; and to obtain the operating parameters to be adjusted of the controlled equipment according to the feedback amount to be adjusted and the current operating parameters of the controlled equipment, and determine the feedback adjustment instruction according to the operating parameters to be adjusted of the controlled equipment.

[0081] In the control system for the treatment of refining wastewater disclosed in the present invention, the data processing model submodule 1011 of the central control device 1 analyzes the real-time water quality data through a preset activated sludge model (ASM), forms a sewage treatment control decision plan, obtains the parameter data of the reagent to be adjusted, and then obtains the operating parameters of the controlled equipment of the sewage treatment device through the control decision submodule 1012, and automatically controls the controlled equipment through the feedforward instruction. Compared with the control method that directly adopts the feedback mechanism, the present invention can use the activated sludge model to analyze and calculate the water quality, flow rate, liquid level and other data of the sewage inlet, obtain the feedforward signal of the operating parameters of the controlled equipment of the sewage treatment device, and timely adjust the operating parameters of the controlled equipment by coordinating the feedforward signal with the feedback signal, effectively prevent the impact of the sewage inlet change on the sewage treatment system, and improve the sewage treatment effect of the sewage treatment device.

[0082] The inventors of the present invention have discovered that the control method of the sewage treatment system that directly adopts the feedback mechanism, since it is after the refinery sewage treatment has begun, the feedback adjustment of the controlled equipment of the sewage treatment device is performed based on the data in the sewage treatment device collected by the data monitoring device. Therefore, the feedback adjustment instruction has a certain lag and cannot fully adapt to the changes in sewage water quality. For example: assuming that the chemical oxygen demand COD in the influent of the refinery sewage suddenly increases from 200 mg / L to 1000 mg / L, the use of only the feedback mechanism may result in the aeration device of the aerobic biological reaction device 6 adjusting the operating state under the signal control of the feedback adjustment instruction to increase the aeration volume of the aerobic tank when the dissolved oxygen in the aerobic tank of the aerobic biological reaction device 6 is reduced to no longer meet the preset requirements. At this time, the sewage treatment efficiency of the aerobic biological reaction device 6 will be reduced.

[0083] Therefore, the inventor of the present invention proposes that, by calculating and predicting the dosage parameters of the sewage treatment device in the preset activated sludge model according to the inlet characteristic parameter data of the sewage to be treated in the data processing model submodule 1011, when the water quality of the sewage changes, the controlled equipment of the sewage treatment device can be timely controlled through the feedforward adjustment instruction, so that the sewage treatment device can adjust the operating state in advance to adapt to the change of sewage water quality. For example, when the chemical oxygen demand COD in the inlet water of the above-mentioned refinery sewage suddenly increases from 200 mg / L to 1000 mg / L, by calculating the dosage parameters of the sewage treatment device in the preset activated sludge model according to the inlet characteristic parameter data of the sewage to be treated in the data processing model submodule 1011, when the water quality of the sewage changes, the controlled equipment of the sewage treatment device can be timely controlled through the feedforward adjustment instruction, so that the sewage treatment device can adjust the operating state in advance to adapt to the change of sewage water quality. The inlet characteristic parameter data of the treated sewage is used to predict the dissolved oxygen data of the aerobic pool. Before the sewage with a chemical oxygen demand (COD) of 1000 mg / L enters the aerobic pool, a feedforward adjustment instruction is issued to control the aeration equipment to adjust the operating state and increase the aeration volume, so that the dissolved oxygen concentration in the aerobic pool is increased in advance to a preset concentration range suitable for the treatment of sewage with a chemical oxygen demand (COD) of 1000 mg / L. In addition, during the sewage treatment process, the water quality status parameter data in the pool can be collected in real time, so as to issue a feedback adjustment instruction, use feedback control to adjust the operating state of the aeration equipment, and correct the aeration volume of the aeration equipment, so that the dissolved oxygen concentration in the aerobic pool is maintained within the preset concentration range.

[0084] In the embodiment of the present invention, the feedforward and feedback adjustment mechanism adopted can refer to the specific implementation method of feedforward and feedback in the prior art, and the decision-making method when the feedforward adjustment instruction and the feedback adjustment instruction conflict can be realized by setting the adjustment method of feedforward and feedback. For example, when the feedforward adjustment instruction and the feedback adjustment instruction conflict, the feedback adjustment instruction is given to the controlled device of the sewage treatment device as the final instruction signal. For example, when the operating parameters of the aeration equipment of the aerobic biological reactor are controlled by instructions, if the aeration amount of the aeration equipment needs to be reduced according to the feedforward adjustment instruction, and the aeration amount of the aeration equipment needs to be increased according to the feedback adjustment instruction, then at this time, the feedback adjustment instruction will be sent to the aeration equipment through a preset decision-making method to increase the aeration amount of the aeration equipment.

[0085] In the embodiment of the present invention, the function of the anaerobic biological reaction device 4 is to improve the biodegradability of sewage through hydrolysis and acidification, while the function of the anoxic biological reaction device 5 is to denitrify the nitrate nitrogen in the sewage into nitrogen gas, and the function of the aerobic biological reaction device 6 is to oxidize the ammonia nitrogen in the sewage into nitrate nitrogen and remove COD.

[0086] In a specific embodiment, the sewage treatment system may include an anaerobic biological reaction device 4, an anoxic biological reaction device 5 and an aerobic biological reaction device 6. Figure 1 As shown, the sewage treatment device of the sewage treatment system includes an accident buffer device 9, a sewage homogenizer 3, an anaerobic biological reaction device 4, an anoxic biological reaction device 5, an aerobic biological reaction device 6, a sedimentation device 7 and a monitoring discharge device 8. Among them, the sewage homogenizer 3, the anaerobic biological reaction device 4, the anoxic biological reaction device 5, the aerobic biological reaction device 6, the sedimentation device 7 and the monitoring discharge device 8 are connected in sequence, and the accident buffer device 9 is connected to the sewage homogenizer 3 and the monitoring discharge device 8 respectively.

[0087] Below is the photo Figure 1 Taking the sewage treatment system shown in FIG. 1 as an example, the control system for the treatment of refinery sewage provided by the embodiment of the present invention is described in detail:

[0088] Reference Figure 1As shown, in the embodiment of the present invention, the anoxic biological reaction device 5 of the sewage treatment system includes an anoxic tank (not shown in the figure) and a carbon source adding device (not shown in the figure); the aerobic biological reaction device 6 of the sewage treatment system includes an aerobic tank (not shown in the figure), an alkali solution adding device (not shown in the figure) and an aeration device (not shown in the figure); the water inlet of the sewage return pump 10 of the sewage treatment system is connected to the water outlet of the aerobic tank, and the water outlet of the sewage return pump 10 is connected to the anoxic tank of the anoxic biological reaction device 5; the inlet of the sludge return pump 11 of the sewage treatment system is connected to the water outlet of the aerobic tank. The outlet of the sludge return pump 11 is connected to the aerobic tank of the aerobic biological reaction device 6; the inlet of the sludge external discharge pump of the sewage treatment system is connected to the bottom sludge outlet of the sedimentation device 7 of the sewage treatment system; the sewage homogenization device 3 of the sewage treatment system includes an inlet accident drain valve (not shown in the figure), and the inlet accident drain valve is connected to the accident buffer device 9; the monitoring and discharge device 8 of the sewage treatment system includes an outlet accident drain valve (not shown in the figure), and the outlet accident drain valve is also connected to the accident buffer device 9.

[0089] When the sewage treatment system is put into operation, the water inlet characteristic parameter data of the sewage homogenizer 3, including the water quality data, the flow rate data and the level data, are collected through the data monitoring device 2. The central control device 1 of the control system initializes the preset activated sludge model of the data processing model submodule 1011 according to the water inlet characteristic parameter data of the sewage homogenizer 3 to obtain the model parameters of the preset activated sludge model.

[0090] In the embodiment of the present invention, the preset activated sludge model can be a model obtained according to the IWA (International Water Association, IWA) activated sludge model No. 1 ASM1 (Activated Sludge Model No. 1), activated sludge model No. 2 ASM2 or activated sludge model No. 3 ASM3 in the prior art, wherein the model parameters of the preset activated sludge model may include soluble difficult biodegradable organic matter Fus, granular difficult biodegradable organic matter Fup, rapidly biodegradable organic matter Fbs, non-colloidal slow biodegradable organic matter Fxps and granular difficult biodegradable COD N content FupN, etc. In the embodiment of the present invention, the parameters of the model can be set according to the inlet characteristic parameter data of the sewage homogenization device 3 collected by the data monitoring device 2 to obtain the parameter values ​​of the model parameters. In the embodiment of the present invention, the specific implementation process of determining the parameter values ​​of the model parameters of the activated sludge model can refer to the detailed description of the activated sludge model in the prior art, and will not be repeated here.

[0091] In an embodiment of the present invention, after the feedforward amount to be adjusted of each sewage treatment device is predicted according to the preset activated sludge model, if during operation, the operator finds that the feedforward amount to be adjusted deviates from the actual reagent dosage of the sewage treatment device, the reagent dosage can be corrected according to the actual reagent dosage. Of course, if during operation, if the feedforward amount to be adjusted of each sewage treatment device predicted by the preset activated sludge model always deviates from the actual reagent dosage requirement, the model correction personnel can correct the parameters of the preset activated sludge model according to actual needs, so that the reagent dosage of the sewage treatment device predicted by the preset activated sludge model is more in line with the actual sewage treatment needs.

[0092] In an embodiment of the present invention, in the preset activated sludge model, based on the collected water inlet characteristic parameter data, the dosage data of the reagents that need to be added to each sewage treatment device in the sewage treatment system can be calculated. For example, when the sewage treatment system is put into operation, the water inlet characteristic parameter data in the sewage homogenizer 3 can be first collected. When the data processing model submodule 1011 receives the water inlet characteristic parameter data, the carbon source dosage parameter data in the anoxic biological reaction device 5 can be calculated in the preset activated sludge model. Then, the control decision submodule 1012 can calculate the operating parameters of the carbon source dosing equipment of the anoxic biological reaction device 5 based on the calculated carbon source dosage parameter data, including a prepared carbon source mother liquor of a certain concentration, a carbon source dosing pump flowmeter, a carbon source dosing pipeline diameter, etc., and send corresponding feedforward adjustment instructions to the carbon source dosing equipment based on the obtained operating parameters of the carbon source dosing equipment.

[0093] Similarly, when the data processing model submodule 1011 receives the influent characteristic parameter data, the alkali solution dosage parameter data and the dissolved oxygen concentration data in the aerobic biological reaction device 6 can be calculated in the preset activated sludge model. Then, the control decision submodule 1012 can calculate the operating parameters of the alkali solution dosing equipment of the aerobic biological reaction device 6 according to the calculated alkali solution dosage parameter data, including the prepared alkali solution of a certain concentration, the flow rate of the alkali solution dosing pump, the diameter of the alkali solution dosing pipeline, etc., and calculate the operating parameters of the aeration equipment of the aerobic biological reaction device 6 according to the calculated dissolved oxygen concentration data, including the operating power of the aeration fan, oxygen dissolution efficiency parameters, etc., and send corresponding feedforward adjustment instructions to the alkali solution dosing equipment and the aeration equipment according to the obtained operating parameters of the alkali solution dosing equipment and the operating parameters of the aeration equipment.

[0094] In the embodiment of the present invention, the data monitoring device 2 used to collect the inlet characteristic parameter data can adopt the collection device in the prior art. For example, the inlet COD, pH, dissolved oxygen, ammonia nitrogen, and total nitrogen water quality data can be collected through the inlet water quality monitoring device, the inlet flow data can be collected through the water flow sensor, and the inlet water level data can be collected through the liquid level sensor. Since the types of data to be collected in the embodiment of the present invention are different, the number of sewage treatment devices in the sewage treatment system is multiple, when collecting the inlet characteristic parameter data, multiple different data monitoring devices 2 can be used to collect different inlet characteristic parameter data of different sewage treatment devices.

[0095] In an embodiment of the present invention, the above-mentioned feedforward amount to be adjusted may include: feedforward carbon source dosage parameter data in the anoxic tank, feedforward alkali dosage parameter data in the aerobic tank, feedforward aeration parameter data in the aerobic tank, and feedforward sewage return ratio data; the above-mentioned feedback amount to be adjusted may include: feedback carbon source dosage parameter data in the anoxic tank, feedback alkali dosage parameter data in the aerobic tank, feedback aeration parameter data in the aerobic tank, and feedback sewage return ratio data. Of course, based on the sewage treatment system, the feedforward amount to be adjusted may also include feedforward dosage parameter data of other agents, and similarly, the feedback amount to be adjusted may also include feedback dosage parameter data of other agents.

[0096] In a specific embodiment, the influent water quality data includes influent total nitrogen concentration, influent COD concentration and influent ammonia nitrogen concentration;

[0097] The data monitoring device includes an inlet total nitrogen concentration monitoring device, an inlet COD concentration monitoring device and an inlet ammonia nitrogen concentration monitoring device;

[0098] Influent total nitrogen concentration monitoring device, used to monitor the influent total nitrogen concentration of the sewage homogenization device;

[0099] Influent COD concentration monitoring device, used to monitor the influent COD concentration of the sewage homogenization device;

[0100] The inlet ammonia nitrogen concentration monitoring device is used to monitor the inlet ammonia nitrogen concentration of the sewage homogenization device.

[0101] Of course, when collecting the water quality status parameter data in the pools of different sewage treatment devices, different data monitoring devices 2 can also be used respectively. For example, a total nitrogen concentration monitoring device can be used to collect the total nitrogen concentration parameter data of the anoxic pool, and a COD concentration monitoring device can be used to collect the COD concentration parameter data of the anoxic biological reaction device 5. When collecting the ammonia nitrogen concentration parameter data of the aerobic biological reaction device 6, an ammonia nitrogen concentration monitoring device can be used, when collecting the dissolved oxygen data of the aerobic biological reaction device 6, a dissolved oxygen monitoring device can be used, and when collecting the pH value data of the aerobic biological reaction device 6, a pH monitoring device can be used. Similarly, the above-mentioned COD concentration monitoring device and pH monitoring device can also adopt the monitoring devices in the prior art, as long as the corresponding monitoring function can be realized and the COD concentration or pH value data can be obtained. In the embodiments of the present invention, no specific limitation is made to this.

[0102] In the embodiment of the present invention, the sewage treatment device of the sewage treatment system adjusts the operating parameters of the controlled device according to the obtained feedforward adjustment instruction. During the operation of the controlled device, the water quality status parameter data in the pool of the sewage treatment device can be monitored by the data monitoring device 2. When the data processing model submodule 1011 receives the water inlet characteristic parameter data, in the activated sludge model, the feedback amount to be adjusted in the sewage treatment device can be obtained according to the water quality status parameter data in the pool; then the control decision submodule 1012 obtains the operating parameters to be adjusted of the controlled device according to the feedback amount to be adjusted and the current operating parameters of the controlled device, and determines the feedback adjustment instruction according to the operating parameters to be adjusted of the controlled device.

[0103] In a specific embodiment, the anoxic bioreactor 5 includes an anoxic tank (not shown in the figure) and a carbon source adding device (not shown in the figure);

[0104] The data processing model submodule 1011 is specifically used to obtain the feedforward carbon source dosage parameter data in the anoxic tank according to the influent total nitrogen concentration and the influent COD concentration in the activated sludge model;

[0105] The control decision submodule 1012 is specifically used to obtain the feedforward operation parameters of the carbon source dosing device according to the feedforward carbon source dosage parameter data, and determine the feedforward adjustment instruction according to the feedforward operation parameters.

[0106] In a specific embodiment, the data monitoring device 2 includes an anoxic pool total nitrogen concentration monitoring device and an anoxic pool COD concentration monitoring device (not shown in the figure), and the anoxic pool total nitrogen concentration monitoring device is used to monitor the total nitrogen concentration in the anoxic pool;

[0107] The COD concentration monitoring device is used to monitor the COD concentration in the anoxic tank of the anoxic biological reaction device 5;

[0108] The data processing model submodule 1011 is also used to obtain the parameter data of the carbon source dosage in the anoxic tank according to the total nitrogen concentration in the anoxic tank and the COD concentration in the anoxic tank in the activated sludge model;

[0109] The control decision submodule 1012 is further used to obtain the feedback operating parameters of the carbon source adding device according to the feedback carbon source addition amount parameter data and the current operating parameters of the carbon source adding device, and determine the feedback adjustment instruction according to the feedback operating parameters.

[0110] In the embodiment of the present invention, the total nitrogen concentration in the anoxic tank of the anoxic bioreactor 5 is obtained by the anoxic tank total nitrogen concentration monitoring device, and the COD concentration in the anoxic tank of the anoxic bioreactor 5 is obtained by the anoxic tank COD concentration monitoring device. The feedback carbon source dosage parameter data to be added in the anoxic tank can be calculated based on the COD concentration in the anoxic tank and the total nitrogen concentration in the anoxic tank. The specific process of calculating the feedback carbon source dosage parameter data to be added in the anoxic tank can refer to the detailed description of the implementation method in the relevant prior art. In the embodiment of the present invention, no specific limitation is made to this.

[0111] In a specific embodiment, the aerobic biological reaction device 6 includes an aerobic tank, an alkali solution dosing device and an aeration device;

[0112] The data processing model submodule 1011 is specifically used to obtain the feedforward alkali dosage parameter data in the aerobic tank according to the influent ammonia nitrogen concentration in the preset activated sludge model, and to obtain the feedforward aeration parameter data in the aerobic tank according to the influent COD concentration;

[0113] The control decision submodule 1012 is specifically used to obtain the feedforward operating parameters of the alkali solution dosing equipment according to the feedforward alkali dosage parameter data, and to obtain the feedforward operating parameters of the aeration equipment according to the feedforward aeration volume parameter data, and to determine the feedforward adjustment instructions according to the feedforward operating parameters of the alkali solution dosing equipment and the feedforward operating parameters of the aeration equipment.

[0114] In a specific embodiment, the data monitoring device 2 further includes a pH monitoring device (not shown in the figure) and a dissolved oxygen monitoring device (not shown in the figure);

[0115] The pH monitoring device is used to monitor the pH value data in the aerobic pool;

[0116] The dissolved oxygen monitoring device is used to monitor the dissolved oxygen data in the aerobic tank;

[0117] The data processing model submodule 1011 is also used to obtain the feedback alkali dosage parameter data in the aerobic tank according to the pH value data in the preset activated sludge model, and to obtain the feedback aeration parameter data in the aerobic tank according to the dissolved oxygen data;

[0118] The control decision submodule 1012 is also used to obtain feedback operating parameters of the alkali solution dosing equipment based on the feedback alkali dosage parameter data and the current operating parameters of the alkali solution dosing equipment, and to obtain feedback operating parameters of the aeration equipment based on the feedback aeration volume parameter data and the current operating parameters of the aeration equipment, and to determine feedback adjustment instructions based on the feedback operating parameters of the alkali solution dosing equipment and the feedback operating parameters of the aeration equipment.

[0119] In the embodiment of the present invention, after the sewage treatment system is put into operation, the refinery sewage passing through the sewage homogenizer 3 enters the anaerobic biological reaction device 4, the anoxic biological reaction device 5 and the aerobic biological reaction device 6 for biological treatment in sequence. The central control device 1 performs real-time analysis of the water quality state parameter data in the reaction tanks of the above-mentioned sewage treatment devices (including the anaerobic tank of the anaerobic biological reaction device 4, the anoxic tank of the anoxic biological reaction device 5 and the aerobic tank of the aerobic biological reaction device 6) through the data processing model submodule 1011. When the anoxic tank lacks a carbon source, the control decision submodule 1012 obtains the feedback operating parameters of the carbon source addition device based on the feedback carbon source addition amount parameter data and the current operating parameters of the carbon source addition device, thereby issuing a feedback adjustment instruction, automatically starting and adjusting the operating state of the carbon source addition device, and adding the required carbon source to the anoxic tank. When the pH value of the aerobic pool decreases, the control decision submodule 1012 obtains the feedback operation parameters of the alkali solution adding device according to the feedback alkali dosage parameter data and the current operation parameters of the alkali solution adding device, thereby issuing a feedback adjustment instruction to automatically adjust the operation state of the alkali solution adding device, thereby adding the required alkali solution to the aerobic pool. When the dissolved oxygen concentration of the aerobic pool is low or high, the control decision submodule 1012 obtains the feedback operation parameters of the aeration device according to the feedback aeration volume parameter data and the current operation parameters of the aeration device, thereby issuing a feedback adjustment instruction to automatically increase or decrease the operation power of the aeration device, and adjust the dissolved oxygen in the aerobic pool to a preset dissolved oxygen concentration range.

[0120] In one embodiment, the sewage treatment device of the sewage treatment system further includes a sewage return pump 10; wherein the inlet of the sewage return pump 10 is connected to the outlet of the aerobic tank, and the outlet of the sewage return pump 10 is connected to the anoxic tank of the anoxic biological reaction device 5;

[0121] The data monitoring device 2 also includes an anoxic pool effluent total nitrogen monitoring device (not shown in the figure), which is used to monitor the total nitrogen concentration of the effluent water in the anoxic pool;

[0122] The data processing model submodule 1011 is used to obtain feedforward sewage return ratio data according to the total nitrogen concentration of the influent, and to obtain feedback sewage return ratio data according to the total nitrogen concentration of the effluent in the anoxic tank;

[0123] The control decision submodule 1012 is used to obtain the feedforward operating parameters of the sewage return pump based on the feedforward sewage return ratio data, and determine the feedforward adjustment instructions based on the feedforward operating parameters of the sewage return pump; and to obtain the feedback operating parameters of the sewage return pump based on the feedback sewage return ratio data, and determine the feedback adjustment instructions based on the feedback operating parameters of the sewage return pump.

[0124] In the embodiment of the present invention, during the treatment of refinery wastewater, after the refinery wastewater is treated by the aerobic biological reactor 6, the central control device 1 obtains feedback wastewater return ratio data according to the total nitrogen concentration of the effluent in the anoxic tank collected by the data monitoring device 2. When the feedback wastewater return ratio is too low or too high, the control decision submodule 1012 obtains the feedback operating parameters of the wastewater return pump 10 according to the feedback wastewater return ratio data, thereby issuing a feedback adjustment instruction, automatically increasing or decreasing the operating power of the wastewater return pump 10, and adjusting the wastewater return ratio of the aerobic tank to a preset wastewater return ratio range.

[0125] In an embodiment of the present invention, the above-mentioned feedforward amount to be adjusted may include: feedforward carbon source dosage parameter data in the anoxic tank, feedforward alkali dosage parameter data in the aerobic tank, feedforward aeration parameter data in the aerobic tank, and feedforward sewage return ratio data; the above-mentioned feedback amount to be adjusted may include: feedback carbon source dosage parameter data in the anoxic tank, feedback alkali dosage parameter data in the aerobic tank, feedback aeration parameter data in the aerobic tank, and feedback sewage return ratio data. Of course, based on the sewage treatment system, the feedforward amount to be adjusted may also include feedforward dosage parameter data of other agents, and similarly, the feedback amount to be adjusted may also include feedback dosage parameter data of other agents.

[0126] In the embodiment of the present invention, the anoxic pool total nitrogen concentration monitoring device for detecting the total nitrogen concentration in the anoxic pool and the anoxic pool effluent total nitrogen monitoring device for monitoring the total nitrogen concentration in the effluent from the anoxic pool can be the same nitrogen concentration detection device, and of course, can also be two different nitrogen concentration detection devices set separately.

[0127] In one embodiment, the sewage treatment device of the sewage treatment system further includes a sludge return pump 11 and a sludge discharge pump 12;

[0128] The inlet of the sludge return pump 11 is connected to the bottom sludge outlet of the sedimentation device 7, and the outlet of the sludge return pump 11 is connected to the aerobic tank of the aerobic biological reaction device;

[0129] The inlet of the sludge discharge pump 12 is connected to the bottom sludge discharge port of the sedimentation device 7;

[0130] The data monitoring device 2 includes an aerobic tank sludge concentration monitoring device (not shown in the figure), a return sludge concentration monitoring device (not shown in the figure) and a sludge flow monitoring device (not shown in the figure);

[0131] The aerobic tank sludge concentration monitoring device (not shown in the figure) is used to monitor the sludge concentration of the aerobic tank;

[0132] A return sludge concentration monitoring device (not shown in the figure) is used to monitor the return sludge concentration of the sludge return pump 11;

[0133] A sludge flow monitoring device, used to monitor the amount of sludge discharged from the sedimentation device 7;

[0134] The data processing model submodule 1011 is used to calculate the sludge age data according to the sludge concentration of the aerobic tank, the tank capacity of the aerobic tank, the amount of sludge discharged from the sedimentation device 7 and the return sludge concentration of the sludge return pump 11;

[0135] The control decision submodule 1012 is used to obtain the operating parameters of the sludge efflux pump 12 according to the sludge age data, and determine the sludge efflux pump adjustment instructions according to the operating parameters of the sludge efflux pump 12.

[0136] In a specific embodiment, the control decision submodule 1012 is further used to obtain the operating parameters of the sludge return pump 11 according to the sludge concentration in the aerobic tank, and determine the sludge return pump adjustment instructions according to the operating parameters of the sludge return pump 11.

[0137] In the embodiment of the present invention, the calculation process of the data processing model submodule 1011 for calculating the sludge age data can refer to the detailed description in the prior art. In the embodiment of the present invention, there is no specific limitation on the method for calculating the sludge age data, as long as the sludge age data can be obtained.

[0138] In the embodiment of the present invention, during the treatment of refinery wastewater, when the refinery wastewater passes through the aerobic biological reaction device 6, the central control device 1 calculates the sludge age according to the sludge concentration of the aerobic tank, the amount of sludge discharged from the sedimentation device 7, the pool capacity of the aerobic tank, and the return sludge concentration of the sludge return pump 11 collected by the data monitoring device 2. According to the sludge age, the operating parameters of the sludge discharge pump 12 are obtained, and thus an adjustment instruction is issued to automatically increase or decrease the operating power of the sludge discharge pump 12, so as to realize the size control of the amount of sludge discharged from the sedimentation device 7, and adjust the sludge amount of the sedimentation device to a preset sludge amount range. Moreover, according to the return sludge concentration, the operating parameters of the sludge return pump 11 can be obtained, and the adjustment instruction can be determined according to the operating parameters of the sludge return pump 11, so as to automatically increase or decrease the operating power of the sludge return pump 11 and adjust the sludge amount of the aerobic tank to a reasonable sludge amount range.

[0139] In the embodiment of the present invention, refer to Figure 1 As shown, the sedimentation device 7 of the sludge treatment system also includes a sludge discharge valve (not shown in the figure), and the control decision submodule 1012 is also used to compare the sludge age data with the preset sludge age threshold to obtain the opening parameter to be adjusted of the sludge discharge valve, and determine the feedback adjustment instruction according to the opening parameter to be adjusted of the sludge discharge valve.

[0140] In one embodiment, the sewage homogenization device 3 of the sewage treatment system includes an inlet accident drain valve (not shown in the figure), which is connected to the accident buffer device. The control decision submodule 1012 is also used to determine whether at least one of the inlet total nitrogen concentration, inlet COD concentration and inlet ammonia nitrogen concentration of the sewage homogenization device is greater than the preset threshold value of the inlet water quality. If so, an opening instruction is sent to the inlet accident drain valve.

[0141] In a specific embodiment, the analysis and calculation module 101 of the central control device 1 further includes: an early warning module (not shown in the figure);

[0142] The control decision submodule 1012 is also used to send a warning alarm instruction to the warning module when at least one of the inlet total nitrogen concentration, inlet COD concentration and inlet ammonia nitrogen concentration of the sewage homogenization device is greater than the preset threshold value of the inlet water quality.

[0143] In a specific embodiment, the data monitoring device 2 of the sewage treatment system further includes a homogenizing tank inlet flow monitoring device (not shown in the figure) and a homogenizing tank liquid level monitoring device (not shown in the figure);

[0144] The homogenization tank inlet flow monitoring device is used to monitor the inlet flow data of the sewage homogenization device 3;

[0145] A homogenization tank liquid level monitoring device, used to monitor the inlet liquid level data of the sewage homogenization device 3;

[0146] The control decision submodule 1012 is also used to determine whether the water inlet flow data of the sewage homogenizer 3 is greater than the preset threshold of the water inlet flow, or whether the water inlet level data of the sewage homogenizer 3 is greater than the preset threshold of the water inlet level. If so, an opening instruction is sent to the water inlet emergency drain valve.

[0147] In a specific embodiment, the control decision submodule 1012 is also used to send a warning alarm instruction to the warning module when the water inlet flow data of the sewage homogenizer 3 is greater than the preset threshold of the water inlet flow, or the water inlet level data of the sewage homogenizer 3 is greater than the preset threshold of the water inlet level.

[0148] In an embodiment of the present invention, when refinery wastewater enters the wastewater homogenization device 3, the data monitoring device 2 can collect the inlet water quality data, inlet flow data and inlet liquid level data of the wastewater entering the wastewater homogenization device 3. If the control decision submodule 1012 of the central control device 1 analyzes any one of the collected wastewater water quality data, flow data and liquid level data, when one of the inlet water quality data, inlet flow data and inlet liquid level data exceeds a preset threshold, an opening instruction is sent to the inlet accident drain valve, and the inlet accident drain valve is opened, thereby introducing the wastewater in the wastewater homogenization device 3 into the accident buffer device 9.

[0149] At this time, the sewage treatment system enters the accident mode. In the accident mode, the sewage treatment system can be controlled manually, and the operating parameters of all controlled equipment are manually adjusted by technicians. Of course, in the accident mode, the data monitoring device 2 can continue to work, collecting the water inlet characteristic parameter data and the water quality state parameter data of each sewage treatment device, so that the technicians can adjust the controlled equipment according to the actual sewage treatment state.

[0150] In one embodiment, the monitoring and discharge device 8 of the sewage treatment system includes a water outlet accident drainage valve (not shown in the figure); the water outlet accident drainage valve is connected to the accident buffer device 9;

[0151] The data monitoring device also includes an outlet water total nitrogen concentration monitoring device (not shown in the figure), an outlet water COD concentration monitoring device (not shown in the figure) and an outlet water ammonia nitrogen concentration monitoring device (not shown in the figure);

[0152] An outlet water total nitrogen concentration monitoring device, used to monitor the outlet water total nitrogen concentration of the monitoring discharge device;

[0153] An outlet COD concentration monitoring device, used to monitor the outlet COD concentration of the monitoring discharge device;

[0154] An outlet ammonia nitrogen concentration monitoring device, used to monitor the outlet ammonia nitrogen concentration of the monitoring discharge device;

[0155] The control decision submodule 1012 is also used to determine whether at least one of the effluent total nitrogen concentration, effluent COD concentration and effluent ammonia nitrogen concentration of the monitoring discharge device is greater than the preset threshold value of the effluent water quality. If so, an opening instruction is sent to the effluent emergency drain valve.

[0156] In a specific embodiment, the control decision submodule 1012 is also used to send a warning alarm instruction to the warning module when at least one of the effluent total nitrogen concentration, effluent COD concentration and effluent ammonia nitrogen concentration of the monitored discharge device is greater than a preset threshold value of the effluent water quality.

[0157] In a specific embodiment, the data monitoring device 2 further includes a discharge pool effluent flow monitoring device (not shown in the figure) and a discharge pool liquid level monitoring device (not shown in the figure);

[0158] The discharge pool effluent flow monitoring device is used to monitor the effluent flow data of the discharge device 8;

[0159] A discharge tank liquid level monitoring device, used to monitor the outlet liquid level data of the discharge device 8;

[0160] The control decision submodule 1012 is also used to determine whether the water flow data is greater than a preset threshold of the water flow, or whether the water level data is greater than a preset threshold of the water level. If so, an opening instruction is sent to the water outlet emergency drain valve.

[0161] In a specific embodiment, the control decision submodule 1012 is also used to send a warning alarm instruction to the warning module when the water flow rate data of the monitoring discharge device is greater than the preset threshold of the water flow rate, or when the water level data of the monitoring discharge device is greater than the preset threshold of the water level.

[0162] In the embodiment of the present invention, refer to Figure 1 As shown, the monitoring and discharge device 8 of the sludge treatment system also includes a standard water discharge valve (not shown in the figure), and the control decision submodule 1012 is also used to obtain the opening parameters to be adjusted of the standard water discharge valve based on the outlet water flow data of the monitoring and discharge device 8 and the outlet water level data of the monitoring and discharge device 8, and determine the feedback adjustment instructions based on the opening parameters to be adjusted of the standard water discharge valve.

[0163] In the embodiment of the present invention, when the refinery wastewater enters the monitoring discharge device 8, the data monitoring device 2 can collect the effluent water quality data, effluent flow data and effluent liquid level data entering the monitoring discharge device 8. If the data processing model submodule 1011 of the central control device 1 analyzes any one of the collected effluent water quality data, effluent flow data and effluent liquid level data, when it is determined that any one of the indicators of the effluent water quality data, effluent flow data and effluent liquid level data exceeds the preset threshold, the control decision submodule 1012 sends an opening instruction to the effluent accident drain valve, and the effluent accident drain valve is opened, thereby introducing the sewage in the monitoring discharge device 8 into the accident buffer device 9. At this time, the sewage treatment system will also enter the accident mode. In the accident mode, the operation mode of each controlled device of the sewage treatment system can be adjusted by manual operation. At this time, the control system of the sewage treatment system only collects the water inlet characteristic parameter data of the sewage treatment device through the data monitoring device, and / or collects the water quality state parameter data in the pool of the sewage treatment device. The manual control method of the sewage treatment system can refer to the detailed description in the prior art, and will not be repeated here. If it is determined that the water quality data, flow data and liquid level data are all within the preset range, the opening of the qualified water discharge valve is adjusted to discharge the treated sewage into the sewage deep treatment unit for deep sewage treatment.

[0164] Example 2

[0165] Based on the same inventive concept, an embodiment of the present invention further provides a control method for a control system for refinery wastewater treatment, comprising:

[0166] S101: Collecting water inlet characteristic parameter data of a sewage homogenizer and / or water quality status parameter data in a sewage treatment plant;

[0167] The water inlet characteristic parameter data includes at least one of the following data: water inlet quality data, water inlet flow data and water inlet level data;

[0168] The water quality state parameter data in the pool includes at least one of the following data: COD concentration data, pH value data, dissolved oxygen concentration data and sludge volume data, ammonia nitrogen concentration data and total nitrogen concentration data;

[0169] S102: determining a feedforward adjustment instruction for controlling the sewage treatment device according to the water inlet characteristic parameter data and / or the water quality state parameter data in the pool, and,

[0170] Determining feedback adjustment instructions for controlling the sewage treatment device according to the water quality status parameter data in the pool;

[0171] S103: Send the feedforward adjustment instruction and / or the feedback adjustment instruction to the corresponding controlled device of the sewage treatment device to control the controlled device to adjust the working state.

[0172] In the embodiment of the present invention, the specific implementation process of the control method of the control system for the above-mentioned refinery wastewater treatment can refer to the detailed description of the control system for refinery wastewater treatment in the above-mentioned embodiment 1, and will not be repeated in the embodiment of the present invention. The specific implementation process of realizing refinery wastewater treatment can refer to the relevant specific implementation methods in the prior art, and will not be repeated in the embodiment of the present invention.

[0173] Example 3

[0174] Based on the same inventive concept, an embodiment of the present invention further provides a refinery wastewater treatment system, including: the control system for refinery wastewater treatment described in the above embodiment 1.

[0175] In the embodiment of the present invention, the specific implementation of the above-mentioned refinery wastewater treatment system can refer to the detailed description of the control system for refinery wastewater treatment in the above-mentioned embodiment 1, and will not be repeated here in the embodiment of the present invention.

[0176] In the embodiment of the present invention, the specific implementation process of the above-mentioned sewage treatment system to achieve refinery sewage treatment can refer to the relevant specific implementation methods in the prior art, and will not be repeated here in the embodiment of the present invention.

[0177] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0178] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A control system for treating wastewater from a refinery, applied to a wastewater treatment system, wherein the wastewater treatment system comprises a wastewater homogenization device and at least one of the following wastewater treatment devices: an anaerobic biological reaction device, an anoxic biological reaction device, an aerobic biological reaction device, a sedimentation device, a monitoring and discharge device, and an accident buffer device, characterized in that: The control system includes a central control device and a data monitoring device; The data monitoring device is used to collect the water inlet characteristic parameter data of the sewage homogenization device, and collect the water quality state parameter data in the pool of the sewage treatment device, and send them to the central control device; the water inlet characteristic parameter data includes at least one of the following data: water quality data of the inlet water, water flow data of the inlet water and water level data of the inlet water; the water quality state parameter data in the pool includes at least one of the following data: COD concentration data, pH value data, dissolved oxygen concentration data, sludge amount data, ammonia nitrogen concentration data and total nitrogen concentration data; The central control device is used to determine a feedforward adjustment instruction for controlling the sewage treatment device according to the water inlet characteristic parameter data and / or the water quality state parameter data in the pool, and to determine a feedback adjustment instruction for controlling the sewage treatment device according to the water quality state parameter data in the pool, and to send the feedforward adjustment instruction and / or the feedback adjustment instruction to the corresponding controlled device of the sewage treatment device to control the controlled device to adjust the working state; The central control device includes a communication module and an analysis and calculation module; the analysis and calculation module includes a data processing model submodule and a control decision submodule; The data processing model submodule is used to calculate the feedforward amount to be adjusted in the sewage treatment device according to the inlet characteristic parameter data and / or the water quality state parameter data in the pool in the preset activated sludge model, and send it to the control decision submodule, and, in the activated sludge model, calculate the feedback amount to be adjusted in the sewage treatment device according to the water quality state parameter data in the pool; wherein, when the sewage treatment system is put into operation, the inlet characteristic parameter data of the sewage homogenizer, including the inlet water quality data, the inlet flow data and the inlet water level data, are collected by the data monitoring device, and the preset activated sludge model of the data processing model submodule is initialized according to the inlet characteristic parameter data of the sewage homogenizer to obtain the model parameters of the preset activated sludge model; The control decision submodule is used to obtain the operating parameters of the corresponding controlled device of the sewage treatment device according to the feedforward amount to be adjusted, and determine the feedforward adjustment instruction according to the operating parameters of the controlled device; and obtain the operating parameters to be adjusted of the controlled device according to the feedback amount to be adjusted and the current operating parameters of the controlled device, and determine the feedback adjustment instruction according to the operating parameters to be adjusted of the controlled device; The sewage treatment device further comprises a sludge return pump and a sludge discharge pump; the inlet of the sludge return pump is connected to the bottom sludge discharge port of the sedimentation device, and the outlet of the sludge return pump is connected to the aerobic tank of the aerobic biological reaction device; the inlet of the sludge discharge pump is connected to the bottom sludge discharge port; The data processing model submodule is used to calculate the sludge age data according to the sludge concentration of the aerobic tank, the tank capacity of the aerobic tank, the amount of sludge discharged from the sedimentation device and the return sludge concentration of the sludge return pump; The control decision submodule is used to obtain the operating parameters of the sludge efflux pump according to the sludge age data, and determine the sludge efflux pump adjustment instructions according to the operating parameters of the sludge efflux pump; The control decision submodule is further used to obtain the operating parameters of the sludge return pump according to the sludge concentration of the aerobic tank, and determine the sludge return pump adjustment instructions according to the operating parameters of the sludge return pump; The sedimentation device of the sewage treatment system includes a sludge discharge valve. The control decision submodule is also used to compare the sludge age data with a preset sludge age threshold to obtain the opening parameter to be adjusted of the sludge discharge valve, and determine the feedback adjustment instruction according to the opening parameter to be adjusted of the sludge discharge valve.

2. The control system for treating refinery wastewater according to claim 1, characterized in that: The communication module is used to send the received water inlet characteristic parameter data and / or the pool water quality status parameter data to the analysis and calculation module; And, sending the received feedforward adjustment instruction and feedback adjustment instruction to the controlled device.

3. The control system for treating refinery wastewater according to claim 1, characterized in that: The influent water quality data include influent total nitrogen concentration, influent COD concentration and influent ammonia nitrogen concentration; The data monitoring device includes an inlet total nitrogen concentration monitoring device, an inlet COD concentration monitoring device and an inlet ammonia nitrogen concentration monitoring device; The inlet total nitrogen concentration monitoring device is used to monitor the inlet total nitrogen concentration of the sewage homogenization device; The inlet COD concentration monitoring device is used to monitor the inlet COD concentration of the sewage homogenization device; The inlet ammonia nitrogen concentration monitoring device is used to monitor the inlet ammonia nitrogen concentration of the sewage homogenization device.

4. The control system for treating refinery wastewater according to claim 3, characterized in that: The anoxic biological reaction device comprises an anoxic tank and a carbon source adding device; The data processing model submodule is specifically used to obtain the feedforward carbon source dosage parameter data in the anoxic tank according to the influent total nitrogen concentration and the influent COD concentration in the activated sludge model; The control decision submodule is specifically used to obtain the feedforward operating parameters of the carbon source dosing equipment according to the feedforward carbon source dosage parameter data, and determine the feedforward adjustment instruction according to the feedforward operating parameters.

5. The control system for treating refinery wastewater according to claim 4, characterized in that: The data monitoring device includes an anoxic pool total nitrogen concentration monitoring device and an anoxic pool COD concentration monitoring device; the anoxic pool total nitrogen concentration monitoring device is used to monitor the total nitrogen concentration in the anoxic pool; the COD concentration monitoring device is used to monitor the COD concentration in the anoxic pool; The data processing model submodule is also used to obtain the parameter data of the carbon source dosage in the anoxic tank according to the total nitrogen concentration in the anoxic tank and the COD concentration in the anoxic tank in the activated sludge model; The control decision submodule is also used to obtain the feedback operating parameters of the carbon source adding equipment according to the feedback carbon source addition amount parameter data and the current operating parameters of the carbon source adding equipment, and determine the feedback adjustment instructions according to the feedback operating parameters.

6. The control system for treating refinery wastewater according to claim 3, characterized in that: The aerobic biological reaction device includes an aerobic tank, alkali solution adding equipment and aeration equipment; The data processing model submodule is specifically used to obtain the feedforward alkali dosage parameter data in the aerobic tank according to the influent ammonia nitrogen concentration in the preset activated sludge model, and to obtain the feedforward aeration parameter data in the aerobic tank according to the influent COD concentration; The control decision submodule is specifically used to obtain the feedforward operating parameters of the alkali solution dosing equipment according to the feedforward alkali dosage parameter data, and to obtain the feedforward operating parameters of the aeration equipment according to the feedforward aeration volume parameter data, and to determine the feedforward adjustment instructions according to the feedforward operating parameters of the alkali solution dosing equipment and the feedforward operating parameters of the aeration equipment.

7. The control system for treating refinery wastewater according to claim 6, characterized in that: The data monitoring device also includes a pH monitoring device and a dissolved oxygen monitoring device; the pH monitoring device is used to monitor the pH value data in the aerobic pool; the dissolved oxygen monitoring device is used to monitor the dissolved oxygen data in the aerobic pool; The data processing model submodule is also used to obtain the feedback alkali dosage parameter data in the aerobic tank according to the pH value data in the preset activated sludge model, and to obtain the feedback aeration parameter data in the aerobic tank according to the dissolved oxygen data; The control decision submodule is further used to obtain the feedback operating parameters of the alkali solution dosing equipment according to the feedback alkali dosage parameter data and the current operating parameters of the alkali solution dosing equipment, and to obtain the feedback operating parameters of the aeration equipment according to the feedback aeration volume parameter data and the current operating parameters of the aeration equipment, and to determine the feedback adjustment instructions according to the feedback operating parameters of the alkali solution dosing equipment and the feedback operating parameters of the aeration equipment.

8. The control system for treating refinery wastewater according to claim 7, characterized in that: The sewage treatment device further comprises a sewage return pump; the inlet of the sewage return pump is connected to the outlet of the aerobic tank, and the outlet of the sewage return pump is connected to the anoxic tank of the anoxic biological reaction device; The data monitoring device also includes an anoxic pool effluent total nitrogen monitoring device for monitoring the effluent total nitrogen concentration in the anoxic pool; The data processing model submodule is used to obtain feedforward sewage return ratio data according to the total nitrogen concentration of the influent, and to obtain feedback sewage return ratio data according to the total nitrogen concentration of the effluent in the anoxic tank; The control decision submodule is used to obtain the feedforward operating parameters of the sewage return pump according to the feedforward sewage return ratio data, and determine the feedforward adjustment instruction according to the feedforward operating parameters of the sewage return pump; And, based on the feedback sewage return ratio data, the feedback operation parameters of the sewage return pump are obtained, and based on the feedback operation parameters of the sewage return pump, the feedback adjustment instruction is determined.

9. The control system for treating refinery wastewater according to claim 8, characterized in that: The data monitoring device includes an aerobic tank sludge concentration monitoring device, a return sludge concentration monitoring device and a sludge flow monitoring device; the aerobic tank sludge concentration monitoring device is used to monitor the sludge concentration of the aerobic tank; the return sludge concentration monitoring device is used to monitor the return sludge concentration of the sludge return pump; the sludge flow monitoring device is used to monitor the amount of sludge discharged from the sedimentation device.

10. The control system for treating refinery wastewater according to claim 3, wherein the wastewater homogenization device comprises an inlet emergency drain valve, and the inlet emergency drain valve is connected to the emergency buffer device, characterized in that: The control decision submodule is also used to determine whether at least one of the inlet total nitrogen concentration, inlet COD concentration and inlet ammonia nitrogen concentration of the sewage homogenization device is greater than a preset threshold value of the inlet water quality. If so, an opening instruction is sent to the inlet emergency drain valve.

11. The control system for treating refinery wastewater according to claim 10, characterized in that: The data monitoring device also includes a homogenizing tank water inlet flow monitoring device and a homogenizing tank liquid level monitoring device; the homogenizing tank water inlet flow monitoring device is used to monitor the water inlet flow data; the homogenizing tank liquid level monitoring device is used to monitor the water inlet level data; The control decision submodule is also used to determine whether the water inlet flow data is greater than a preset water inlet flow threshold, or whether the water inlet liquid level data is greater than a preset water inlet liquid level threshold. If so, an opening instruction is sent to the water inlet emergency drain valve.

12. The control system for treating refinery wastewater according to claim 11, characterized in that: The monitoring and discharging device comprises a water discharge accident drain valve; the water discharge accident drain valve is connected to the accident buffer device; The data monitoring device also includes an outlet water total nitrogen concentration monitoring device, an outlet water COD concentration monitoring device and an outlet water ammonia nitrogen concentration monitoring device; The effluent total nitrogen concentration monitoring device is used to monitor the effluent total nitrogen concentration of the monitoring discharge device; The effluent COD concentration monitoring device is used to monitor the effluent COD concentration of the monitoring discharge device; The effluent ammonia nitrogen concentration monitoring device is used to monitor the effluent ammonia nitrogen concentration of the monitoring discharge device; The control decision submodule is also used to determine whether at least one of the effluent total nitrogen concentration, effluent COD concentration and effluent ammonia nitrogen concentration of the monitored discharge device is greater than a preset threshold value of the effluent water quality. If so, an opening instruction is sent to the effluent accident drain valve.

13. The control system for treating refinery wastewater according to claim 12, characterized in that: The data monitoring device also includes a discharge pool water flow monitoring device and a discharge pool liquid level monitoring device; the discharge pool water flow monitoring device is used to monitor the water flow data of the monitoring discharge device, and the discharge pool liquid level monitoring device is used to monitor the water level data of the monitoring discharge device; The control decision submodule is also used to determine whether the water outlet flow data is greater than a preset water outlet flow threshold, or whether the water outlet liquid level data is greater than a preset water outlet liquid level threshold. If so, an opening instruction is sent to the water outlet emergency drain valve.

14. The control system for treating refinery wastewater according to claim 13, characterized in that: The analysis and calculation module also includes: an early warning module; The control decision submodule is also used to send a warning alarm instruction to the warning module.

15. A control method for a control system for refinery wastewater treatment according to any one of claims 1 to 14, characterized in that: include: Collecting water inlet characteristic parameter data of a sewage homogenizer and water quality status parameter data in a sewage treatment plant; the water inlet characteristic parameter data includes at least one of the following data: water quality data of inlet water, water flow data of inlet water and water level data of inlet water; the water quality status parameter data in the pool includes at least one of the following data: COD concentration data, pH value data, dissolved oxygen concentration data, sludge volume data, ammonia nitrogen concentration data and total nitrogen concentration data; Determine a feedforward adjustment instruction for controlling the sewage treatment device according to the water inlet characteristic parameter data and / or the water quality state parameter data in the pool, and, Determining feedback adjustment instructions for controlling the sewage treatment device according to the water quality status parameter data in the pool; Sending the feedforward adjustment instruction and / or the feedback adjustment instruction to the corresponding controlled device of the sewage treatment device to control the controlled device to adjust the working state; The data processing model submodule calculates the feedforward amount to be adjusted in the sewage treatment device according to the influent characteristic parameter data and / or the water quality state parameter data in the pool in the preset activated sludge model, and sends it to the control decision submodule, and, in the activated sludge model, calculates the feedback amount to be adjusted in the sewage treatment device according to the water quality state parameter data in the pool; wherein, when the sewage treatment system is put into operation, the influent characteristic parameter data of the sewage homogenizer, including the influent water quality data, the influent flow data and the influent water level data, is collected by the data monitoring device, and the preset activated sludge model of the data processing model submodule is initialized according to the influent characteristic parameter data of the sewage homogenizer, so as to obtain the model parameters of the preset activated sludge model; Obtaining, by means of a control decision submodule, operating parameters of a corresponding controlled device of the sewage treatment device according to the feedforward amount to be adjusted, and determining the feedforward adjustment instruction according to the operating parameters of the controlled device; and obtaining the operating parameters to be adjusted of the controlled device according to the feedback amount to be adjusted and the current operating parameters of the controlled device, and determining the feedback adjustment instruction according to the operating parameters to be adjusted of the controlled device; The sludge age data is calculated by the data processing model submodule according to the sludge concentration of the aerobic tank, the tank capacity of the aerobic tank, the sludge discharge volume of the sedimentation device and the return sludge concentration of the sludge return pump; Obtaining the operating parameters of the sludge efflux pump according to the sludge age data through the control decision submodule, and determining the sludge efflux pump adjustment instructions according to the operating parameters of the sludge efflux pump; Obtaining the operating parameters of the sludge return pump according to the sludge concentration of the aerobic tank through the control decision submodule, and determining the sludge return pump adjustment instructions according to the operating parameters of the sludge return pump; The control decision submodule compares the sludge age data with the preset sludge age threshold to obtain the opening parameter of the sludge discharge valve to be adjusted, and determines the feedback adjustment instruction according to the opening parameter of the sludge discharge valve to be adjusted.

16. A refinery wastewater treatment system, characterized in that: include: A control system for treating refinery wastewater as described in any one of claims 1 to 14.

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