Combined intelligent dosing system for treating energy chemical wastewater

Abstract

The utility model provides a combined intelligent dosing system for treating energy chemical wastewater, which comprises a pH (Potential of Hydrogen) regulating medicament dosing device, a PAC (Poly Ammonium Chloride) / PAM (Polyacrylamide) medicament dosing device and a carbon source medicament dosing device, and each medicament dosing device can be fixed on a skid-mounted base in an independent or combined manner according to the actual requirements of wastewater treatment. The requirements of various wastewater treatment units can be met. An automatic control system is arranged in each chemical adding device, and a chemical adding operation program built in the automatic control system controls the operation of the chemical adding metering pump set according to the water quality of the wastewater to be treated and the effluent water quality target, so that automatic chemical adding and accurate chemical adding are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a combined intelligent dosing system for treating energy and chemical wastewater. Background Art

[0002] With the rapid development of industrialization and urbanization, sewage treatment has become an important issue facing today's society. The amount of energy and chemical wastewater varies greatly and the water quality fluctuates greatly. The main process of wastewater treatment includes: pretreatment, biochemical treatment and deep treatment. Each link involves the chemical dosing system. Traditional sewage treatment chemical dosing methods are mostly manual or semi-automatic, which are often inefficient and labor-intensive. It is impossible to accurately dosing chemicals, and the treated wastewater often does not meet the water quality standards. In recent years, thanks to the development of water treatment instrument sensors and the progress of water treatment industrial control technology, dosing equipment has also made great substantive progress, and the research and development of fully automatic intelligent dosing devices has continued to increase.

[0003] Invention patent CN201610764076.0 discloses an intelligent dosing system, which includes a medicine tank, a medicine stirring device, and a precision dosing device connected in sequence. The precision dosing device includes a precision metering pump, an intelligent dosing formula controller, an inlet water quality detection device, an outlet water quality detection device, and an outlet water flow meter. The inlet of the precision metering pump is connected to the outlet of the concentration proportioning device, and its outlet is connected to the secondary sedimentation tank or the flocculation tank. The inlet water quality detection device, the outlet water quality detection device, and the outlet water flow meter are all connected to the intelligent dosing formula controller. The intelligent dosing formula controller controls the dosing amount of the precision metering pump; the intelligent dosing formula controller includes an information adoption module, a data index module, a formula database module, an intelligent formula learning module, and a control output module; through its intelligent learning process, automatic and precise dosing control can be achieved, the cost of medicines can be saved, the water quality is not affected by the inlet water quality, and the outlet water quality is stable. It mainly describes the information module to control the dosage of medicines and the machine learning process, and the objects covered are relatively single and limited in application. Utility Model Content

[0004] In view of the above technical problems, the purpose of the utility model is to provide a combined intelligent dosing system for treating energy and chemical wastewater, including a pH adjustment agent dosing device, a PAC / PAM agent dosing device and a carbon source agent dosing device. Each agent dosing device can be used alone or freely combined according to the actual needs of wastewater treatment, and the application is flexible. The automatic control system in each agent dosing device controls the operation of the dosing metering pump group according to the wastewater quality and treatment requirements to realize automatic dosing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A combined intelligent dosing system for treating energy and chemical wastewater, comprising: a skid-mounted base, a pH adjusting agent dosing device, a PAC / PAM agent dosing device, a carbon source agent dosing device and an agent storage device; the pH adjusting agent dosing device is fixed on the skid-mounted base, and the pH adjusting agent dosing device is provided with a first automatic control system, the first automatic control system is used to calculate the pH adjusting agent dosage according to the wastewater quality and treatment requirements, and control the pH adjusting agent dosing device to automatically dosing the pH adjusting agent into the wastewater treatment reaction tank; the PAC / PAM agent dosing device is fixed on the skid-mounted base, and the PAC / PAM agent dosing device is provided with a second automatic control system, the second automatic control system is used to calculate the PAC agent dosage and / or PAM agent dosage according to the wastewater quality and the treatment requirements, and controlling the PAC / PAM agent dosing device to automatically dosing PAC agent and / or PAM agent into the wastewater treatment reaction tank; the carbon source agent dosing device is fixed on the skid-mounted base, and the carbon source agent dosing device is provided with a third automatic control system, and the third automatic control system is used to calculate the carbon source dosage according to the wastewater quality and the treatment requirements, and control the carbon source agent dosing device to automatically dosing the carbon source into the wastewater treatment reaction tank; the pH adjusting agent dosing device, the PAC / PAM agent dosing device and the carbon source agent dosing device are independent of each other and can be flexibly combined according to the needs of wastewater treatment; the agent storage device is used to input pH adjusting agent, PAC / PAM agent and carbon source into the pH adjusting agent dosing device, the PAC / PAM agent dosing device and the carbon source agent dosing device, respectively.

[0007] In some embodiments, the pH adjusting agent dosing device includes: a pH adjusting and dosing metering pump group and a first pH online detector; the first pH online detector is used to detect the pH value of the wastewater in the wastewater treatment reaction tank; the pH adjusting and dosing metering pump group and the pH online detector are respectively electrically connected to the first automatic control system, and the first automatic control system controls the operating state of the pH adjusting and dosing metering pump group according to the pH value of the wastewater detected by the first pH online detector.

[0008] In some embodiments, the PAC / PAM agent dosing device includes: a PAC / PAM dosing metering pump group, a second pH online detector and a turbidity online detector; the second pH online detector is used to detect the pH value of the wastewater in the wastewater treatment reaction tank; the turbidity online detector is used to detect the turbidity of the wastewater in the wastewater treatment reaction tank; the PAC / PAM dosing metering pump group, the second pH online detector and the turbidity online detector are electrically connected to the second automatic control system respectively, and the second automatic control system controls the operating state of the PAC / PAM dosing metering pump group according to the wastewater pH value detected by the second pH online detector, the wastewater turbidity detected by the turbidity online detector and the wastewater inlet flow rate.

[0009] In some embodiments, the carbon source agent dosing device includes: a carbon source dosing metering pump group, a COD online detector and a nitrate nitrogen online detector; the COD online detector is used to detect the COD value of the wastewater in the wastewater treatment reaction tank; the nitrate nitrogen online detector is used to detect the nitrate nitrogen content of the wastewater in the wastewater treatment reaction tank; the carbon source dosing metering pump group, the COD online detector and the nitrate nitrogen online detector are electrically connected to the third automatic control system respectively, and the third automatic control system controls the operating state of the carbon source dosing metering pump group according to the COD value of the wastewater, the nitrate nitrogen content of the wastewater and the wastewater inlet flow rate.

[0010] In some embodiments, the pH adjusting agent dosing device includes a pH adjusting dosing pump group, and the pH adjusting dosing pump group includes an acid dosing pump and an alkali dosing pump; the pH adjusting agent dosing device also includes: a first cabinet, and the first cabinet is provided with a first agent inlet and a first agent outlet, the input end of the acid dosing pump and the input end of the alkali dosing pump are respectively connected to the first agent inlet through a pipeline, and the output end of the acid dosing pump and the output end of the alkali dosing pump are respectively connected to the first agent outlet through a pipeline; and / or, the PAC / PAM agent dosing device includes a PAC / PAM dosing pump group, and the PAC / PAM dosing pump group includes a PAC dosing pump and a P AM dosing metering pump; the PAC / PAM agent dosing device also includes a second cabinet, the second cabinet is provided with a second agent inlet and a second agent outlet, the input end of the PAC dosing metering pump and the input end of the PAM dosing metering pump are respectively connected to the second agent inlet through a pipeline, and the output end of the PAC dosing metering pump and the output end of the PAM dosing metering pump are respectively connected to the second agent outlet through a pipeline; and / or, the carbon source agent dosing device also includes: a third cabinet, the third cabinet is provided with a third agent inlet and a third agent outlet, the input end of the carbon source dosing metering pump group is connected to the third agent inlet through a pipeline, and the output end of the carbon source dosing metering pump group is connected to the third agent outlet through a pipeline.

[0011] In some embodiments, the pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device all adopt a cabinet structure, and the cabinet of the pH adjusting agent dosing device is divided into a first accommodating space and a second accommodating space. The pH adjusting agent dosing device is provided with a pH adjusting dosing metering pump group, and the pH adjusting dosing metering pump group is arranged in the second accommodating space, and the first automatic control system is arranged in the first accommodating space; the cabinet of the PAC / PAM agent dosing device is divided into a third accommodating space. The PAC / PAM agent dosing device is provided with a PAC / PAM dosing metering pump group, which is arranged in the fourth accommodating space, and the second automatic control system is arranged in the third accommodating space; the interior of the cabinet of the carbon source agent dosing device is divided into a fifth accommodating space and a sixth accommodating space, the carbon source agent dosing device is provided with a carbon source dosing metering pump group, which is arranged in the sixth accommodating space, and the third automatic control system is arranged in the fifth accommodating space.

[0012] In some embodiments, the first automatic control system, the second automatic control system and the third automatic control system all include: a PLC controller, a touch screen and a frequency converter, the touch screen is electrically connected to the PLC controller, and is used to receive control signals transmitted by the PLC controller and display control parameters in real time, and for operators to input control parameters; the frequency converter is electrically connected to the dosing metering pump group and the PLC controller, respectively, and is used to adjust the operating state of the dosing metering pump group according to the control instructions of the PLC controller.

[0013] In some embodiments, the drug storage device includes: multiple high and low liquid level sensors, multiple drug storage containers, multiple drug output pipelines, multiple agitators, vent pipes and vent valves; the high and low liquid level sensors are arranged in the drug storage containers, and the high and low liquid level sensors are used to detect the drug liquid level in the drug storage containers; the drug output pipelines are connected to the drug storage containers one by one; the multiple drug storage containers are used to respectively contain pH adjusting agents, PAC agents, PAM agents and carbon sources; the drug inlet of the pH adjusting agent dosing device, the drug inlet of the PAC / PAM agent dosing device, and the drug inlet of the carbon source agent dosing device are respectively connected to the drug storage containers containing corresponding agents through the drug output pipelines; the agitator is arranged in the drug storage container, and the agitator is used to evenly stir the drugs stored in the drug storage container; the vent valve is arranged on the vent pipe, and the vent pipe is connected to the bottom of the drug storage container.

[0014] In some embodiments, the pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device are all provided with: an audible and visual alarm device, which is used to emit sound and flash to remind the operator when the device fails or the agent is insufficient; and / or, the pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device are all provided with a grid plate, which is used for the outflow and ventilation of the leaked liquid in the device; the skid-mounted base is provided with a hanging A ring or a forklift groove, the lifting ring is used for lifting and moving the equipment, and the forklift groove is used for the forklift arm of an external forklift to extend into to move the equipment; and / or, the skid-mounted base is provided with a universal wheel for facilitating the movement of the device, and the universal wheel is provided with a brake mechanism; and / or, the skid-mounted base is provided with a plurality of mounting holes, and the plurality of mounting holes are used to respectively install the pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device; and / or, the skid-mounted base is made of carbon steel or stainless steel.

[0015] In some embodiments, the wastewater treatment reaction tank includes a pretreatment reaction tank, a biochemical treatment reaction tank and a deep treatment reaction tank in the order of the wastewater treatment process, and the biochemical treatment reaction tank includes an anaerobic tank, an anoxic tank and an aerobic tank; the pH adjusting agent dosing device can be used to calculate the optimal dosage of the pH adjusting agent according to the wastewater quality and treatment requirements, and automatically add the pH adjusting agent to the pretreatment reaction tank; the PAC / PAM agent dosing device can be used to calculate the optimal dosage of the PAC agent and / or the PAM agent according to the wastewater quality and treatment requirements, and automatically add the PAC agent and / or the PAM agent to the pretreatment reaction tank and the deep treatment reaction tank respectively; the carbon source agent dosing device can be used to calculate the optimal dosage of the carbon source according to the wastewater quality and treatment requirements, and automatically add the carbon source to the anoxic tank respectively.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The pH adjusting agent dosing device, PAC / PAM agent dosing device and carbon source agent dosing device in the combined intelligent dosing system provided by the utility model can be used separately or in combination according to the needs of wastewater treatment, and have strong flexibility to meet the needs of different wastewater treatment units;

[0018] 2. Each reagent dosing device in the combined intelligent dosing system provided by the utility model can monitor the water quality of the inlet and outlet water online, and feed back the monitoring data to the respective automatic control systems. The PLC controller of the automatic control system has a built-in dosing operation program, which dynamically calculates the reagent demand through a mathematical model, adjusts the operating state of the dosing metering pump in real time, and then adjusts the reagent dosage to the wastewater reaction tank, so as to achieve accurate dosing, save reagent costs, and ensure stable effluent water quality;

[0019] 3. The combined intelligent dosing system provided by the utility model has a compact structure, is flexible to use, is convenient to move and combine, and also has the advantages of being adaptable to continuous operation and simple operation and management. It has good practical value and is worthy of promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the combined intelligent dosing system for treating energy and chemical wastewater provided by the utility model;

[0022] Figure 2 A structural schematic diagram of a combined intelligent dosing system in another embodiment of the present invention;

[0023] Figure 3A side view of the combined intelligent dosing system provided by the utility model;

[0024] Figure 4 The utility model provides an application of the combined intelligent dosing system.

[0025] The meanings of the symbols in the accompanying drawings are as follows:

[0026] 1—skid mounted base;

[0027] 2—pH adjusting agent dosing device; 21—first cabinet; 22—first agent inlet; 23—first agent outlet; 24—acid dosing metering pump; 25—alkali dosing metering pump; 26—first online detector controller;

[0028] 3—PAC / PAM dosing device; 31—second cabinet; 32—second dosing inlet; 33—second dosing outlet; 34—PAC dosing metering pump; 35—PAM dosing metering pump; 36—second pH online detector controller; 37—turbidity online detector controller

[0029] 4—Carbon source agent dosing device; 41—third cabinet; 42—third agent inlet; 43—third agent outlet; 44—Carbon source agent dosing metering pump; 45—COD online detector controller; 46—Nitrates nitrogen online detector controller;

[0030] 5—PLC controller; 6—touch screen; 7—frequency converter; 8—grid plate; 9—steel structure support; 10—heat dissipation mesh plate. DETAILED DESCRIPTION

[0031] The present invention is further explained in detail below in conjunction with the drawings and descriptions of specific embodiments. However, the following descriptions including the embodiments are only intended to enable ordinary technicians in the technical field to which the present invention belongs to more clearly understand the principles and essence of the present invention, and do not mean any form of limitation on the present invention.

[0032] Example 1

[0033] like Figures 1 to 3As shown, this embodiment provides a combined intelligent dosing system for treating energy and chemical wastewater, including: a skid-mounted base 1, a pH adjusting agent dosing device 2, a PAC / PAM agent dosing device 3, a carbon source agent dosing device 4 and a agent storage device. The skid-mounted base 1 is provided with mounting fixing holes for installing the above-mentioned three agent dosing devices. The pH adjusting agent dosing device 1, the PAC / PAM agent dosing device 2 and the carbon source agent dosing device 3 are independent of each other and can be flexibly combined according to the needs of wastewater treatment, such as the pH adjusting agent dosing device 2 and the PAC / PAM agent dosing device 3 are used in combination, the PAC / PAM agent dosing device 2 and the carbon source agent dosing device 3 are used in combination, and the three agent dosing devices are used in combination.

[0034] Specific:

[0035] The pH adjusting agent dosing device 2 is fixed on the skid-mounted base 1, and the pH adjusting agent dosing device 2 is provided with a first automatic control system, which is used to control the pH adjusting agent dosing device 2 to automatically dosing the pH adjusting agent into the wastewater treatment reaction tank.

[0036] The PAC / PAM agent dosing device 2 is fixed on the skid-mounted base 1, and the PAC / PAM agent dosing device 2 is provided with a second automatic control system, which is used to control the PAC / PAM agent dosing device 2 to automatically add PAC agent and / or PAM agent to the wastewater treatment reaction tank.

[0037] The carbon source agent dosing device 3 is fixed on the skid-mounted base 1, and is provided with a third automatic control system, which is used to control the carbon source agent dosing device 3 to automatically add carbon source to the wastewater treatment reaction tank.

[0038] The above-mentioned reagent storage device inputs pH regulating reagent, PAC / PAM reagent and carbon source into pH regulating reagent dosing device 2, PAC / PAM reagent dosing device 3 and carbon source reagent dosing device 4 respectively.

[0039] In some embodiments, the above-mentioned first automatic control system, second automatic control system, and third automatic control system all include a PLC controller 5, a touch screen 6, and a frequency converter 7. The touch screen 6 and the frequency converter 7 are electrically connected to the PLC controller 5 respectively. The PLC controller 5 has a built-in dosing operation program. The touch screen 6 can receive the control signal transmitted by the PLC controller 5 and display the control parameters in real time, and provide the operator with input of the control parameters. The frequency converter 7 is also connected to the dosing metering pump group in each drug dosing device, and adjusts the operating status of the dosing metering pump group according to the control instructions of the PLC controller 5.

[0040] In some embodiments, the pH adjusting agent dosing device 2 comprises: a pH adjusting agent dosing metering pump group and a first pH online detector, and the pH adjusting agent dosing metering pump group is disposed in the first cabinet 1 .

[0041] The first pH online detector is used to detect the pH value of wastewater in the wastewater treatment reaction tank.

[0042] The pH regulating and dosing metering pump group and the pH online detector are electrically connected to the first automatic control system respectively. The first automatic control system controls the operating state of the pH regulating and dosing metering pump group according to the wastewater pH value detected by the first pH online detector, that is, the first automatic control system controls the start and stop, speed, flow rate and other parameters of the pH regulating and dosing metering pump group, thereby automatically adding pH regulating agents to the wastewater treatment reaction tank and controlling the amount of pH regulating agents added.

[0043] Furthermore, the pH adjusting agent dosing device 2 is fixed on the skid-mounted base 1 in the form of a cabinet, and the pH adjusting agent dosing metering pump group includes an acid dosing metering pump 24 and an alkali dosing metering pump 25, and the acid dosing metering pump 24 and the alkali dosing metering pump 25 are both electrically connected to the first automatic control system. Specifically:

[0044] The pH adjusting agent dosing device 2 comprises a first cabinet 21, on which a first agent inlet 22 and a first agent outlet 23 are provided, the input end of an acid dosing metering pump 24 and the input end of an alkali dosing metering pump 25 are respectively connected to the first agent inlet 22 through pipelines, and the output end of the acid dosing metering pump 24 and the output end of the alkali dosing metering pump 25 are respectively connected to the first agent outlet 23 through pipelines.

[0045] More specifically, the acid dosing metering pump 24 and the alkali dosing metering pump 25 are electrically connected to the frequency converter 7 of the first automatic control system respectively. The PLC controller 5 of the first automatic control system is set with a dosing operation program. The operator can input operation parameters on the touch screen 6. The PLC controller 5 outputs a control signal to the frequency converter 7 after the input parameters are operated by the program. The frequency converter 7 then controls the operating status of the acid dosing metering pump 24 and the alkali dosing metering pump 25 according to the control signal.

[0046] Preferably, the interior of the first cabinet 21 is divided into a first accommodating space and a second accommodating space by a partition, the first automatic control system is arranged in the first accommodating space, the acid dosing metering pump 24 and the alkali dosing metering pump 25 are both arranged in the second accommodating space, and in addition, an inspection door is arranged on the cabinet side walls corresponding to the first accommodating space and the second accommodating space, which can facilitate the operator to inspect the control system and the pH adjustment dosing metering pump group respectively.

[0047] More preferably, the partition divides the interior of the first cabinet 21 into an upper and lower part. The upper part of the first cabinet 21 is the first accommodating space, and the lower part of the first cabinet 21 is the second accommodating space. A steel structure bracket 9 is provided in the second accommodating space. The first cabinet 21 is fixed to the skid-mounted base 1 by connecting the steel structure bracket 9 with the mounting fixing hole. The acid dosing metering pump 24 and the alkali dosing metering pump 25 are fixed on the steel structure bracket 9 and are equipped with a safety valve, a back pressure valve, a damper, and a pressure gauge to ensure the stable operation of the pH adjusting agent dosing device 2.

[0048] On this basis, the first medicine inlet 22 and the first medicine outlet 23 can be both arranged on the cabinet side wall corresponding to the second accommodating space, or can be respectively arranged on the cabinet side walls corresponding to the first accommodating space and the second accommodating space, such as Figure 1 As shown, the first medicine inlet 22 is arranged on the cabinet side wall corresponding to the second accommodating space, and the first medicine outlet 23 is arranged on the cabinet side wall corresponding to the first accommodating space.

[0049] The above-mentioned first pH online detector includes a first pH electrode and a first pH online detector controller 26. The first pH electrode and the first online detector controller 26, the first online detector controller 26 and the first automatic control system are all electrically connected. The first pH electrode is placed at the inlet and outlet positions of the wastewater treatment reaction tank, and the first online detector controller 26 is installed in the first accommodating space of the first cabinet 21.

[0050] Specific operation steps: a pH value is set on the touch screen 6, and the first pH electrode transmits the real-time detected pH value data to the first online detector controller 26, and then transmitted by the first online detector controller 26 to the first automatic control system, and accurately displayed through the touch screen 6 on the first cabinet 21. At the same time, the dosing operation program in the PLC controller 5 combines the set pH value, the real-time monitored pH value, and the water inlet flow rate for calculation, converts the calculation result into an execution signal, and outputs the execution signal to the frequency converter 7 corresponding to the acid dosing metering pump 24 and the alkali dosing metering pump 25 respectively. The frequency converter 7 controls the operating status of the acid dosing metering pump 24 and the alkali dosing metering pump 25, and then adds a certain amount of acid regulator and alkali regulator to the wastewater in the wastewater treatment reaction tank.

[0051] In some embodiments, the PAC / PAM dosing device 3 includes: a PAC / PAM dosing metering pump group, a second pH online detector and a turbidity online detector, and the PAC / PAM dosing metering pump group is disposed in the second cabinet 31 .

[0052] The second pH online detector is used to detect the pH value of the wastewater in the wastewater treatment reaction tank, and the turbidity online detector is used to detect the turbidity of the wastewater in the wastewater treatment reaction tank.

[0053] The PAC / PAM dosing metering pump group, the second pH online detector and the turbidity online detector are electrically connected to the second automatic control system respectively. The second automatic control system controls the operating state of the PAC / PAM dosing metering pump group according to the wastewater pH value detected by the second pH online detector, the wastewater turbidity detected by the turbidity online detector and the wastewater inlet flow rate, that is, the second automatic control system controls the start and stop, speed, flow rate and other parameters of the PAC / PAM dosing metering pump group, thereby automatically adding PAC regulator or PAM regulator to the wastewater treatment reaction tank and controlling the dosage of the added agent.

[0054] Furthermore, the PAC / PAM dosing device 3 is also fixed on the skid-mounted base 1 in the form of a cabinet, and the PAC / PAM dosing metering pump group includes a PAC dosing metering pump 34 and a PAM dosing metering pump 35, and the PAC dosing metering pump 34 and the PAM dosing metering pump 35 are electrically connected to the second control system respectively. Specifically:

[0055] The PAC / PAM drug dosing device 3 also includes a second cabinet 31, on which a second drug inlet 32 ​​and a second drug outlet 33 are provided. The input end of the PAC drug dosing metering pump 34 and the input end of the PAM drug dosing metering pump 35 are respectively connected to the second drug inlet 32 ​​through pipelines, and the output end of the PAC drug dosing metering pump 34 and the output end of the PAM drug dosing metering pump 35 are respectively connected to the second drug outlet 33 through pipelines.

[0056] Preferably, the second control system controls the PAC dosing metering pump 34 and the PAM dosing metering pump 35 in the same manner as the above-mentioned first automatic control system controls the acid dosing metering pump 24 and the alkali dosing metering pump 25, which will not be repeated here.

[0057] Preferably, the interior of the second cabinet 31 is divided into a third accommodation space and a fourth accommodation space by a partition, the second automatic control system is arranged in the third accommodation space, and the PAC dosing metering pump 34 and the PAM dosing metering pump 35 are both arranged in the fourth accommodation space. Similarly, an inspection door is arranged on the cabinet side wall corresponding to the third accommodation space and the fourth accommodation space for easy maintenance.

[0058] More preferably, the internal structure of the second cabinet 31 is the same as the internal structure of the first cabinet 21, and the partition divides the interior of the second cabinet 31 into an upper and lower part, the upper part is the third accommodating space, and the lower part is the fourth accommodating space. A steel structure bracket 9 is provided in the fourth accommodating space, and a PAC dosing metering pump 34 and a PAM dosing metering pump 35 are fixed on the steel structure bracket 9, and are equipped with a safety valve, a back pressure valve, a damper, and a pressure gauge to ensure the stable operation of the PAC / PAM agent dosing device 3.

[0059] On this basis, the setting structure of the second medicine inlet 32 ​​and the second medicine outlet 33 refers to the setting structure of the first medicine inlet 22 and the first medicine outlet 23. Preferably, the second medicine inlet 32 ​​is set on the cabinet side wall corresponding to the fourth accommodating space, and the second medicine outlet 3 is set on the cabinet side wall corresponding to the third accommodating space.

[0060] In some embodiments, the structure and installation of the second pH online detector are the same as those of the first pH online detector described above, including a second pH electrode and a second online detector controller 36. The second online detector controller 36 is electrically connected to the second automatic control system, and the second pH electrode is placed at the inlet and outlet positions of the wastewater treatment reaction tank. The second online detector controller 36 is installed in the third accommodation space of the second cabinet 31.

[0061] The turbidity online detector includes: turbidity detection electrode and turbidity online detector controller 37 The turbidity detection electrode and the turbidity online detector controller 37, and the turbidity online detector controller 37 and the second automatic control system are all electrically connected. The turbidity detection electrode is arranged at the inlet and outlet positions of the wastewater treatment reaction tank, and the turbidity online detector controller 37 is installed in the third accommodating space of the second cabinet 31.

[0062] Specific operation steps: the second pH electrode transmits the real-time detected pH value data to the second automatic control system, which is accurately displayed on the touch screen 6 on the second cabinet 32. At the same time, the dosing operation program in the PLC controller 5 combines the set pH value, the measured pH value, and the water inlet flow rate for calculation, and converts the calculation result into an execution signal and outputs it to the frequency converter 7 corresponding to the PAC dosing metering pump 34 and the PAM dosing metering pump 35. The frequency converter 7 controls the operating status of the PAC dosing metering pump 34 and the PAM dosing metering pump 35, and adds a quantitative amount of PAC regulator and PAM regulator to the wastewater in the wastewater treatment reaction tank.

[0063] In some embodiments, the carbon source agent dosing device 4 includes: a carbon source dosing metering pump group, a COD online detector and a nitrate nitrogen online detector.

[0064] The COD online detector is used to detect the COD value of wastewater in the wastewater treatment reaction tank.

[0065] The nitrate nitrogen online detector is used to detect the nitrate nitrogen content in the wastewater treatment reaction tank.

[0066] The carbon source dosing metering pump group, the COD online detector and the nitrate nitrogen online detector are electrically connected to the third automatic control system respectively. The third automatic control system controls the operating state of the carbon source dosing metering pump group according to the COD value of the wastewater, the nitrate nitrogen content of the wastewater and the wastewater inlet flow rate, that is, controls the start and stop, speed, flow rate and other parameters of the carbon source dosing metering pump group, thereby automatically adding carbon source to the wastewater treatment reaction tank and controlling the amount of carbon source added.

[0067] In some embodiments, the carbon source agent dosing device 4 is fixed on the skid-mounted base 1 in the form of a cabinet, and the carbon source dosing metering pump group includes two carbon source dosing metering pumps 44, one for use and one for backup, and the carbon source dosing metering pump 44 is electrically connected to the third control system. Specifically:

[0068] The carbon source agent dosing device 4 comprises a third cabinet 41, on which a third agent inlet 42 and a third agent outlet 43 are provided. The input end of the carbon source agent dosing metering pump is connected to the third agent inlet 42 through a pipeline, and the output end of the carbon source agent dosing metering pump is connected to the third agent outlet 43 through a pipeline.

[0069] Preferably, the carbon source dosing metering pump 44 is electrically connected to the frequency converter 7 of the third control system. The control method of the carbon source dosing metering pump 44 by the third automatic control system is the same as the control method of the acid dosing metering pump 24 and the alkali dosing metering pump 25 by the above-mentioned first automatic control system, which will not be repeated here.

[0070] Preferably, the interior of the third cabinet 41 is divided into a fifth accommodation space and a sixth accommodation space by a partition, the second automatic control system is arranged in the fifth accommodation space, and the carbon source dosing metering pump 44 is arranged in the sixth accommodation space. Similarly, an inspection door is arranged on the cabinet side wall corresponding to the fifth accommodation space and the sixth accommodation space for easy maintenance.

[0071] More preferably, the internal structure of the third cabinet 41 is the same as the internal structure of the first cabinet 21 and the second cabinet 31, and the partition divides the interior of the third cabinet 41 into an upper and lower part, the upper part is the fifth accommodating space, and the lower part is the sixth accommodating space. A steel structure bracket 9 is provided in the sixth accommodating space, and the carbon source dosing metering pump 44 is fixed on the steel structure bracket 9, and is equipped with a safety valve, a back pressure valve, a damper, and a pressure gauge to ensure the stable operation of the carbon source agent dosing device 4.

[0072] On this basis, the setting structure of the third medicine inlet 42 and the third medicine outlet 43 refers to the setting structure of the first medicine inlet 22 and the first medicine outlet 23. Preferably, the third medicine inlet 42 is set on the cabinet side wall corresponding to the sixth accommodating space, and the third medicine outlet 43 is set on the cabinet side wall corresponding to the fifth accommodating space.

[0073] In some embodiments, the COD online detector includes a COD detection electrode and a COD online detector controller 45. The COD detection electrode and the COD online detector controller 45, the COD online detector controller 45 and the third automatic control system are electrically connected. The COD detection electrode is placed at the inlet and outlet of the wastewater treatment reaction tank to monitor the COD value of the wastewater at the inlet and outlet. The COD online detector controller 45 is installed in the fifth accommodation space of the third cabinet 31.

[0074] The nitrate nitrogen online detector includes: a nitrate nitrogen detection electrode and a nitrate nitrogen online detector controller 46. The nitrate nitrogen detection electrode and the nitrate nitrogen online detector controller 46, the nitrate nitrogen online detector controller 46 and the third automatic control system are all electrically connected. The nitrate nitrogen detection electrode is arranged at the inlet and outlet of the wastewater treatment reaction tank to monitor the nitrate nitrogen content of the wastewater at the inlet and outlet. The nitrate nitrogen online detector controller 46 is installed in the fifth accommodating space of the third cabinet 31.

[0075] Specific operation steps: set the COD value and nitrate nitrogen content, the COD detection electrode and the nitrate nitrogen detection electrode respectively transmit the real-time detected data to the third automatic control system, which is accurately displayed through the touch screen 6 on the third cabinet 42. At the same time, the dosing operation program in the PLC controller 5 combines the set COD value, the set nitrate nitrogen content, the measured COD value, the measured nitrate nitrogen content and the water inlet flow rate for calculation, and converts the calculation result into an execution signal output to the frequency converter 7 corresponding to the carbon source dosing metering pump 44. The frequency converter 7 controls the operating state of the carbon source dosing metering pump 44 to add a quantitative amount of carbon source to the wastewater in the wastewater treatment reaction tank.

[0076] In some embodiments, Figure 3 As shown, a heat dissipation mesh plate 10 is provided on the cabinet corresponding to the automatic control system in each drug dosing device to help discharge the hot air inside the cabinet and reduce the working temperature of the automatic control system.

[0077] In some embodiments, the above-mentioned medicine storage device includes: a plurality of high and low liquid level sensors, a plurality of medicine storage containers and a plurality of medicine output pipelines, and the medicine storage containers are connected to the medicine output pipelines in a one-to-one correspondence.

[0078] At least one high and low liquid level sensor is provided in each medicine storage container, and the high and low liquid level sensor is used to detect the medicine liquid level in the medicine storage container. Preferably, the high and low liquid level sensor is electrically connected to the automatic control system in the corresponding medicine dosing device, for example, the high and low liquid level sensor in the medicine storage container containing the acid regulator and the high and low liquid level sensor in the medicine storage container containing the alkali regulator are both electrically connected to the first automatic control system, and the liquid level data is transmitted to the first automatic control system and displayed on the touch screen 5.

[0079] The plurality of reagent storage containers are used to respectively contain pH adjusting reagent, PAC reagent, PAM reagent and carbon source.

[0080] The agent inlet of the pH adjusting agent dosing device 2, the agent inlet of the PAC / PAM agent dosing device 3, and the agent inlet of the carbon source agent dosing device 4 are respectively connected to the agent storage containers containing the corresponding agents through agent output pipelines.

[0081] Combined with the specific structures of the pH adjusting agent dosing device 2, the PAC / PAM agent dosing device 3 and the carbon source agent dosing device 4, the following are described in detail:

[0082] Corresponding to the pH adjusting agent dosing device 2: at least two agent storage containers are set, respectively containing an acid regulator and an alkali regulator. The agent storage container containing the acid regulator is connected to the input end of the acid dosing metering pump 24 in the first cabinet 21 through a agent output pipeline; the agent storage container containing the alkali regulator is connected to the input end of the alkali dosing metering pump 25 in the first cabinet 21 through another agent output pipeline.

[0083] Corresponding to the PAC / PAM agent dosing device 3: at least two agent storage containers are set, which are respectively filled with PAC regulator and PAM regulator. The agent storage container filled with PAC regulator is connected to the input end of the PAC dosing metering pump 34 in the second cabinet 31 through a agent output pipeline; the agent storage container filled with PAM regulator is connected to the input end of the PAM dosing metering pump 35 in the second cabinet 31 through another agent output pipeline.

[0084] Corresponding to the carbon source agent dosing device 4: at least one agent storage container is set to hold the carbon source, and the agent storage container holding the carbon source is connected to the input end of the carbon source dosing metering pump 44 in the third cabinet 41 through a agent output pipeline. When two carbon source dosing metering pumps 44 are set, they can share the same agent storage container holding the carbon source, or another agent storage container can be added.

[0085] It should be noted that the pH adjusting agent dosing device 2, the PAC / PAM agent dosing device 3 and the carbon source agent dosing device 4 are independent of each other. When two of the agent dosing devices are used in combination, only the agent storage containers corresponding to the number of agents need to be set. For example, when the pH adjusting agent dosing device 2 and the PAC / PAM agent dosing device 3 are used in combination, 4 agent storage containers are set to respectively contain the acid regulator, the alkali regulator, the PAC regulator and the PAM regulator. Only when the three agent dosing devices are used in combination, 5 agent storage containers need to be set to respectively contain the acid regulator, the alkali regulator, the PAC regulator, the PAM regulator and the carbon source.

[0086] In some embodiments, the drug storage device further comprises: an agitator, a vent pipe and a vent valve.

[0087] The stirrer is arranged in the medicine storage container and can stir the medicine in the medicine storage container evenly.

[0088] The vent valve is arranged on the vent pipe, and the vent pipe is connected to the bottom of the medicine storage container and is used for discharging the medicine in the medicine storage container.

[0089] In some embodiments, the pH adjusting agent dosing device 1, the PAC / PAM agent dosing device 2, and the carbon source agent dosing device 3 are all provided with sound and light alarm devices. Preferably, the sound and light alarm devices of each agent dosing device are respectively electrically connected to the corresponding automatic control system, that is, the sound and light alarm device of the pH adjusting agent dosing device 1 is electrically connected to the first automatic control system, the sound and light alarm device of the PAC / PAM agent dosing device 2 is electrically connected to the second automatic control system, and the sound and light alarm device of the carbon source agent dosing device 3 is electrically connected to the third automatic control system. The sound and light alarm device can emit sound and flash when the device fails or the agent is insufficient to remind the operator to take action, thereby ensuring the safety and stability of the dosing process.

[0090] In some embodiments, mesh plates 8 are provided on the side walls of the pH adjusting agent dosing device 2, the side walls of the PAC / PAM agent dosing device 3, and the side walls of the carbon source agent dosing device 4. The mesh plates 8 are used for outflow of leaked liquid in the device and ventilation.

[0091] Preferably, according to the specific structures of the pH adjusting agent dosing device 2, the PAC / PAM agent dosing device 3 and the carbon source agent dosing device 4, a grid plate 8 is provided on the side wall of the first cabinet 21 corresponding to the second accommodating space, on the side wall of the second cabinet 31 corresponding to the fourth accommodating space, and on the side wall of the third cabinet 41 corresponding to the sixth accommodating space.

[0092] In some embodiments, a lifting ring or a forklift slot is provided on the skid-mounted base 1. The lifting ring is used for lifting and moving the equipment. A forklift slot may also be provided on the skid-mounted base 1. The forklift arm of an external forklift can be inserted into the forklift slot to move the equipment.

[0093] In some embodiments, the skid-mounted base 1 is provided with universal wheels for facilitating movement of the device, and the universal wheels are provided with a brake mechanism.

[0094] In some embodiments, the skid-mounted base 1 is made of carbon steel or stainless steel.

[0095] In some embodiments, Figure 4As shown, the above-mentioned wastewater treatment reaction tank is divided into a pretreatment reaction tank, a biochemical treatment reaction tank (including an anaerobic tank, an anoxic tank and an aerobic tank) and a deep treatment reaction tank according to the order of the wastewater treatment process. The combined application of the pH adjustment agent dosing device 2, the PAC / PAM agent dosing device 3, and the carbon source agent dosing device 4 needs to be combined according to the requirements of the wastewater treatment process.

[0096] The pH adjusting agent dosing device 2 can be used to calculate the optimal dosage of the pH adjusting agent according to the wastewater quality and treatment requirements, and automatically add the pH adjusting agent to the pretreatment reaction tank.

[0097] The PAC / PAM agent dosing device 3 can be used to calculate the optimal dosage of PAC agent and / or PAM agent according to the wastewater quality and treatment requirements, and automatically add PAC agent and / or PAM agent to the pretreatment reaction tank or the deep treatment reaction tank respectively.

[0098] The carbon source agent dosing device 4 can be used to calculate the optimal dosage of the carbon source according to the wastewater quality and treatment requirements, and automatically add the carbon source to the anoxic tanks.

[0099] It is also possible that three reagent dosing devices are freely combined to dosing reagents to the same reaction pool. The combined intelligent dosing system provided by the utility model is described below in combination with the requirements of a specific wastewater treatment process:

[0100] Example 2

[0101] like Figure 4 As shown, the pH adjusting agent dosing device 2 provided by the utility model is applied to a pretreatment unit of a certain industrial water treatment - the Fenton process front end (i.e. Figure 4 The pH value of the wastewater to be treated is 7-9. Acid regulators such as sulfuric acid or hydrochloric acid can be added to accurately adjust the pH value of the wastewater to the acidic environment required by the Fenton process, that is, the pH value is 3-4. When the pH value of the wastewater is too low, it is not conducive to the biochemical treatment at the back end ( Figure 4 When using the biochemical treatment reaction tank shown in the figure), an alkali regulator such as sodium hydroxide can be added to adjust the pH value from 3-4 to 6-9 to facilitate subsequent biochemical treatment.

[0102] Example 3

[0103] like Figure 4As shown, the oily wastewater of a petrochemical enterprise is pretreated by flotation treatment process, and the pH adjusting agent dosing device 2 and the PAC / PAM agent dosing device 3 are used in combination. The composition of the wastewater is relatively complex, and the pH value of the raw water is unstable. The coagulation and sedimentation effect according to the pH value of the raw water is not ideal. Therefore, the pH value needs to be adjusted to be alkaline, and then coagulation and flotation are carried out. The pH adjusting agent dosing device 2 and the PAC / PAM agent dosing device 3 are applied here, which not only saves the amount of agent added, but also improves the effect of coagulation and flotation, reduces the cost of agents, and makes the effluent stable and meet the standards.

[0104] Example 4

[0105] like Figure 4 As shown, the PAC / PAM agent dosing device 3 provided by the utility model can be used for coagulation flotation, as well as coagulation sedimentation in a pretreatment reaction tank or coagulation sedimentation in a deep treatment reaction tank. Coagulation flotation is used for oil and suspended matter removal, and coagulation sedimentation is used for COD degradation and suspended matter removal. It can achieve precise dosing and dynamic adjustment. When the water quality and water quantity fluctuate greatly, the effluent can be stably discharged in compliance with the standards.

[0106] Example 5

[0107] like Figure 4 As shown, the carbon source agent dosing device 3 provided by the utility model is mainly used in the anoxic tank of the biochemical treatment unit to remove the total nitrogen index in the water. In a chemical wastewater treatment plant, the available carbon source is insufficient, the total nitrogen is high, the water quality is unstable, and the total nitrogen needs to be reduced from 50-100 mg / L to 15 mg / L. By using the carbon source agent dosing device 3 to automatically add carbon source according to the COD value and nitrate nitrogen content of the wastewater, the agent cost can be reduced by 20%, saving the agent cost.

[0108] Example 6

[0109] like Figure 4 As shown, the pH adjustment agent dosing device 2, the PAC / PAM agent dosing device 3 and the carbon source agent dosing device 4 are used together, mainly used in a complete set of wastewater treatment process, involving pretreatment units, biochemical treatment units and deep treatment units. A chemical enterprise, the main process of wastewater treatment is flotation + Fenton + AAO + coagulation sedimentation + filtration. By using this combined intelligent dosing system, it not only saves the cost of agents, but also reduces the labor cost, and at the same time enables the sewage treatment to meet the standards stably.

[0110] The ideal embodiment of the utility model is an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the scope of the technical idea of ​​the utility model.

[0111] The technical scope of this utility model is not limited to the contents in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A combined intelligent dosing system for treating energy and chemical wastewater, characterized in that: include: Skid-mounted base, pH adjustment agent dosing device, PAC / PAM agent dosing device, carbon source agent dosing device and agent storage device; The pH adjusting agent dosing device is fixed on the skid-mounted base, and the pH adjusting agent dosing device is provided with a first automatic control system, which is used to calculate the pH adjusting agent dosage according to the wastewater quality and treatment requirements, and control the pH adjusting agent dosing device to automatically dosing the pH adjusting agent into the wastewater treatment reaction tank; The PAC / PAM agent dosing device is fixed on the skid-mounted base, and the PAC / PAM agent dosing device is provided with a second automatic control system, and the second automatic control system is used to calculate the PAC agent dosage and / or PAM agent dosage according to the wastewater quality and the treatment requirements, and control the PAC / PAM agent dosing device to automatically add PAC agent and / or PAM agent to the wastewater treatment reaction tank; The carbon source agent dosing device is fixed on the skid-mounted base, and the carbon source agent dosing device is provided with a third automatic control system, and the third automatic control system is used to calculate the carbon source dosage according to the wastewater quality and treatment requirements, and control the carbon source agent dosing device to automatically add the carbon source to the wastewater treatment reaction tank; The pH adjusting agent dosing device, the PAC / PAM agent dosing device and the carbon source agent dosing device are independent of each other and can be flexibly combined according to the needs of wastewater treatment; The reagent storage device is used to input pH regulating reagent, PAC / PAM reagent and carbon source into the pH regulating reagent dosing device, the PAC / PAM reagent dosing device and the carbon source reagent dosing device respectively.

2. The combined intelligent dosing system according to claim 1 is characterized in that: The pH adjusting agent dosing device comprises: a pH adjusting agent dosing metering pump group and a first pH online detector; The first pH online detector is used to detect the pH value of the wastewater in the wastewater treatment reaction tank; The pH regulating and dosing metering pump group and the pH online detector are electrically connected to the first automatic control system respectively, and the first automatic control system controls the operating state of the pH regulating and dosing metering pump group according to the wastewater pH value detected by the first pH online detector.

3. The combined intelligent dosing system according to claim 1 is characterized in that: The PAC / PAM agent dosing device comprises: a PAC / PAM dosing metering pump group, a second pH online detector and a turbidity online detector; The second pH online detector is used to detect the pH value of the wastewater in the wastewater treatment reaction tank; The turbidity online detector is used to detect the turbidity of the wastewater in the wastewater treatment reaction tank; The PAC / PAM dosing metering pump group, the second pH online detector and the turbidity online detector are electrically connected to the second automatic control system respectively, and the second automatic control system controls the operating state of the PAC / PAM dosing metering pump group according to the wastewater pH value detected by the second pH online detector, the wastewater turbidity detected by the turbidity online detector and the wastewater inlet flow rate.

4. The combined intelligent dosing system according to claim 1, characterized in that: The carbon source agent dosing device comprises: a carbon source dosing metering pump group, a COD online detector and a nitrate nitrogen online detector; The COD online detector is used to detect the COD value of the wastewater in the wastewater treatment reaction tank; The nitrate nitrogen online detector is used to detect the nitrate nitrogen content of the wastewater in the wastewater treatment reaction tank; The carbon source dosing metering pump group, the COD online detector and the nitrate nitrogen online detector are respectively electrically connected to the third automatic control system, and the third automatic control system controls the operating state of the carbon source dosing metering pump group according to the wastewater COD value, the wastewater nitrate nitrogen content and the wastewater inlet flow rate.

5. The combined intelligent dosing system according to claim 4 is characterized in that: The pH adjusting agent dosing device comprises a pH adjusting dosing metering pump group, and the pH adjusting dosing metering pump group comprises an acid dosing metering pump and an alkali dosing metering pump; The pH adjusting agent dosing device further comprises: a first cabinet, a first agent inlet and a first agent outlet are provided on the first cabinet, an input end of the acid dosing metering pump and an input end of the alkali dosing metering pump are respectively connected to the first agent inlet through pipelines, and an output end of the acid dosing metering pump and an output end of the alkali dosing metering pump are respectively connected to the first agent outlet through pipelines; and / or, The PAC / PAM agent dosing device comprises a PAC / PAM dosing metering pump group, and the PAC / PAM dosing metering pump group comprises a PAC dosing metering pump and a PAM dosing metering pump; The PAC / PAM drug dosing device further comprises a second cabinet, on which a second drug inlet and a second drug outlet are provided, the input end of the PAC drug dosing metering pump and the input end of the PAM drug dosing metering pump are respectively connected to the second drug inlet through pipelines, and the output end of the PAC drug dosing metering pump and the output end of the PAM drug dosing metering pump are respectively connected to the second drug outlet through pipelines; and / or, The carbon source agent dosing device also includes: a third cabinet, on which a third agent inlet and a third agent outlet are provided, the input end of the carbon source dosing metering pump group is connected to the third agent inlet through a pipeline, and the output end of the carbon source dosing metering pump group is connected to the third agent outlet through a pipeline.

6. The combined intelligent dosing system according to claim 1, characterized in that: The pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device all adopt a cabinet structure. The cabinet of the pH adjusting agent dosing device is divided into a first accommodating space and a second accommodating space. The pH adjusting agent dosing device is provided with a pH adjusting agent dosing metering pump group, which is arranged in the second accommodating space, and the first automatic control system is arranged in the first accommodating space. The interior of the cabinet of the PAC / PAM agent dosing device is divided into a third accommodating space and a fourth accommodating space. The PAC / PAM agent dosing device is provided with a PAC / PAM dosing metering pump group, which is arranged in the fourth accommodating space, and the second automatic control system is arranged in the third accommodating space. The interior of the cabinet of the carbon source agent dosing device is divided into a fifth accommodating space and a sixth accommodating space. The carbon source agent dosing device is provided with a carbon source dosing metering pump group, which is arranged in the sixth accommodating space, and the third automatic control system is arranged in the fifth accommodating space.

7. The combined intelligent dosing system according to claim 6, characterized in that: The first automatic control system, the second automatic control system and the third automatic control system all include: a PLC controller, a touch screen and a frequency converter, The touch screen is electrically connected to the PLC controller, and is used to receive control signals transmitted by the PLC controller and display control parameters in real time, and to allow operators to input control parameters; The frequency converter is electrically connected to the dosing metering pump group and the PLC controller respectively, and is used to adjust the operating state of the dosing metering pump group according to the control instructions of the PLC controller.

8. The combined intelligent dosing system according to claim 1, characterized in that: The medicine storage device comprises: a plurality of high and low liquid level sensors, a plurality of medicine storage containers, a plurality of medicine output pipelines, a plurality of stirrers, a vent pipe and a vent valve; The high and low liquid level sensors are arranged in the medicine storage container, and the high and low liquid level sensors are used to detect the medicine liquid level in the medicine storage container; The medicine output pipeline is connected to the medicine storage container in a one-to-one correspondence; The plurality of reagent storage containers are used to respectively contain a pH adjusting reagent, a PAC reagent, a PAM reagent and a carbon source; The agent inlet of the pH adjusting agent dosing device, the agent inlet of the PAC / PAM agent dosing device, and the agent inlet of the carbon source agent dosing device are respectively connected to the agent storage container containing the corresponding agent through the agent output pipeline; The stirrer is disposed in the medicine storage container, and is used to stir the medicine stored in the medicine storage container evenly; The vent valve is arranged on the vent pipe, and the vent pipe is connected to the bottom of the medicine storage container.

9. The combined intelligent dosing system according to claim 1, characterized in that: The pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device are all provided with: an audible and visual alarm device, which is used to emit sound and flash to remind the operator when the device fails or the agent is insufficient; and / or, The pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device are all provided with mesh plates, and the mesh plates are used for outflow and ventilation of leaked liquid in the device; and / or, The skid-mounted base is provided with a lifting ring or a forklift slot, wherein the lifting ring is used for lifting and moving the equipment, and the forklift slot is used for the forklift arm of an external forklift to extend into to move the equipment; and / or, The skid-mounted base is provided with universal wheels for facilitating movement of the device, and the universal wheels are provided with a brake mechanism; and / or, The skid-mounted base is provided with a plurality of mounting holes, and the plurality of mounting holes are used to respectively mount the pH adjusting agent dosing device, the PAC / PAM agent dosing device, and the carbon source agent dosing device; and / or, The skid-mounted base is made of carbon steel or stainless steel.

10. The combined intelligent dosing system according to claim 1, characterized in that: The wastewater treatment reaction tank comprises a pretreatment reaction tank, a biochemical treatment reaction tank and a deep treatment reaction tank in the order of wastewater treatment process, and the biochemical treatment reaction tank comprises an anaerobic tank, an anoxic tank and an aerobic tank; The pH adjusting agent dosing device can be used to calculate the optimal dosage of the pH adjusting agent according to the wastewater quality and treatment requirements, and automatically add the pH adjusting agent to the pretreatment reaction tank; The PAC / PAM agent dosing device can be used to calculate the optimal dosage of PAC agent and / or PAM agent according to the wastewater quality and treatment requirements, and automatically add PAC agent and / or PAM agent to the pretreatment reaction tank and the deep treatment reaction tank respectively; The carbon source agent dosing device can be used to calculate the optimal dosage of the carbon source according to the wastewater quality and treatment requirements, and automatically add the carbon source to the anoxic tanks respectively.

Images