A sewage treatment regulation method and system based on an artificial water body substrate and related equipment

Abstract

The application relates to the technical field of sewage treatment, in particular to a sewage treatment regulation method and system based on an artificial water body substrate and related equipment; the method comprises the following steps: in the process of monitoring the artificial water body substrate to treat the sewage in a polluted water area, if it is determined according to monitoring data transmitted by a plurality of sensors that the current drainage mode of a drainage device needs to be regulated, a regulation strategy is determined; wherein the type of the drainage mode of the drainage device comprises a pulse mode and a steady speed mode, the pulse mode is used for periodically changing the flow rate of the top of the artificial water body substrate, and the steady speed mode is used for keeping the flow rate of the top of the artificial water body substrate stable; the current drainage mode of the drainage device is regulated according to the regulation strategy; the application can solve the technical problem that the sewage treatment quality of the existing sewage treatment method is not high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and in particular to a sewage treatment regulation method and system based on an artificial water body substrate and related equipment. BACKGROUND

[0002] In the field of sewage treatment, a sewage extraction treatment method is usually adopted to treat sewage, that is, sewage is extracted from a polluted water area and then discharged into a sewage treatment device for treatment.

[0003] In the prior art, although sewage extraction treatment methods such as activated sludge method, biological filter method and constructed wetland can achieve sewage treatment, in actual operation, the activated sludge method usually needs to increase additional sewage treatment devices such as denitrification tank and phosphorus removal tank, which increases the complexity and land occupation area of sewage treatment; the biological filter method has low energy consumption, but the biological filter is prone to filler blockage during sewage treatment and has limited removal effect on suspended solids in the sewage; the constructed wetland has a large land occupation area and the treatment efficiency is greatly affected by seasons and climate, resulting in very unstable sewage treatment effect.

[0004] In summary, although the sewage extraction treatment method can achieve sewage treatment, it has the technical problem of low sewage treatment quality. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a sewage treatment regulation method and system based on an artificial water body substrate and related equipment to solve the technical problem of low sewage treatment quality in the prior art sewage treatment method.

[0006] In a first aspect, the present application provides a sewage treatment regulation method based on an artificial water body substrate, applied to a sewage treatment regulation system based on an artificial water body substrate, an artificial water body substrate is arranged on a natural substrate in a polluted water area, and the water level of the polluted water area is higher than the top of the artificial water body substrate; the system comprises a drainage device and a plurality of sensors arranged in the artificial water body substrate and the polluted water area, the drainage device is used to extract untreated sewage in the polluted water area that does not naturally flow through the top of the artificial water body substrate and discharge the extracted untreated sewage to the top of the artificial water body substrate; the method comprises:

[0007] During monitoring of sewage treatment of the untreated sewage in the polluted water area by the artificial water body substrate, if it is determined according to monitoring data transmitted by a plurality of sensors that the current drainage mode of the drainage device needs to be regulated, a regulation strategy is determined;

[0008] The type of the drainage mode of the drainage device includes a pulse mode and a steady mode, the pulse mode is used to periodically change the flow rate on the top of the artificial water body substrate, and the steady mode is used to keep the flow rate on the top of the artificial water body substrate stable.

[0009] The current drainage mode of the drainage device is regulated according to the regulation strategy.

[0010] In a second aspect, the present application provides a sewage treatment regulation system based on an artificial water body substrate, the artificial water body substrate is arranged on a natural substrate in a polluted water area, and the water level of the polluted water area is higher than the top of the artificial water body substrate; the system comprises a drainage device, a plurality of sensors arranged in the artificial water body substrate and the polluted water area, and a control device, the drainage device is used to extract untreated sewage in the polluted water area that does not naturally flow to the top of the artificial water body substrate and drain the extracted untreated sewage to the top of the artificial water body substrate.

[0011] The control device is used to determine a regulation strategy if it is determined according to the monitoring data transmitted by the plurality of sensors that the current drainage mode of the drainage device needs to be regulated during the monitoring of the sewage treatment of the artificial water body substrate on the untreated sewage in the polluted water area.

[0012] The type of the drainage mode of the drainage device includes a pulse mode and a steady mode, the pulse mode is used to periodically change the flow rate on the top of the artificial water body substrate, and the steady mode is used to keep the flow rate on the top of the artificial water body substrate stable.

[0013] The control device is used to regulate the current drainage mode of the drainage device according to the regulation strategy.

[0014] In a third aspect, the present application provides an electronic device, the electronic device comprises a processor and a memory, the memory is used to store an application program, and the processor is used to run or execute a software program stored in the memory, so that the electronic device realizes the sewage treatment regulation method based on an artificial water body substrate as described above.

[0015] In a fourth aspect, the present application provides a computer readable storage medium, the computer readable storage medium is used to store program codes executed by a processor, and the program codes are used to realize the sewage treatment regulation method based on an artificial water body substrate as described above.

[0016] In a fifth aspect, the present application provides a computer program product, which contains computer instructions, when the computer instructions are run on an electronic device, make the electronic device realize the sewage treatment regulation and control method based on artificial water body substrate as described above.

[0017] Advantages:

[0018] The present application provides a sewage treatment regulation and control method based on artificial water body substrate, first, setting artificial water body substrate in natural substrate in polluted water area, then acquiring monitoring data through sensor in sewage treatment regulation and control system, then judging whether it is necessary to regulate and control sewage treatment process of artificial water body substrate, i.e. current drainage mode of drainage equipment, according to monitoring data, if it is considered necessary to regulate and control current drainage mode of drainage equipment, sewage treatment regulation and control system determines regulation and control strategy and implements regulation and control according to regulation and control strategy, since the present application has the process of regulating and controlling sewage treatment process, the present application can guarantee sewage treatment quality of artificial water body substrate. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application, the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation to the scope, for those skilled in the art, without making creative labor, other related drawings can also be obtained according to these drawings.

[0020] Figure 1 The structural schematic diagram of artificial water body substrate provided for the embodiments of the present application;

[0021] Figure 2 The flow schematic diagram of sewage treatment regulation and control method based on artificial water body substrate provided for the embodiments of the present application;

[0022] Figure 3 The periodic change schematic diagram of flow velocity of top of artificial water body substrate under pulse mode provided for the embodiments of the present application;

[0023] Figure 4 The structural schematic diagram of sewage treatment regulation and control system based on artificial water body substrate provided for the embodiments of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the present application will be described clearly and completely below combined with the drawings, obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative labor, belong to the scope protected by the present application.

[0025] Firstly, the application provides a sewage treatment regulation method based on an artificial water body substrate, which is applied to a sewage treatment regulation system based on an artificial water body substrate. The artificial water body substrate is arranged on a natural substrate in a polluted water area, and the water level of the polluted water area is higher than the top of the artificial water body substrate. The system comprises a drainage device and a plurality of sensors arranged in the artificial water body substrate and the polluted water area. The drainage device is used to extract untreated sewage in the polluted water area that does not naturally flow through the top of the artificial water body substrate and discharge the extracted untreated sewage to the top of the artificial water body substrate. Figure 1 As shown in the figure, Figure 1 The flowchart of the sewage treatment regulation method based on the artificial water body substrate provided by the embodiment of the application is shown. The method comprises S100-S200, and the details are shown as follows:

[0026] S100: In the process of monitoring the sewage treatment of the artificial water body substrate on the untreated sewage in the polluted water area, if it is determined according to the monitoring data transmitted by the plurality of sensors that the current drainage mode of the drainage device needs to be regulated, a regulation strategy is determined.

[0027] The type of the drainage mode of the drainage device includes a pulse mode and a steady speed mode. The pulse is used to periodically change the flow rate of the top of the artificial water body substrate, and the pulse is used to keep the flow rate of the top of the artificial water body substrate stable.

[0028] Specifically, in the embodiment of the application, the "polluted water area" refers to a polluted water area, and the water flow in the polluted water area is untreated sewage; the "natural substrate of the polluted water area" refers to the water bottom of the polluted water area. If the polluted water area is a river, the natural substrate is a riverbed, and if the polluted water area is an ocean, the natural substrate is a seabed; the "artificial water body substrate" is an artificially constructed artificial substrate for placing on the natural substrate, as shown in the figure, Figure 2 As shown in the figure, Figure 2 The structure diagram of the artificial water body substrate provided by the embodiment of the application is shown. The artificial water body substrate in the embodiment of the application comprises a plurality of substrate layers, and the water level of the polluted water area is higher than the top of the artificial water body substrate. Different substrate layers have different composition materials, and different substrate layers are inoculated with different types of microorganisms. The plurality of substrate layers are based on the respective composition materials and the inoculated microorganisms to cooperatively treat the sewage in the polluted water area.

[0029] In actual operation, although the artificial water body substrate belongs to an artificially constructed sewage treatment structure, there are many factors affecting the sewage treatment in the polluted water area, such as the pollution degree of the untreated sewage in the polluted water area, the water temperature of the untreated sewage, etc. Therefore, the sewage treatment effect of the sewage treatment process based on the artificial water body substrate is usually unstable, and therefore the sewage treatment process of the artificial water body substrate needs to be regulated.

[0030] In actual operation, a protective fence is arranged around the artificial water body substrate to prevent the to-be-treated wastewater in the contaminated water area from directly contacting the side surface of the artificial water body substrate, so as to ensure that the to-be-treated wastewater contacts the artificial water body on the top side of the artificial water body substrate and is sequentially treated by the plurality of substrate layers in the artificial water body substrate.

[0031] In the embodiment of the present application, the wastewater treatment process of the artificial water body substrate is regulated by the wastewater treatment regulation system based on the artificial water body substrate. The system comprises: a drainage device and a plurality of sensors arranged in the artificial water body substrate and the contaminated water area. The drainage device is used to extract the to-be-treated wastewater in the contaminated water area that does not naturally flow through the top of the artificial water body substrate and discharge the extracted to-be-treated wastewater to the top of the artificial water body substrate. In the "to-be-treated wastewater that does not naturally flow through the top of the artificial water body substrate", "does not naturally flow through" means that the to-be-treated wastewater located on the side of the artificial water body substrate and / or other positions downstream of the artificial water body substrate will not flow through the top of the artificial water body substrate without external intervention.

[0032] In actual operation, the to-be-treated wastewater that does not naturally flow through the top of the artificial water body substrate is extracted by the drainage device, and then discharged to the top of the artificial water body substrate, which is used to directly adjust the flow rate of the top of the artificial water body substrate and indirectly dynamically disturb the microbial activity in the artificial water body substrate, so as to regulate the microbial activity in the artificial water body substrate, and finally realize the regulation of the wastewater treatment process of the artificial water body substrate.

[0033] In actual operation, the flow direction of the to-be-treated wastewater discharged to the top of the artificial water body substrate is inclined downward, that is, the to-be-treated wastewater discharged by the drainage device "rushes" to the top of the artificial water body substrate, which will cause "impact" on the top of the artificial water body substrate.

[0034] In the embodiment of the present application, the types of the drainage mode of the drainage device include pulse mode and steady speed mode. The pulse mode is used to make the flow rate of the top of the artificial water body substrate periodically change, and the steady speed mode is used to keep the flow rate of the top of the artificial water body substrate stable. Different drainage modes can realize different degrees of adjustment of the flow rate of the top of the artificial water body substrate, so as to further realize different adjustments of the microbial activity.

[0035] In one implementation, the artificial water body substrate comprises a first substrate layer, a second substrate layer and a third substrate layer stacked in turn from top to bottom. The first substrate layer is inoculated with aerobic microorganisms, the second substrate layer is inoculated with facultative anaerobic microorganisms, and the third substrate layer is inoculated with anaerobic microorganisms. The plurality of sensors comprises: one dissolved oxygen sensor, The plurality of dissolved oxygen sensors are arranged in a vertical arrangement direction and are sequentially arranged in the artificial water body substrate at a plurality of different depths S100 includes steps (1)-(3), which are described as follows:

[0036] Step (1): determining a target dissolved oxygen distribution curve according to the dissolved oxygen monitoring data transmitted by the plurality of dissolved oxygen sensors.

[0037] The target dissolved oxygen distribution curve indicates the dissolved oxygen data at the plurality of different depths in the artificial water body substrate in the form of a continuous curve. And is a positive integer, .

[0038] Specifically, in the embodiments of the present application, as shown in Table 1, Table 1 is a simple explanation of the composition materials, pore structure, hydraulic characteristics and microbial community of each substrate layer in the artificial water body substrate provided by the embodiments of the present application.

[0039] Table 1

[0040]

[0041] In the embodiments of the present application, the thickness of the first substrate layer can be set to 5-10 cm; the composition material of the first substrate layer is a composite material composed of nano-modified biochar and special functional microbial agents; the composite material has a high porosity and is dominated by micropores, wherein the porosity is 0.6-0.7, the pore size of the micropores is <2 nm, and the specific surface area is more than 800 m² / g, the large specific surface area provides a large number of attachment sites for aerobic microorganisms.

[0042] In actual application, the hydraulic characteristics of the first substrate layer are dominated by laminar flow with a Reynolds number Re <2000, which is conducive to the stable attachment and growth and development of the biofilm, thereby promoting the formation of a microbial community dominated by aerobic microorganisms, especially the enrichment of functional microbial groups such as nitrifying microorganisms, so that the thickness of the biofilm can reach 200 μm.

[0043] In the process of adjusting the flow rate of the top of the first substrate layer, i.e. the top of the artificial water body substrate, by the drainage equipment, if the current drainage mode of the drainage equipment is the pulse mode, the top of the first substrate layer will be subjected to periodic hydraulic scouring, and the dynamic disturbance caused by the hydraulic scouring can effectively remove the aged biofilm on the top of the first substrate layer to maintain the biological activity of the aerobic microorganisms in the first substrate layer; if the current drainage mode of the drainage equipment is the steady mode, the steady state of the laminar flow at the top of the first substrate layer is conducive to the stable growth and functional exertion of the surface biofilm at the top of the first substrate layer.​​

[0044] In the embodiment of the present application, the thickness of the second substrate layer can be set to 10-20 cm; the composition material of the second substrate layer is a new type of porous material such as zeolite, activated carbon, etc.; the porosity of the new type of porous material is 0.4-0.5 and it has both mesopores and macropores, wherein the pore size of the mesopores is 2-50 nm and the pore size of the macropores is >50 nm, and the structural characteristics of having both mesopores and macropores can both enhance the permeability of the water flow to the artificial water body substrate and improve the water retention of the artificial water body substrate.

[0045] In the embodiment of the present application, the hydraulic property of the second substrate layer is laminar flow and the Reynolds number Re <1000, which can effectively enhance the mass transfer effect of the dissolved oxygen and nutrients and provide a suitable living environment for the synergistic action of the microbial community of different functions, and under this condition, the microbial community such as denitrifying microorganisms dominated by facultative anaerobic microorganisms can thrive and grow, and finally form a diversified microbial community structure coexisting with biofilm and floc.

[0046] In the process of adjusting the flow rate at the top of the artificial water body substrate by the drainage equipment, if the current drainage mode of the drainage equipment is the pulse mode, the penetration of the middle layer water flow is significantly enhanced, which promotes the efficient exchange of dissolved oxygen and nutrients; if the current drainage mode of the drainage equipment is the steady speed mode, although the permeability of the water flow is reduced, the water retention is correspondingly enhanced, which provides a stable metabolic environment for the microorganisms and is conducive to the continuous and stable biochemical conversion process of the microorganisms.

[0047] In the embodiment of the present application, the thickness of the third substrate layer can be set to 10-15 cm; the composition material of the third substrate layer is modified zeolite and inert materials such as volcanic rock; the inert material has a relatively low porosity and is mainly dominated by macropores, wherein the porosity is 0.3-0.4 and the pore size of the macropores is >50 nm, and the structural characteristics can form a good hydraulic channel for reducing the overall hydraulic resistance.

[0048] In actual application, the hydraulic property of the third substrate layer is flow rate slowing down and close to static state, which is conducive to forming an anaerobic environment and provides suitable conditions for the growth of the microbial community dominated by anaerobic microorganisms; the third substrate layer is mainly enriched with anaerobic microorganisms represented by methanogenic microorganisms and phosphorus accumulating microorganisms, and the above-mentioned anaerobic microorganisms play a further role in removing pollutants in the artificial water body substrate and can further purify the wastewater to be treated.

[0049] During the process of adjusting the flow velocity at the top of the artificial water body substrate through the drainage equipment, if the current drainage mode of the drainage equipment is pulse mode, the water flow in the third substrate layer will remain relatively stable despite some disturbance. This change promotes the exchange of internal and external substances between the third substrate layer and the outside. If the current drainage mode of the drainage equipment is steady speed mode, the water flow in the third substrate layer will be almost still, creating more favorable conditions for the enrichment and stabilization of anaerobic microorganisms.

[0050] In this embodiment of the application, when the wastewater to be treated enters the artificial water body substrate from the top of the first substrate layer, it comes into contact with the natural substrate of the polluted water body after being treated by the first substrate layer, the second substrate layer and the third substrate layer in sequence, and then exits the artificial water body substrate after passing through the third substrate layer, the second substrate layer and the first substrate layer.

[0051] In this embodiment of the application, the plurality of sensors include: One dissolved oxygen sensor, The dissolved oxygen sensors are arranged vertically and sequentially in the artificial water body substrate. Dissolved oxygen data were collected at different depths within the artificial water body substrate.

[0052] After collecting After analyzing the dissolved oxygen monitoring data at different depth locations, based on... Dissolved oxygen monitoring data are used to determine the target dissolved oxygen distribution curve, which can display the dissolved oxygen distribution in the artificial water body substrate. Dissolved oxygen data at different depths were collected to determine the dissolved oxygen levels at different depths within the artificial water body substrate.

[0053] In one implementation, step (1) includes steps (1.1) to (1.2), as detailed below:

[0054] Step (1.1): According to The target dissolved oxygen sensor, located at the top of the first substrate layer, transmits target dissolved oxygen monitoring data. Through a dissolved oxygen content prediction formula, the predicted dissolved oxygen distribution curve of the artificial water body substrate is determined.

[0055] The predicted dissolved oxygen distribution curve is presented as a continuous curve, showing the distribution of dissolved oxygen in the artificial water body substrate. Predicted dissolved oxygen data at different depths; the formula for predicting dissolved oxygen content is shown below:

[0056] ;

[0057] In the formula, This represents the numerical value of the target dissolved oxygen monitoring data; represents the predicted dissolved oxygen data at the position with a distance of from the target dissolved oxygen sensor in the artificial water body substrate; represents a preset oxygen transfer coefficient, with a unit of mg / (L·cm); represents a preset gradient attenuation coefficient, with a unit of cm -1 ; represents a preset depth attenuation compensation coefficient, with a unit of mg / (L·cm³); represents a temperature correction factor when the water body temperature is . .

[0058] Specifically, in the embodiments of the present application, the target dissolved oxygen monitoring data transmitted by the target dissolved oxygen sensor arranged at the top of the first substrate layer in the dissolved oxygen sensor is used to calculate the dissolved oxygen data at multiple positions with different depths in the artificial water body substrate according to the dissolved oxygen content prediction formula, and then a predicted dissolved oxygen distribution curve is fitted according to the above dissolved oxygen data.

[0059] In actual operation, , and are determined by fitting experimental data; wherein the value of may be set to 0.06-0.08 mg / (L·cm), the value of may be set to 0.15-0.18 cm -1 , and the value of may be set to 0.0003-0.0004 mg / (L·cm³); wherein the preferred value of may be 0.16, may be 0.00035, and the preferred value of may be 1.40 at a temperature of 25°C.

[0060] When the pulse peak flow rate is , the penetration depth of dissolved oxygen is the largest at this time, which can effectively enhance the activity of aerobic microorganisms; when the pulse valley flow rate is , the penetration depth of dissolved oxygen is reduced, which is beneficial to the performance of anaerobic microorganisms. Within the pulse cycle of the pulse mode, may present periodic fluctuations with the change of flow rate; represents a reference speed, which is the basis for adjusting the water speed at the top of the artificial water body substrate; The periodic change formula of

[0061] ;

[0062] In the formula, express Moment In practice, It increases with increasing flow rate, when Enlarging it can enhance oxygen transfer; The periodic changes are used to form a dynamic dissolved oxygen gradient, which promotes the periodic activation of microorganisms with different functions.

[0063] In actual operation, if the current drainage mode of the drainage equipment is the steady-speed mode, it can be... The values ​​were set to 0.04~0.06 mg / (L·cm). The value was set to 0.18~0.20 cm. -1 and will The values ​​were set to 0.00025~0.00035 mg / (L·cm³).

[0064] Step (1.2): According to The remaining dissolved oxygen sensors after excluding the target dissolved oxygen sensor. The dissolved oxygen monitoring data transmitted by each dissolved oxygen sensor is used to correct the predicted dissolved oxygen distribution curve to obtain the target dissolved oxygen distribution curve.

[0065] Specifically, in the embodiments of this application, after determining the predicted dissolved oxygen distribution curve, the remaining... The dissolved oxygen monitoring data transmitted by each dissolved oxygen sensor is used to correct the predicted dissolved oxygen distribution curve to obtain the target dissolved oxygen distribution curve. The target dissolved oxygen distribution curve obtained after correction can accurately reflect the dissolved oxygen data at different depths in the artificial water body substrate.

[0066] Step (2): Based on the target dissolved oxygen distribution curve, determine the actual vertical distribution areas of aerobic microorganisms, facultative anaerobic microorganisms and anaerobic microorganisms in the artificial water body substrate.

[0067] Specifically, in the embodiments of this application, based on the dissolved oxygen data at different depths in the artificial water body substrate reflected by the target dissolved oxygen distribution curve, the actual vertical distribution areas of aerobic microorganisms, facultative anaerobic microorganisms, and anaerobic microorganisms in the artificial water body substrate can be determined respectively.

[0068] In actual operation, the region between the top of the artificial water body substrate and the position vertically downward from the top of the artificial water body substrate to the position where the value of the dissolved oxygen data is 2.0 mg / L is determined as the actual distribution region of the aerobic microorganism; the actual distribution region of the aerobic microorganism is mainly distributed in the first substrate layer, which is the core region for efficient metabolic activities of the aerobic microorganism such as nitrifying microorganism.

[0069] In actual operation, the region between the position where the value of the dissolved oxygen data is 2.0 mg / L and the position vertically downward from the position where the value of the dissolved oxygen data is 2.0 mg / L to the position where the value of the dissolved oxygen data is 0.2 mg / L is determined as the actual distribution region of the facultative anaerobic microorganism; the actual distribution region of the facultative anaerobic microorganism is the transition zone between the actual distribution region of the aerobic zone and the actual distribution region of the anaerobic zone, which is the main place for the key reactions of the facultative anaerobic microorganism such as denitrification.

[0070] In actual operation, the region between the position where the value of the dissolved oxygen data is 0.2 mg / L and the bottom of the third substrate layer vertically downward from the position where the value of the dissolved oxygen data is 0.2 mg / L is determined as the actual distribution region of the anaerobic microorganism; the actual distribution region of the anaerobic microorganism stably maintains an anaerobic environment, which is the habitat of the anaerobic microorganism such as denitrifying microorganism, phosphorus accumulating microorganism and methanogenic microorganism.

[0071] Step (3): If the actual distribution region of the aerobic microorganism, the facultative anaerobic microorganism and / or the anaerobic microorganism does not meet the target distribution range corresponding to each of them, it is determined that the current drainage mode of the drainage equipment needs to be regulated;

[0072] The target distribution range is the distribution range when the treatment performance of the artificial water body substrate for the wastewater to be treated meets the expectation.

[0073] Specifically, the core function of the distribution region of the aerobic microorganism is the removal of chemical oxygen demand (COD) and the nitrification of ammonia nitrogen , in which the nitrification process is a key link.

[0074] In actual operation, the region between the top of the artificial water body substrate and the region vertically extending from the top of the artificial water body substrate to a position at a depth of 4-10 cm is determined as the target distribution region of aerobic microorganisms, considering the overall performance optimization of the artificial water body substrate and the synergistic effect of different microbial communities. If the depth of the target distribution region of aerobic microorganisms is less than 4 cm, the effective volume for nitrification reaction will be insufficient, and ammonia nitrogen breakthrough may occur under high load of influent, thereby causing the total nitrogen in the effluent to exceed the standard. In addition, the too shallow aerobic zone also fails to fully utilize the first substrate layer enriched with aerobic microorganisms. If the depth of the target distribution region of aerobic microorganisms is greater than 10 cm, the distribution region of facultative anaerobic microorganisms and anaerobic microorganisms in the second substrate layer and the third substrate layer will be significantly compressed, resulting in blocked denitrification and accumulated nitrate nitrogen, and in addition, the total nitrogen may also exceed the standard. In addition, maintaining a deeper distribution region of aerobic microorganisms usually requires higher hydraulic intensity, thereby increasing the energy consumption of the wastewater treatment system.

[0075] In actual operation, the target distribution region of aerobic microorganisms is adjustable. In the pulse mode, the preferred depth of the target distribution region of aerobic microorganisms is 8-10 cm, which is used to cope with high load of influent and provide sufficient nitrification volume to prevent ammonia nitrogen breakthrough. In the steady speed mode, the preferred depth of the target distribution region of aerobic microorganisms is 4-6 cm, which is used to meet the basic nitrification demand while maximizing the distribution region of facultative anaerobic microorganisms and anaerobic microorganisms, thereby facilitating deep nitrogen removal and energy-saving operation.

[0076] The core functions of the distribution region of aerobic microorganisms include denitrification, deep chemical oxygen demand removal, and biological phosphorus removal, among which denitrification is the key link to achieve total nitrogen removal.

[0077] In actual operation, for the overall performance optimization of the artificial water body substrate, and the synergistic effect of different microbial communities, the region between the position vertically extending to 15 cm from the top of the artificial water body substrate and the position vertically extending to 25 cm from the top of the artificial water body substrate is determined as the target distribution region of the facultative anaerobic microorganisms; if the depth of the target distribution region of the facultative anaerobic microorganisms is less than 15 cm, it may lead to insufficient denitrification reaction time or unstable environment, thereby causing nitrate accumulation and significantly reducing the total nitrogen removal rate; at the same time, the too narrow target distribution region of the facultative anaerobic microorganisms also fails to fully utilize the space of the middle and lower substrates designed for facultative and anaerobic bacterial communities; if the depth of the target distribution region of the facultative anaerobic microorganisms is greater than 25 cm, it will excessively compress the distribution region of the upper aerobic microorganisms, leading to incomplete nitrification and hindering the denitrification process due to lack of sufficient nitrate “substrate”, which also reduces the total nitrogen removal rate; in addition, the too thick distribution region of the facultative anaerobic microorganisms may form a hydraulic dead zone, which is not conducive to uniform distribution and effective degradation of pollutants, and may even lead to sudden release of accumulated pollutants.

[0078] In actual operation, the target distribution region of the facultative anaerobic microorganisms is adjustable; in the pulse mode, in order to strengthen the aerobic function to cope with high load and preferentially ensure the removal of chemical oxygen demand and ammonia nitrogen, the preferred depth of the target distribution region of the facultative anaerobic microorganisms is 15-20 cm, allowing the sacrifice of part of the distribution region of the facultative anaerobic microorganisms; in the steady mode, due to the low hydraulic intensity, the target distribution region of the facultative anaerobic microorganisms naturally tends to expand, and the preferred depth of the target distribution region of the facultative anaerobic microorganisms is 20-25 cm, which is beneficial to deep purification and maximization of denitrification efficiency.

[0079] In an implementation manner, S100 further includes steps (4) and (5), details of which are shown as follows:

[0080] Step (4): if the current drainage mode is the pulse mode, according to the actual distribution region and the target distribution range of the aerobic microorganisms, the facultative anaerobic microorganisms and the anaerobic microorganisms in the artificial water body substrate, a numerical adjustment strategy for the first reference speed and / or the amplitude in the pulse flow rate formula is determined;

[0081] wherein, the pulse flow rate formula is as follows:

[0082] ;

[0083] wherein, represents the first target flow rate of the top of the artificial water body substrate at the time t when the current drainage mode is the pulse mode; ​This indicates the first reference velocity that is numerically adjustable in pulse mode. The reference velocity is the basis for adjusting the flow velocity at the top of the artificial water body base. This indicates the amplitude, which is numerically adjustable in pulse mode.

[0084] Specifically, in the embodiments of this application, in the pulse mode, the flow velocity at the top of the artificial water body substrate changes periodically according to the pulse flow velocity formula, such as... Figure 3 As shown, Figure 3 A schematic diagram illustrating the periodic change of flow velocity at the top of an artificial water body substrate under pulsed mode, provided in an embodiment of this application; wherein, the pulsed flow velocity formula is as follows:

[0085] ;

[0086] In the formula, In pulse mode, the top of the artificial water body substrate is in The primary target flow rate at any given moment; This indicates the first reference velocity that is numerically adjustable in pulse mode. The reference velocity is the basis for adjusting the flow velocity at the top of the artificial water body base. This indicates the numerically adjustable amplitude in pulse mode, representing the pulse intensity; Indicates the pulse period and characterizes the pulse frequency. In practical operation, it can be... Set to 4~6h, when Setting the time to 4-6 hours ensures periodic disturbances without being too frequent and affecting the stability of the artificial water body base, thereby enhancing the toughness of the artificial water body base.

[0087] In this embodiment of the application, a numerical adjustment strategy for the first reference velocity and / or amplitude in the pulse flow velocity formula is determined based on the actual distribution area and target distribution range of aerobic microorganisms, facultative anaerobic microorganisms and anaerobic microorganisms in the artificial water body substrate.

[0088] In practice, the numerical adjustment strategy for the first reference speed can be as follows: Set to 2.5~12.5cm / s, when Setting the speed to >2.5 cm / s avoids limiting substrate transfer. Setting the speed to <12.5 cm / s can prevent excessive biofilm shedding; therefore, when... Setting it to 2.5~12.5cm / s ensures sufficient mass transfer without causing excessive shear force.

[0089] In practice, the strategy for adjusting the amplitude can be as follows: Set to 20%, when Setting it to 20% ensures adequate perturbation while promoting biofilm renewal in the first basal layer, thus preventing excessive biofilm shedding due to excessively high flow rates.

[0090] Step (5): If the current drainage mode is the steady velocity mode, determine the numerical adjustment strategy for the second reference velocity and / or velocity coefficient in the steady velocity formula based on the actual distribution area and target distribution range of aerobic microorganisms, facultative anaerobic microorganisms and anaerobic microorganisms in the artificial water body substrate.

[0091] The formula for steady-state flow rate is as follows:

[0092] ;

[0093] In the formula, This indicates that in steady-speed mode, the top of the artificial water body base is at... The second target flow velocity at any given time; This indicates the second reference speed, which is numerically adjustable in steady-speed mode. This indicates the speed coefficient that can be adjusted in steady-speed mode.

[0094] Specifically, in the embodiments of this application, in the steady-velocity mode, the flow velocity at the top of the artificial water body substrate remains at a stable low velocity according to the steady-velocity flow velocity formula; wherein, the steady-velocity flow velocity formula is as follows:

[0095] ;

[0096] In the formula, This indicates that in steady-speed mode, the top of the artificial water body base is at... The second target flow velocity at any given time; This indicates the second reference speed, which is numerically adjustable in steady-speed mode. This indicates the speed coefficient that can be adjusted in steady-speed mode.

[0097] In practice, it can be Set to 0.3, when Setting it to 0.3 can significantly reduce the flow rate and hydraulic shear force, providing a more stable growth environment for microorganisms in the artificial water body substrate, promoting the maturation and stable function of the biofilm, and making it more conducive to the growth and metabolism of microorganisms.

[0098] In practice, if the actual distribution area of ​​microorganisms differs from the target distribution area, such as if the actual distribution area of ​​aerobic microorganisms is excessively extended (e.g., >10cm), meaning that oxygen penetration is too deep, the actual distribution area of ​​anaerobic microorganisms will be compressed or even eliminated, severely damaging the function of denitrification and other anaerobic microorganisms.

[0099] The root cause of the above phenomenon is that the hydraulic condition is too severe, resulting in too high oxygen transfer coefficient. The above situation often occurs when the artificial water body substrate is in pulse mode for a long time or the pulse intensity is set too high; to correct this state, the preferred control strategy is to switch the current drainage mode from pulse mode to steady mode to reduce the overall hydraulic intensity; if pulse mode needs to be maintained to meet specific needs, the pulse intensity should be reduced through parameter adjustment, including reducing the first reference flow rate or reducing the amplitude ; The above control strategy can effectively reduce the peak flow rate, thereby reducing the oxygen transfer coefficient, making the dissolved oxygen distribution curve steeper, and promoting the contraction of the actual distribution area of aerobic microorganisms, restoring the necessary anaerobic microorganism distribution area, and ensuring the denitrification function of the artificial water body substrate.

[0100] In actual operation, if the actual distribution area of microorganisms is different from the target distribution area, such as the depth of the actual distribution area of anaerobic microorganisms is excessively expanded (such as > 25 cm), which means that the depth of the actual distribution area of aerobic microorganisms is insufficient or even disappears, which will seriously inhibit the function of microorganisms such as nitrification and other aerobic microorganisms, and further affect the effective removal of chemical oxygen demand and ammonia nitrogen by the artificial water body substrate.

[0101] The root cause of the above phenomenon is that the water dynamic condition is too weak or the influent load suddenly increases, resulting in insufficient oxygen transfer coefficient, and oxygen cannot effectively penetrate into the second substrate layer and / or the third substrate layer. The above situation often occurs when the artificial water body substrate is in slow running mode for a long time or encounters sudden increase of influent load; to correct this state, the penetration of oxygen into the second substrate layer and / or the third substrate layer should be enhanced to expand the actual distribution area of aerobic microorganisms; among them, the preferred control strategy is to switch the current drainage mode from steady mode to pulse mode; the pulse mode can significantly improve the oxygen transfer coefficient through its high flow rate characteristics, thereby increasing the oxygen penetration depth and effectively expanding the actual distribution area of aerobic microorganisms; if the actual distribution area of aerobic microorganisms still does not reach the ideal state after mode switching, further adjustment of the parameters of the pulse mode is needed, such as increasing the first reference flow rate, increasing the amplitude or shortening the pulse period to increase the pulse intensity. The above control strategy aims to ensure that the first substrate layer maintains sufficient aerobic environment, while retaining necessary anaerobic environment in the second substrate layer and the third substrate layer, thereby realizing the synergistic effect of different functional microbial communities and restoring the overall treatment efficiency of the artificial water body substrate.

[0102] In one implementation, the plurality of sensors further include: a chemical oxygen demand sensor, the chemical oxygen demand sensor being arranged at the top of the artificial water body substrate; S100 further includes: steps (6) to (8), details as follows:

[0103] Step (6): Determine the actual chemical oxygen demand ratio based on the chemical oxygen demand monitoring data transmitted by the chemical oxygen demand sensor.

[0104] Specifically, in this embodiment of the application, a pulse activity index was constructed to quantify the activity state of the microbial system. ; Calculate the pulse activity index The actual chemical oxygen demand ratio needs to be determined first.

[0105] In this embodiment, the chemical oxygen demand (COD) sensor is installed on top of the artificial water body substrate. In actual operation, after COD monitoring data is collected, the ratio between the COD monitoring data and the preset COD threshold is determined to obtain the actual COD ratio. The COD ratio characterizes the COD removal capacity. The COD threshold can be determined according to actual needs, and this application does not impose any specific limitations on it.

[0106] Step (7): Determine the pulse activity index or steady-state activity index based on the actual chemical oxygen demand ratio, the target chemical oxygen demand ratio, and the actual flow velocity at the top of the artificial water body substrate.

[0107] Among them, the target chemical oxygen demand ratio is the ratio of chemical oxygen demand of aerobic microorganisms, facultative anaerobic microorganisms, and anaerobic microorganisms when the treatment performance of the wastewater meets expectations; the activity index characterizes the overall activity level of aerobic microorganisms, facultative anaerobic microorganisms, and anaerobic microorganisms in the artificial water body substrate; the pulse activity index indicates the activity index under pulse mode; and the steady-rate activity index indicates the activity index under steady-rate mode.

[0108] Specifically, in this embodiment, the formula for determining the pulse activity index or steady-state activity index based on the actual chemical oxygen demand ratio, the target chemical oxygen demand ratio, and the actual flow velocity at the top of the artificial water body substrate is as follows:

[0109] ;

[0110] In the formula, The pulse activity index or steady-state activity index is a dimensionless parameter used to characterize the overall activity level of microorganisms. It represents the actual chemical oxygen demand ratio and characterizes the removal efficiency of chemical oxygen demand; It represents the target chemical oxygen demand ratio, which characterizes the chemical oxygen demand ratio of the artificial water body substrate under ideal steady-state operating conditions, and is used to calibrate the pulse activity index; The actual flow velocity at the top of the artificial water body's base can be monitored in real time using a high-precision electromagnetic flowmeter; This represents the baseline flow rate (cm / s); in practical operation, if the calculated pulse activity index is used, the... The first reference speed; if the steady-state activity index is being calculated, the used... This is the second reference speed.

[0111] Step (8): If the pulse activity index or steady-state activity index does not meet expectations, it is determined that the current drainage mode of the drainage equipment needs to be adjusted.

[0112] Specifically, in actual operation, in pulse mode, if the pulse activity index is between 1.2 and 1.8, it indicates that the activity of the artificial water body substrate is relatively strong; in steady-speed mode, if the steady-speed activity index is between 0.6 and 0.9, it indicates that the activity of the artificial water body substrate is stable.

[0113] If the pulse activity index or steady-state activity index does not meet the above expectations, it indicates a mismatch between the hydraulic energy consumption and biological treatment efficiency of the artificial water body substrate.

[0114] In practical applications, if A low reading indicates that the invested hydraulic energy has failed to be converted into the expected treatment efficiency. There may be several reasons for this. First, there may be abnormalities in the condition of the biofilm itself. For example, an excessively thick or aged biofilm may hinder the mass transfer of pollutants, while excessive shedding may reduce the number of effective microorganisms in the artificial water body matrix. Second, there may be problems with the influent water quality, such as the presence of toxic substances that inhibit microbial activity, an imbalance in nutrient ratios, or extreme pH or temperature conditions that exceed the suitable range for microorganisms. In addition, hardware malfunctions should not be ignored. For example, inaccurate readings from the chemical oxygen demand sensor or electromagnetic flow meter, or malfunctions in the aeration equipment that affect the effective supply of dissolved oxygen.

[0115] In practical applications, if A reading that is too high may indicate measurement errors in the monitoring data or that the artificial water body substrate is in a transient state of instability. There could be several reasons for this; firstly, measurement errors may be present, such as a systematically low reading of chemical oxygen demand (COD) or a high reading of the electromagnetic flowmeter; secondly, the target COD ratio may be incorrect. The setting is unreasonable, that is, the target chemical oxygen demand ratio is not... The setting is too low; moreover, it is merely a brief burst of activity of microorganisms under specific environmental stimuli, and this phenomenon is often unsustainable and does not represent the long-term stability and efficiency of the artificial water body substrate.

[0116] In practice, if High, its control measures include: first, the basic data verification should be carried out, the online chemical oxygen demand sensor is calibrated by manual sampling and the accuracy of the data of the drainage equipment and electromagnetic flowmeter is carefully checked to exclude false alarm caused by equipment failure or measurement error; in addition, the water quality report of the sewage to be treated is analyzed, attention is paid to whether there are toxic substances, nutrient imbalance and other problems in the sewage to be treated, and it is monitored and ensured that the key environmental parameters such as pH and temperature required by the artificial water body substrate in operation are maintained within the appropriate range; in addition, the state of the artificial water body substrate is physically inspected, the growth of the surface biological membrane of the artificial water body substrate is observed, whether there is excessive clogging or peeling phenomenon is evaluated, and whether the substrate needs to be replaced locally or as a whole is judged in combination with the operation period.

[0117] In practical application, the updating strategy of the substrate in the artificial water body substrate is an important guarantee for maintaining the long-term activity and functional stability of the artificial water body substrate; based on the layered structure characteristics of the artificial water body substrate, the first substrate layer needs to be replaced every 6-12 months because it is directly exposed to water flow and is prone to clogging, and the specific replacement period can be flexibly adjusted according to the actual operation condition; the replacement period of the second substrate layer and the third substrate layer can be extended to 2-3 years because they are protected by the first substrate layer, and whether they need to be replaced or cleaned and regenerated can also be determined according to the periodic monitoring results, so that the whole artificial water body substrate can continuously maintain a good functional state.

[0118] In actual operation, if Low, its control measures include: the current drainage mode of the drainage equipment is adjusted to pulse mode based on the sewage treatment regulation system of the artificial water body substrate, and the first reference flow rate and amplitude are increased to enhance the hydraulic disturbance, which is used to promote the update and shedding of the aging biological membrane of the artificial water body substrate and activate the microbial activity; if the regulation strategy of the sewage treatment regulation system based on the artificial water body substrate fails to effectively improve , more in-depth artificial intervention measures may need to be considered, such as the overall replacement of the substrate layer in the artificial water body substrate, the addition of special bacteria agents, the adjustment of the ratio of nutrients, or backwashing, to restore and improve the biological treatment efficiency of the artificial water body substrate.

[0119] In one implementation, S100 further includes steps (9)-(11), as shown in the following details:

[0120] Step (9): acquiring the first flow rate and the second flow rate of the top of the artificial water body substrate.

[0121] Among them, the first flow rate is the actual flow rate with the maximum speed value collected in the pulse mode; the second flow rate is the actual flow rate collected in the steady mode.

[0122] Specifically, in the embodiments of this application, a dynamic balance coefficient was constructed to evaluate the dynamic balance capability of the artificial water body substrate. ; Calculate the dynamic equilibrium coefficient First, the first flow velocity and the second flow velocity need to be determined; the first flow velocity is the maximum actual flow velocity obtained by collecting velocity values ​​in pulse mode; the second flow velocity is the actual flow velocity obtained by collecting velocity values ​​in steady-state mode.

[0123] In this embodiment of the application, a dynamic equilibrium coefficient is constructed. The significance lies in quantifying the magnitude of changes in the hydraulic conditions of the artificial water body's foundation; when The larger the value, the higher the initial flow rate under pulse mode. The second flow rate relative to steady speed mode The greater the difference, the more significant the difference in hydraulic disturbance intensity and flow stability when the artificial water body base switches between the two modes. It may also indicate that the artificial water body base has a stronger dynamic adjustment capability, but it may also indicate that the operating conditions of the artificial water body base are more volatile.

[0124] when The smaller the value, the more... and The differences are relatively small, and the hydraulic conditions of the artificial water body base under different modes do not differ significantly, which may indicate that the artificial water body base operates more smoothly, but its dynamic adjustment capability is relatively weak. In the evaluation of the artificial water body base, The value can assess the effectiveness of control strategies, quantify the dynamic balance capacity of artificial water bodies, and assist in the optimized operation of artificial water bodies.

[0125] In practice, the dynamic balance coefficient is calculated every 30 minutes by continuously monitoring the first and second flow velocities to assess the overall operational status of the artificial water body base.

[0126] Step (10): Determine the dynamic balance coefficient based on the first flow velocity and the second flow velocity.

[0127] Among them, the dynamic balance coefficient characterizes the dynamic adjustment capability and balance level of the sewage treatment control system based on artificial water body substrate under the switching operation of pulse mode and steady speed mode.

[0128] Specifically, in this embodiment of the application, the formula for determining the dynamic balance coefficient based on the first flow velocity and the second flow velocity is as follows:

[0129] ;

[0130] in, Dynamic balance coefficient, a dimensionless parameter, is used to evaluate the dynamic adjustment ability and balance level of the artificial water body substrate under the switching operation of pulse mode and constant speed mode. First flow rate (cm / s), indicating the maximum instantaneous flow rate in pulse mode, reflecting the hydraulic disturbance intensity in pulse mode. Second flow rate (cm / s), indicating the constant flow rate in constant speed mode, reflecting the hydraulic stability in constant speed mode.

[0131] Step (11): If the dynamic balance coefficient does not meet the expectation, it is determined that the current drainage mode of the drainage equipment needs to be regulated.

[0132] Specifically, in the embodiments of the present application, if Within 3.2~4.0, it indicates that the artificial water body substrate has good dynamic balance performance.

[0133] In practical application, Reflects the degree of hydraulic disturbance experienced by the artificial water body substrate when switching modes; if Too large, such as >4.0, it indicates that the pulse impact of pulse mode is too intense, producing too high hydraulic shear force, which may cause excessive peeling of biofilm, massive loss of microorganisms, and decline of treatment capacity and damage to system resilience; if Too small, such as <3.2, it indicates that the hydraulic disturbance of pulse mode is not enough to effectively activate microorganisms, weakening the significance of mode switching.

[0134] In practical operation, if Too large, such as >4.0, the regulation target is to reduce it to the set optimization interval , and the regulation strategy to achieve this regulation target is to reduce the first flow rate of pulse mode or increase the second flow rate of constant speed mode. The above regulation strategy is automatically executed by the sewage treatment regulation system; among the two regulation methods of reducing the first flow rate and increasing the second flow rate, reducing the first flow rate is a more effective means, because the first flow rate is determined by the first reference flow rate and the amplitude together, so the adjustment of the first flow rate can be realized by adjusting the first reference flow rate and the amplitude .

[0135] In practical operation, when adjusting the first flow rate, priority is given to reducing the amplitude , which can directly reduce the peak flow rate and hydraulic shear force in pulse mode, thereby effectively reducing . In addition, this adjustment will not affect the flow rate of constant speed mode; as an alternative, if the amplitude the first reference flow rate can be considered to be reduced, although reducing the first reference flow rate will simultaneously reduce the absolute values of the first flow rate and the second flow rate, because the first flow rate will decrease by a relatively larger magnitude, the purpose of reducing the first flow rate can be achieved.

[0136] In actual operation, when adjusting the second flow rate, the speed coefficient of the steady mode is increased, for example, the speed coefficient is adjusted from 0.3 to 0.35 or 0.4, which will directly increase the second flow rate, thereby reducing ; in actual application, the adjustment of the second flow rate of the steady mode needs to be used carefully, because the adjustment may affect the "stable rest" and deep purification function that the steady mode aims to achieve, and is usually considered as the last solution.

[0137] Through the above adjustment, the artificial water body substrate can maintain dynamic adjustment ability while avoiding excessive hydraulic impact, ensuring long-term stability and efficient operation of the microbial community.

[0138] S200: According to the adjustment strategy, the current drainage mode of the drainage equipment is adjusted.

[0139] Specifically, after determining the adjustment strategy, the current drainage mode of the drainage equipment is adjusted according to the adjustment strategy to improve the sewage treatment effect of the artificial water body substrate.

[0140] Secondly, the application provides a sewage treatment adjustment system based on an artificial water body substrate, the artificial water body substrate is arranged on a natural substrate in a polluted water area, and the water level of the polluted water area is higher than the top of the artificial water body substrate; as Figure 4 shown, Figure 4 is a structural schematic diagram of the sewage treatment adjustment system based on the artificial water body substrate provided by the application, the system comprises: a drainage equipment 100, a plurality of sensors 200 arranged in the artificial water body substrate and the polluted water area, and a control equipment 300, the drainage equipment 100 is used to extract untreated sewage in the polluted water area that does not naturally flow through the top of the artificial water body substrate and discharge the extracted untreated sewage to the top of the artificial water body substrate;

[0141] The control equipment 300 is used to determine an adjustment strategy if it is determined that the current drainage mode of the drainage equipment needs to be adjusted according to the monitoring data transmitted by the plurality of sensors 200 during monitoring of the sewage treatment of the artificial water body substrate on the untreated sewage in the polluted water area.

[0142] The type of the drainage mode of the drainage equipment includes a pulse mode and a steady mode, the pulse mode is used to make the flow rate of the top of the artificial water body substrate change periodically, and the steady mode is used to keep the flow rate of the top of the artificial water body substrate stable.

[0143] The control device 300 is configured to regulate the current drainage mode of the drainage device according to the regulation strategy.

[0144] In an implementation, the artificial water body substrate comprises a first substrate layer, a second substrate layer and a third substrate layer stacked in sequence from top to bottom, the first substrate layer is inoculated with aerobic microorganisms, the second substrate layer is inoculated with facultative anaerobic microorganisms, and the third substrate layer is inoculated with anaerobic microorganisms; the plurality of sensors comprise: a dissolved oxygen sensor, a plurality of dissolved oxygen sensors are arranged in the artificial water body substrate in a vertical arrangement direction and are arranged at different depths in sequence; the control device 300 is further configured to determine a target dissolved oxygen distribution curve according to the dissolved oxygen monitoring data transmitted by the plurality of dissolved oxygen sensors;

[0145] The target dissolved oxygen distribution curve indicates the dissolved oxygen data at the different depths in the artificial water body substrate in the form of a continuous curve. and is a positive integer, ;

[0146] The control device 300 is further configured to determine actual distribution areas of the aerobic microorganisms, the facultative anaerobic microorganisms and the anaerobic microorganisms in the vertical direction in the artificial water body substrate according to the target dissolved oxygen distribution curve.

[0147] The control device 300 is further configured to determine that the current drainage mode of the drainage device needs to be regulated if the actual distribution areas of the aerobic microorganisms, the facultative anaerobic microorganisms and / or the anaerobic microorganisms do not conform to the target distribution ranges corresponding to the respective microorganisms.

[0148] The target distribution range is a distribution range of the microorganisms when the treatment performance of the artificial water body substrate on the wastewater to be treated meets the expectation.

[0149] In an implementation, the control device 300 is further configured to determine a predicted dissolved oxygen distribution curve of the artificial water body substrate according to the target dissolved oxygen monitoring data transmitted by a target dissolved oxygen sensor of the plurality of dissolved oxygen sensors arranged at the top of the first substrate layer by using a dissolved oxygen content prediction formula. The predicted dissolved oxygen distribution curve indicates predicted dissolved oxygen data at the different depths in the artificial water body substrate in the form of a continuous curve.

[0150] The dissolved oxygen content prediction formula is as follows:

[0151] ; ​​​

[0152] wherein, represents a value of target dissolved oxygen monitoring data; represents a value of predicted dissolved oxygen data at a position in the artificial water body substrate with a distance of from the target dissolved oxygen sensor; represents a preset oxygen transfer coefficient, in units of mg / (L·cm); represents a preset gradient attenuation coefficient, in units of cm - represents a preset depth attenuation compensation coefficient, in units of mg / (L·cm³); represents a temperature correction factor when the water body temperature is ; ;

[0153] The control device 300 is also configured to correct the predicted dissolved oxygen distribution curve to obtain a target dissolved oxygen distribution curve according to dissolved oxygen monitoring data transmitted by the remaining dissolved oxygen sensors except the target dissolved oxygen sensor.

[0154] In an implementation manner, the control device 300 is also configured to, if the current drainage mode is a pulse mode, determine a value adjustment strategy for the first reference speed and / or the amplitude in the pulse water speed calculation formula according to the actual distribution region and the target distribution range of the aerobic microorganism, the facultative anaerobic microorganism and the anaerobic microorganism in the artificial water body substrate respectively.

[0155] The pulse water speed calculation formula is as follows:

[0156] ;

[0157] wherein, represents a first target flow rate of the top of the artificial water body substrate at the time of under the pulse mode; represents a value-adjustable first reference speed under the pulse mode, the reference speed being a basis for adjusting the flow rate of the top of the artificial water body substrate; represents a value-adjustable amplitude under the pulse mode;

[0158] The control device 300 is also configured to, if the current drainage mode is a constant speed mode, determine a value adjustment strategy for the second reference speed and / or the speed coefficient in the constant speed flow rate formula according to the actual distribution region and the target distribution range of the aerobic microorganism, the facultative anaerobic microorganism and the anaerobic microorganism in the artificial water body substrate respectively.

[0159] The constant speed flow rate formula is as follows: ​​

[0160] ;

[0161] In the formula, represents the second target flow rate of the top of the artificial water body substrate at the time t in the steady speed mode; represents a second reference speed that is adjustable in value in the steady speed mode; represents a speed coefficient that is adjustable in value in the steady speed mode.

[0162] In an implementation manner, the plurality of sensors further include a chemical oxygen demand sensor, the chemical oxygen demand sensor being arranged at the top of the artificial water body substrate; and the control device 300 is further configured to determine an actual chemical oxygen demand ratio according to chemical oxygen demand monitoring data transmitted by the chemical oxygen demand sensor.

[0163] The control device 300 is further configured to determine a pulse activity index or a steady speed activity index according to the actual chemical oxygen demand ratio, a target chemical oxygen demand ratio, and an actual flow rate of the top of the artificial water body substrate.

[0164] The target chemical oxygen demand ratio is a chemical oxygen demand ratio when the treatment performance of the aerobic microorganisms, the facultative anaerobic microorganisms, and the anaerobic microorganisms on the wastewater to be treated meets an expectation; the activity index represents an overall activity level of the aerobic microorganisms, the facultative anaerobic microorganisms, and the anaerobic microorganisms in the artificial water body substrate; the pulse activity index indicates the activity index in the pulse mode; and the steady speed activity index indicates the activity index in the steady speed mode.

[0165] The control device 300 is further configured to determine that the current drainage mode of the drainage device needs to be regulated if the pulse activity index or the steady speed activity index does not meet the expectation.

[0166] In an implementation manner, the control device 300 is further configured to obtain a first flow rate and a second flow rate of the top of the artificial water body substrate.

[0167] The first flow rate is an actual flow rate with a maximum speed value obtained in the pulse mode; and the second flow rate is an actual flow rate obtained in the steady speed mode.

[0168] The control device 300 is further configured to determine a dynamic balance coefficient according to the first flow rate and the second flow rate.

[0169] The dynamic balance coefficient represents a dynamic adjustment capability and a balance level of the wastewater treatment regulation system based on the artificial water body substrate in switching operation between the pulse mode and the steady speed mode.

[0170] The control device 300 is further configured to determine that the current drainage mode of the drainage device needs to be regulated if the dynamic balance coefficient does not meet the expectation. ​

[0171] Thirdly, the present application further provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of S100-S200 provided by the above-mentioned embodiments.

[0172] Fourthly, the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is executable on the processor to execute the steps of S100-S200 of the above-mentioned embodiments.

[0173] Fifthly, the computer program product provided by the present application comprises a computer readable storage medium storing program codes, and the instructions included in the program codes are used to execute the method in the above-mentioned method embodiments. The specific implementation can refer to the steps of S100-S200 of the method embodiments, and will not be repeated here.

[0174] In the embodiments provided by the present application, it should be understood that the disclosed device and method can be implemented in other manners. The described device embodiments are only schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0175] In addition, the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e. can be located in one place, or can be distributed on a plurality of network units. In actual implementation, some or all of the units can be selected according to the actual needs to achieve the purposes of the embodiments of the present application.

[0176] In addition, each functional module in each embodiment of the present application can be integrated together to form a separate part, or each module can exist independently, or two or more modules can be integrated to form a separate part.

[0177] It should be noted that, if the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product in essence or in the form of a part or the technical solutions of the present application that make contributions to the prior art. The computer software product is stored in a storage medium, includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0178] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

[0179] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wastewater treatment control method based on an artificial water body substrate, characterized in that, A wastewater treatment and control system based on an artificial water body substrate is disclosed. The artificial water body substrate is situated on a natural substrate within a polluted water area. Wastewater to be treated comes into contact with the artificial water body at the top side of the substrate and is then sequentially treated through multiple substrate layers within the substrate. The water level in the polluted water area is higher than the top of the artificial water body substrate. The system includes: drainage equipment and multiple sensors disposed within the artificial water body substrate and the polluted water area. The drainage equipment is used to extract wastewater from the polluted water area that has not naturally flowed past the top of the artificial water body substrate and discharges the extracted wastewater towards the top of the artificial water body substrate. The artificial water body substrate comprises a first substrate layer, a second substrate layer, and a third substrate layer stacked sequentially from top to bottom. The first substrate layer is inoculated with aerobic microorganisms, the second substrate layer with facultative anaerobic microorganisms, and the third substrate layer with anaerobic microorganisms. The multiple sensors include: One dissolved oxygen sensor, The dissolved oxygen sensors are arranged vertically in sequence within the artificial water body substrate. At locations at different depths; the method includes: During the process of monitoring the artificial water body substrate to treat the sewage in the polluted water area, if it is determined from the monitoring data transmitted by multiple sensors that the current drainage mode of the drainage equipment needs to be adjusted, an adjustment strategy is determined. The drainage mode of the drainage device includes a pulse mode and a steady speed mode. The pulse mode is used to periodically change the flow velocity at the top of the artificial water body base, and the steady speed mode is used to keep the flow velocity at the top of the artificial water body base stable. If it is determined, based on monitoring data transmitted by multiple sensors, that the current drainage mode of the drainage equipment needs to be adjusted, this includes: based on... The dissolved oxygen monitoring data transmitted by the dissolved oxygen sensor is used to determine the target dissolved oxygen distribution curve; wherein, the target dissolved oxygen distribution curve indicates, in the form of a continuous curve, the dissolved oxygen content in the artificial water body substrate. Dissolved oxygen data at different depths; and It is a positive integer. Based on the target dissolved oxygen distribution curve, the actual vertical distribution areas of the aerobic microorganisms, facultative anaerobic microorganisms, and anaerobic microorganisms in the artificial water body substrate are determined respectively. If the actual distribution areas corresponding to the aerobic microorganisms, facultative anaerobic microorganisms, and / or anaerobic microorganisms do not conform to their respective target distribution ranges, it is determined that the current drainage mode of the drainage equipment needs to be adjusted. The target distribution range is the distribution range of microorganisms when the treatment performance of the artificial water body substrate on the wastewater to be treated meets expectations. Among them, the depth of the actual distribution area of ​​aerobic microorganisms is excessively expanded. The control strategy is to switch the current drainage mode from pulse mode to steady speed mode to reduce the overall hydraulic intensity. If it is necessary to maintain the pulse mode to meet specific needs, the pulse intensity should be reduced by adjusting the parameters. Specific measures include reducing the first reference speed or reducing the amplitude. The actual distribution area of ​​anaerobic microorganisms has been excessively expanded in depth; the control strategy is to switch the current drainage mode from steady-state mode to pulse mode; if the actual distribution area of ​​aerobic microorganisms still does not reach the ideal state after the mode switch, the parameters of the pulse mode need to be further adjusted to enhance the pulse intensity. The current drainage mode of the drainage equipment is adjusted according to the control strategy.

2. The method according to claim 1, characterized in that, According to The dissolved oxygen monitoring data transmitted by the dissolved oxygen sensor is used to determine the target dissolved oxygen distribution curve, including: according to The target dissolved oxygen sensor, which is located on top of the first substrate layer, transmits target dissolved oxygen monitoring data. The target dissolved oxygen content prediction formula is used to determine the predicted dissolved oxygen distribution curve of the artificial water body substrate. The predicted dissolved oxygen distribution curve is presented as a continuous curve, showing the distribution of dissolved oxygen in the artificial water body substrate. Predicted dissolved oxygen data at different depths; the formula for predicting dissolved oxygen content is shown below: ； In the formula, This represents the numerical value of the target dissolved oxygen monitoring data; This indicates that the distance between the artificial water body substrate and the target dissolved oxygen sensor is... The predicted dissolved oxygen data at the location; This represents the preset oxygen mass transfer coefficient, expressed in mg / (L·cm). This represents the preset gradient decay coefficient, in cm. - ¹; This represents the preset depth attenuation compensation coefficient, in mg / (L·cm³). Indicates water temperature as Temperature correction factor at time ; according to The remaining dissolved oxygen sensors after excluding the target dissolved oxygen sensor. The dissolved oxygen monitoring data transmitted by the dissolved oxygen sensor is used to correct the predicted dissolved oxygen distribution curve to obtain the target dissolved oxygen distribution curve.

3. The method according to claim 2, characterized in that, The determination of the control strategy includes: If the current drainage mode is the pulse mode, a numerical adjustment strategy for the first reference velocity and / or amplitude in the pulse water velocity calculation formula is determined based on the actual distribution area and the target distribution range of the aerobic microorganisms, facultative anaerobic microorganisms and / or anaerobic microorganisms in the artificial water body substrate. The formula for calculating the pulse water velocity is as follows: ； In the formula, This indicates that in the pulse mode, the top of the artificial water body substrate is in The primary target flow rate at any given moment; This indicates a first reference velocity that is numerically adjustable under the pulse mode, and the reference velocity is the basis for adjusting the flow velocity at the top of the artificial water body substrate; This indicates that the amplitude is numerically adjustable under the pulse mode; Indicates the pulse period; If the current drainage mode is the steady-speed mode, the numerical adjustment strategy for the second reference velocity and / or velocity coefficient in the steady-speed flow velocity formula is determined based on the actual distribution area and the target distribution range of the aerobic microorganisms, facultative anaerobic microorganisms and / or anaerobic microorganisms in the artificial water body substrate. The formula for the steady-state flow rate is as follows: ； In the formula, This indicates that in the steady-speed mode, the top of the artificial water body base is at... The second target flow velocity at any given time; This indicates a second reference speed that is numerically adjustable in the steady-speed mode; This refers to the speed coefficient, which is numerically adjustable under the steady-speed mode.

4. The method according to claim 1, characterized in that, The plurality of sensors further includes: a chemical oxygen demand (COD) sensor, which is disposed on top of the artificial water body substrate; the step of determining, based on monitoring data transmitted by the plurality of sensors, that the current drainage mode of the drainage equipment needs to be adjusted further includes: The actual chemical oxygen demand ratio is determined based on the chemical oxygen demand monitoring data transmitted by the chemical oxygen demand sensor. Based on the actual chemical oxygen demand ratio, the target chemical oxygen demand ratio, and the actual flow velocity at the top of the artificial water body substrate, determine the pulse activity index or the steady-state activity index; Wherein, the target chemical oxygen demand ratio is the chemical oxygen demand ratio of the aerobic microorganisms, the facultative anaerobic microorganisms, and the anaerobic microorganisms when their treatment performance on the wastewater meets expectations; the activity index characterizes the overall activity level of the aerobic microorganisms, the facultative anaerobic microorganisms, and the anaerobic microorganisms in the artificial water body substrate; the pulse activity index indicates the activity index under the pulse mode; and the steady-rate activity index indicates the activity index under the steady-rate mode. If the pulse activity index or the steady-speed activity index does not meet expectations, it is determined that the current drainage mode of the drainage equipment needs to be adjusted.

5. The method according to claim 1, characterized in that, If it is determined, based on monitoring data transmitted by multiple sensors, that the current drainage mode of the drainage equipment needs to be adjusted, the method further includes: Obtain the first flow velocity and the second flow velocity at the top of the artificial water body substrate; Wherein, the first flow velocity is the actual flow velocity with the maximum value collected in the pulse mode; the second flow velocity is the actual flow velocity collected in the steady-state mode; Determine the dynamic balance coefficient based on the first flow velocity and the second flow velocity; The dynamic balance coefficient characterizes the dynamic adjustment capability and balance level of the wastewater treatment control system under the switching operation of the pulse mode and the steady speed mode. If the dynamic balance coefficient does not meet expectations, it is determined that the current drainage mode of the drainage equipment needs to be adjusted.

6. A wastewater treatment and control system based on an artificial water body substrate, characterized in that, The artificial water body base is set on a natural base in a polluted water area, the water level of which is higher than the top of the artificial water body base; the system includes: drainage equipment, multiple sensors and control devices installed in the artificial water body base and the polluted water area, the drainage equipment being used to extract the wastewater to be treated from the polluted water area that does not naturally flow past the top of the artificial water body base and to discharge the extracted wastewater to be treated toward the top of the artificial water body base; The control device is used to determine a control strategy if, during the process of monitoring the artificial water body substrate to treat the sewage in the polluted water area, it is determined based on the monitoring data transmitted by multiple sensors that the current drainage mode of the drainage equipment needs to be adjusted. The drainage mode of the drainage device includes a pulse mode and a steady speed mode. The pulse mode is used to periodically change the flow velocity at the top of the artificial water body base, and the steady speed mode is used to keep the flow velocity at the top of the artificial water body base stable. The control device is used to regulate the current drainage mode of the drainage device according to the regulation strategy of the regulation method of claim 1.

7. An electronic device, characterized in that, The electronic device includes a processor and a memory, the memory being used to store applications, and the processor enabling the electronic device to implement the wastewater treatment control method based on an artificial water body substrate as described in any one of claims 1 to 5 by running or executing software programs stored in the memory.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store program code executed by a processor, the program code being used to implement the wastewater treatment control method based on an artificial water body substrate as described in any one of claims 1 to 5.

9. A computer program product, characterized in that, The computer program product includes computer instructions that, when executed on an electronic device, cause the electronic device to implement the wastewater treatment control method based on an artificial water body substrate as described in any one of claims 1 to 5.

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