A continuous water inlet control method for expressway service area sewage treatment

Abstract

The application discloses a continuous water inlet device and control method for expressway service area sewage treatment, and belongs to the technical field of sewage treatment. The continuous water inlet control method for expressway service area sewage treatment comprises the following steps: service area water inlet water quality and quantity detection, obtaining sewage water quality and quantity information of a service area to be treated, wherein the information comprises the concentration of various pollutants and daily water inlet quantity of daily and holiday; adjusting pool design reconstruction; tail water quality information collection; reflux sewage treatment process information analysis; double-pump control and water inlet and outlet linkage information analysis; the application realizes linkage of water pump one, water pump two, reflux pump one and reflux pump two, so that the sewage treatment device can obtain continuous and uniform water inlet during operation, treatment facilities are usually designed to achieve the best treatment effect within a certain water inlet load range, and the continuous and uniform water inlet can help maintain stable operation of the treatment facilities.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, especially to a continuous water inlet control method for sewage treatment in a highway service area. BACKGROUND

[0002] The highway service area is an important part of the highway service system, which provides catering, resting, accommodation, vehicle repair and other services. However, since the service area is far away from the city, sewage cannot be discharged into the municipal pipe network, and sewage treatment facilities need to be constructed in the service area. The existing facilities have problems such as unreasonable treatment water quantity, water quality impact load and maintenance management. The sewage in the highway service area is mainly restaurant catering wastewater and public toilet fecal sewage, and the nitrogen and phosphorus concentrations in the sewage are 2-3 times those in typical urban sewage, making it difficult to remove nitrogen and phosphorus. At the same time, the sewage treatment scale is small, but the sewage quantity varies greatly. Due to weather, season, time period and other special conditions, the randomness of vehicle traffic is great, which leads to great fluctuation of sewage quantity, making it difficult to continuously and stably treat sewage to standard.

[0003] At present, a regulating tank is arranged before the sewage treatment facility in the highway service area, and the water inlet process generally adopts double-pump start-stop control. The minimum and maximum water levels are set to make the water level of the regulating tank fluctuate within this range. This double-pump system can effectively control the water quantity entering the sewage treatment facility during daily operation, making the water quantity entering the regulating tank more stable, thereby ensuring the stability of the sewage treatment effect and the treatment quality. In addition, the double-pump control can also realize the switching of backup pumps, which can automatically switch to the standby pump when one pump fails, ensuring the continuity and reliability of sewage treatment.

[0004] However, this control method has some problems. On the one hand, for the sewage treatment in the service area, the sewage quantity changes greatly during weekends and holidays. The water quantity during the peak period can even reach ten times the daily water quantity. This leads to high-load operation of the double-pump system under such high water quantity impact load, which may cause damage to the pump. In addition, a large amount of sewage enters the sewage treatment facility in a very short time, which may destroy the ecology in the treatment facility and affect the sewage treatment effect. On the other hand, there is little human flow at night in the service area, which leads to very low water inlet quantity at night. The treatment facility cannot be supplied with carbon source for a long time, which may destroy the ecological system in the biochemical unit and affect the sewage treatment effect. SUMMARY

[0005] The purpose of the present application is to solve the problems in the prior art and provide a continuous water inlet control method for sewage treatment in a highway service area.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A continuous water inlet control method for sewage treatment in a highway service area, further comprising the following steps:

[0008] S1: service area water inlet quality and quantity detection: obtain sewage quality and quantity information of the service area to be treated, including concentrations of various pollutants, daily water inlet quantity on weekdays and holidays, time variation coefficient, daily variation coefficient, and annual variation coefficient, and statistics of night flow size;

[0009] S2: adjustment tank design and reconstruction: based on the daily water inlet flow of the service area, design the size of the adjustment tank according to the actual site conditions, and divide it into tank A and tank B; determine the minimum water level of tank A and tank B according to the flow variation, so as to determine the parameters of water pump 1 and water pump 2;

[0010] S3: tail water quality information collection: obtain tail water quality and quantity information of the service area to be treated, mainly including concentrations of various pollutants, and determine the tail water treatment effect after the process;

[0011] S4: analysis of backflow sewage treatment process information: based on the determination of the front section water inlet flow variation and the tail water treatment process effect, comprehensively adjust the backflow ratio of backflow sewage;

[0012] S5: double-pump control and water inlet and outlet linkage information analysis: after obtaining the above required information, according to the comprehensive results of water inlet flow and tail water treatment, real-time adjust the double-pump water inlet flow and control the backflow ratio, realize the continuous water quantity into the process unit and reduce the impact, and cope with the impact load of the service area peak period.

[0013] Preferably, in step S1, the specific analysis process includes: according to the preset service area to be measured, multiple sampling points are arranged in the adjustment tank before the biochemical unit, and multiple working days, rest days and holidays are selected for sampling.

[0014] Preferably, in step S2, the specific analysis process includes: determining the preset volume and position of the adjustment tank according to the actual site conditions; based on the determination of the normal working day and peak period flow, the adjustment tank is divided into tank A and tank B; the design of tank A should meet the water inlet flow in normal working days, and tank B is designed to cope with the water quantity impact in peak period.

[0015] Preferably, in step S3, the specific analysis process includes: multiple sampling points are arranged at the outlet section of the sewage treatment device, and multiple working days and holidays are selected for sampling, mainly to obtain pollution analysis indexes including NH4 + -N, NO3 - -N, TP and COD, record the concentrations of various pollutants as Coutn, compare the increase and change of pollutant concentration during the water quantity impact period and the normal working day, and whether it reaches the treatment standard, and based on the obtained tail water quality, adjust the proportion of backflow quantity.

[0016] Preferably, the specific analysis process in step S4 includes: achieving the reflux according to the real-time change of the water inflow, adjusting the reflux flow in real time by detecting the water level change of the A pool and the B pool of the adjusting pool.

[0017] Preferably, the specific analysis process of step five includes: on the basis of analyzing the water inflow of normal working days, designing the hydraulic retention time according to the obtained average daily flow, so that the water pump one continuously and uniformly inflows; the design requirement of the water pump one is to meet the water inflow demand of normal working days, and needs to be continuously operated, so that the biochemical unit can obtain uniform inflow; at the same time, the water level sensor group electrically connected with the water pump one is installed in the adjusting pool and is connected with the reflux facility, and under the condition of normal working days, the water pump one can meet the normal working demand of the service area.

[0018] A continuous water inflow control device for highway service area sewage treatment, comprising a sewage treatment device arranged in a highway service area, an adjusting pool arranged in front of the sewage treatment device, the adjusting pool is provided with an A pool and a B pool, an overflow port is arranged on the inner wall of the A pool and is connected with the B pool;

[0019] A transmission assembly is arranged between the output ends of the A pool and the B pool and the input end of the sewage treatment device, the transmission assembly comprises a three-way pipe three, the output end of the three-way pipe three is connected with the input end of the sewage treatment device through a pipeline, two input ends of the three-way pipe three are respectively connected with a water pump one and a water pump two, the input end of the water pump one is connected with the output end of the A pool, and the input end of the water pump two is connected with the output end of the B pool.

[0020] Preferably, a water level sensor group is arranged in each of the A pool and the B pool, each water level sensor group comprises a low-level sensor and a high-level sensor, and the water level sensor group arranged in the B pool further comprises a group of starting sensors.

[0021] Compared with the prior art, the present application provides a continuous water inflow control method for highway service area sewage treatment, which has the following beneficial effects:

[0022] 1. The continuous water inflow control method for highway service area sewage treatment, through the linkage of the water pump one, the water pump two, the reflux pump one and the reflux pump two, the sewage treatment device can obtain continuous and uniform water inflow during operation, and the treatment facility is usually designed to achieve the best treatment effect within a certain water inflow load range, and the continuous and uniform water inflow can help maintain the stable operation of the treatment facility.

[0023] 2、The continuous water inlet control method for the expressway service area sewage treatment solves the problem of poor effluent effect of the treatment facility when the water quantity is impacted, and ensures that the treatment facility can supplement carbon source in time throughout the day and maintains the ecological system of the biochemical unit. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A front view of the continuous water inlet control method for the expressway service area sewage treatment according to the present application;

[0025] Figure 2 A flowchart of the continuous water inlet control method for the expressway service area sewage treatment according to the present application;

[0026] Figure 3 A B-pool front view of the continuous water inlet control method for the expressway service area sewage treatment according to the present application;

[0027] Figure 4 A three-way pipe one front view of the continuous water inlet control method for the expressway service area sewage treatment according to the present application.

[0028] In the figure: 1, sewage treatment device; 101, effluent tank; 201, reflux pump one; 202, temporary storage pool; 203, reflux pump two; 204, three-way pipe one; 205, three-way pipe two; 206, connecting pipe; 207, water inlet pipe; 3, regulating pool; 301, A-pool; 3011, sewage inlet; 302, B-pool; 303, overflow; 501, suspended filler; 304, water pump one; 305, water pump two; 306, three-way pipe three. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] Embodiment one: a continuous water inlet control method for the expressway service area sewage treatment, comprising the following steps:

[0032] I. Service area water quality and quantity detection: obtain the sewage water quality and quantity information of the service area to be treated, including the concentration of various pollutants, daily water inflow on weekdays and holidays, time variation coefficient, daily variation coefficient, and annual variation coefficient, and statistics of night flow size;

[0033] Specifically: according to the preset service area to be measured, multiple sampling points are arranged in the adjusting tank 3 in front of the biochemical unit of the sewage treatment device 1, and multiple working days, rest days and holidays are selected for sampling; the main obtained pollution analysis indexes include NH4 + -N, NO3 - -N, TP and COD; the concentration of various pollutants is recorded as C n , and the concentration change of pollutants in peak period is compared with that in normal working days;

[0034] Further: a flow meter is arranged in the adjusting tank 3 to record the daily and hourly flow changes, determine the flow changes in normal working days and peak period, record the daily flow as Q1, and record the peak flow as Q2; and the period from 8 pm to 6 am the next day is defined as night flow, recorded as Qnight; the period from 6 am to 8 pm is defined as daytime flow, recorded as Qday;

[0035] II. Design and reconstruction of adjusting tank 3: based on the daily inflow of the service area, the size of the adjusting tank 3 is designed according to the actual site conditions, and is divided into A tank 301 and B tank 302; according to the flow change, the lowest water level of A tank 301 and B tank 302 is determined, so that the parameters of water pump one 304 and water pump two 305 are determined;

[0036] Specifically: the preset volume and position of the adjusting tank 3 are determined according to the actual site conditions; the adjusting tank 3 is divided into A tank 301 and B tank 302 based on the normal working day and peak period flow; the design of A tank 301 should meet the normal working day water inflow, and B tank 302 is designed to cope with the peak period water inflow;

[0037] Further: let Q01, Q02 be the normal daily inflow and outflow, and Q11, Q12 be the peak period inflow and outflow; H0, H1 be the water level of the adjusting tank 3 at normal and peak period balance; according to the water balance formula , the relationship between flow and water level of the adjusting tank 3 can be obtained as follows: H1 / H0=Q 2 11 / Q 2 01=Q 2 12 / Q 2 02;

[0038] Further: both pools are controlled by a single pump; in the case of normal working day water inflow, set water pump one 304 to uniformly and continuously small flow water inflow in A pool 301; when water quantity is impacted, A pool 301 water overflows to B pool 302, when the water level reaches a certain height, water pump two 305 starts, linked with water pump one 304, until B pool 302 reaches the preset minimum water level;

[0039] Further: in the design of B pool 302, mainly to cope with water quantity and water quality impact load, a hanging filler 501 is arranged in B pool 302, so that the water inflow first carries out partial denitrification in B pool 302, reducing the load of the biochemical unit, according to the pollutant concentration C in the peak period, the filler volume is designed under the most unfavorable condition, and the volume of the adjusting pool 3 is recorded as S;

[0040] Three, tail water quality information collection: obtain the tail water quantity and quality information of the service area to be treated, mainly including various pollutant concentrations, and determine the tail water treatment effect after the process;

[0041] Specifically: a plurality of sampling points are arranged at the effluent section of the sewage treatment device 1, and sampling is carried out on multiple working days and holidays, and the main pollutant analysis indexes obtained include NH4 + -N, NO3 - -N, TP and COD, the concentrations of various pollutants are recorded as C out n , compare the increase and change of the pollutant concentration during the water quantity impact period with that during the normal working day, and whether it reaches the treatment standard, on the basis of obtaining the tail water quality, adjust the proportion of the backflow water quantity;

[0042] Four, backflow sewage treatment process information analysis: based on the determination of the inflow variation of the previous section and the tail water treatment process effect, comprehensively adjust the backflow ratio of the backflow sewage;

[0043] Specifically: the backflow is realized according to the real-time change of the inflow, the water level change of the A pool 301 and the B pool 302 of the adjusting pool 3 is detected, and the backflow quantity is adjusted in real time;

[0044] Further: the area S of the adjusting pool 3, the length L of the effluent pipe, the local resistance coefficient ξ, and the pipe diameter d are designed to satisfy , Q01= , when the inflow suddenly changes to Q11 and the water level of the adjusting pool 3 reaches H1, the reduction degree θ of the adjusting pool 3 to the peak inflow is θ= ;

[0045] Further: by analyzing the daily inflow and water quality, a suitable backflow ratio is set; when the water quantity is impacted, the water level in the adjusting pool 3 naturally rises, the backflow ratio is controlled in real time, the effluent is drained to the temporary storage pool 202, and waits for the end of the impact. This part of water is backflowed to the adjusting pool 3;

[0046] Further: by analyzing the ratio of daytime flow Qday and night flow Qnight, in the early stage of flow reduction, the calculated backflow into the temporary storage pool 202 is stored, and when the night water level is detected to be sharply decreased, the control of the temporary storage pool 202 sewage backflow to the A pool 301 of the adjusting pool 3 is restarted, ensuring that the biochemical unit has water inflow at all times, and the ecological system will not be affected by the lack of carbon source supplement, thereby affecting the sewage treatment effect;

[0047] Further: when the water volume is impacted, the water volume stored in the temporary storage pool 202 during the day is slowly backflowed to the adjusting pool 3 when the water level is detected to be decreased at night;

[0048] Five: double-pump control and water inflow and outflow linkage information analysis: after obtaining the above required information, according to the comprehensive results of water inflow and tail water treatment, the water inflow of water pump one 304 and water pump two 305 is adjusted in real time, and the backflow ratio is controlled, so as to realize the continuous water inflow into the process unit and reduce the impact of the peak period of the service area;

[0049] Specifically: on the basis of analyzing the water inflow of normal working days, the average daily flow is designed according to the obtained average daily flow, so that the water pump one 304 continuously and uniformly inflows water; the design requirement of the water pump one 304 is to meet the water inflow demand of normal working days, and needs to be continuously operated, so that the biochemical unit can obtain uniform water inflow; at the same time, the water level sensor group connected with the water pump one 304 in the adjusting pool 3 is connected with the backflow facility, and the water pump one 304 can meet the normal working of the service area under the condition of normal working days;

[0050] When the night comes, the flow is sharply reduced, the sensor senses that the water level is gradually decreased until the preset minimum water level, and feeds back to the backflow facility to control the pre-stored water to flow back to the A pool 301 of the adjusting pool 3; at the same time, the water inflow of the water pump one 304 is linkage controlled to reduce, so as to meet the preset minimum water inflow, so as to ensure that the biochemical unit has water inflow at night, so as not to destroy the ecology of the biochemical unit;

[0051] Further: when facing water quality impact, the water inflow in the A pool 301 of the adjusting pool 3 overflows into the B pool 302 of the adjusting pool 3, but the water pump two 305 does not start at this time, and the water inflow performs partial denitrification in the filler area; the water level in the B pool 302 of the adjusting pool 3 is continuously increased until the preset starting water level is reached, and the water pump two 305 is started; the water pump two 305 continuously and uniformly inflows water, and operates together with the water pump one 304, until the B pool 302 reaches the preset minimum water level, and the water pump two 305 stops;

[0052] Further: when water pump two 305 starts, it is linked with the backflow device to control the backflow flow to reduce the water impact; when water pump two 305 stops for a period of time, the normal backflow is restored to ensure that the water inflow is as uniform and continuous as possible during the peak period;

[0053] Embodiment two: refer to Figure 1 - Figure 4 A continuous water inlet control device for highway service area sewage treatment, comprising: a sewage treatment device 1 arranged in the highway service area, an adjusting tank 3 arranged in front of the sewage treatment device 1, the adjusting tank 3 being provided with A tank 301 and B tank 302, and an overflow port 303 being arranged on the inner wall of the A tank 301 and being connected with the B tank 302;

[0054] A tank 301 and B tank 302 are provided with a transmission assembly between the output ends and the input end of the sewage treatment device 1, and the transmission assembly comprises: a three-way pipe three 306, the output end of the three-way pipe three 306 is connected with the input end of the sewage treatment device 1 through a pipeline, and the two input ends of the three-way pipe three 306 are respectively connected with water pump one 304 and water pump two 305, the input end of the water pump one 304 is connected with the output end of the A tank 301, and the input end of the water pump two 305 is connected with the output end of the B tank 302;

[0055] Principle of use: the service area sewage is introduced through the sewage inlet 3011 of the A tank 301, the sewage in the A tank 301 is introduced into the sewage treatment device 1 through the three-way pipe three 306 and the pipeline connected with the output end of the three-way pipe three 306 by the water pump one 304, and the sewage is treated, when the water quantity and water quality impact is encountered, the A tank 301 is filled and overflowed from the overflow port 303 to the B tank 302, the water pump two 305 connected with the output end of the B tank 302 is opened to send water to the sewage treatment device 1, and the efficiency is improved;

[0056] The problem existing in the above device is that the water pump two 305 does not know when to start and when to close, therefore, a water level sensor group is installed in the A tank 301 and the B tank 302, each water level sensor group comprises a low-level sensor and a high-level sensor, and the water level sensor group installed in the B tank 302 further comprises a group of start sensors, when the water quantity and water quality impact is encountered, the A tank 301 is filled and overflowed from the overflow port 303 to the B tank 302, when the water level in the B tank 302 reaches the position of the start sensor, the water pump two 305 is opened to pump the sewage in the B tank 302 into the sewage treatment device 1, and when the water level in the B tank 302 reaches the low-level sensor, the water pump two 305 is closed;

[0057] In the above scheme, the water quantity impact is dealt with by water pump one 304 and water pump two 305, but when the two pumps supply water to the sewage treatment device 1 at the same time under such high water quantity impact load, a large amount of sewage enters the sewage treatment device 1 in a very short time, which can cause the ecology in the treatment facility to be destroyed and can also affect the sewage treatment effect; therefore, the suspended filler 501 is arranged in the B pool 302, so that the inflow water is subjected to partial denitrification in the B pool 302, thereby reducing the load of the biochemical unit;

[0058] Further, the output end of the sewage treatment device 1 is connected with the effluent tank 101, the sewage treated by the sewage treatment device 1 is guided to the effluent tank 101, and then is guided out of the effluent tank 101, part of the water flow is subjected to backflow to the adjusting pool 3, but when facing water quantity impact, the backflow water can increase the load of the adjusting pool 3, therefore, the temporary storage pool 202 is arranged between the backflow water outlet of the effluent tank 101 and the adjusting pool 3, when facing water quantity impact, the backflow water is guided to the temporary storage pool 202, and when the water flow is reduced at night, the water is transmitted to the adjusting pool 3 to supply water to the sewage treatment device 1;

[0059] Specifically, the two sides of the temporary storage pool 202 are respectively provided with the three-way pipe one 204 and the three-way pipe two 205, the input end of the three-way pipe one 204 is connected with the backflow pump one 201, the input end of the backflow pump one 201 is connected with the backflow water outlet of the effluent tank 101, the output end of the three-way pipe two 205 is connected with the backflow pump two 203, the output end of the backflow pump two 203 is connected with the inflow pipe 207, the two groups of input ends of the three-way pipe two 205 are connected with the output end of the temporary storage pool 202 in one group and are connected with the connecting pipe 206 in the other group, the other end of the connecting pipe 206 is connected with one group of the two groups of output ends of the three-way pipe one 204, the other group of the output ends of the three-way pipe one 204 is connected with the input end of the temporary storage pool 202, and the input end, the output end and the connecting pipe 206 are all connected with the valve one 208;

[0060] In use, the backflow pump one 201 and the backflow pump two 203 are opened, the water flow is guided into the A pool 301 of the adjusting pool 3 through the connecting pipe 206 and the inflow pipe 207, when facing water quantity impact, according to the water level in the adjusting pool 3, the power of the backflow pump two 203 is reduced, the valve at the input end of the temporary storage pool 202 is opened, the water flow guided out of the backflow pump one 201 is not reduced, and the backflow pump two 203 with reduced power cannot be completely guided out, the water flow not guided out is guided to the temporary storage pool 202, when the water pump two 305 of the B pool 302 is started, the backflow pump two 203 is controlled to be closed, and the valve on the connecting pipe 206 is closed, so that the water flow guided out of the backflow pump one 201 is all transmitted to the temporary storage pool 202 for storage, when the water pump two 305 is closed, the backflow pump two 203 is started and operates at the reduced power, and the valve on the connecting pipe 206 is opened;

[0061] When the water level of the A pool 301 is lower than the high level sensor, the power of the backflow pump two 203 is adjusted to be the same as the backflow pump one 201, and the valve at the input end of the temporary storage pool 202 is closed;

[0062] When the sewage is reduced at night, the water inflow and outflow of the sewage treatment device 1 are reduced, and therefore, the valve at the output end of the temporary storage pool 202 is opened, the valve connecting the pipe 206 is closed, the water in the temporary storage pool 202 is guided into the A pool 301, and the water pump one 304 is controlled to reduce the water inflow of the sewage treatment device 1, so that the preset minimum water inflow is reached, and the ecological system of the biochemical unit of the sewage treatment device 1 is ensured to have water inflow, so that the ecological system of the biochemical unit is not damaged.

[0063] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A method for controlling continuous influent flow to wastewater treatment in highway service areas, characterized in that, It also includes the following steps: S1: Service Area Influent Water Quality and Quantity Detection: Obtain wastewater quality and quantity information from the service area to be treated, including the concentration of various pollutants, daily influent volume during weekdays and holidays, hourly variation coefficient, daily variation coefficient, and annual variation coefficient, and calculate the nighttime flow rate. S2: Regulating tank design and modification: Based on the daily water inflow of the service area, the size of the regulating tank is designed according to the actual site conditions and it is divided into tank A and tank B; according to the flow rate changes, the minimum water level set in tank A and tank B is determined, thereby determining the parameters of the set water pump one and water pump two. The input end of water pump one is connected to the output end of tank A, and the input end of water pump two is connected to the output end of tank B. S3: Wastewater quality information collection: Obtain wastewater quantity and quality information from the service area to be treated, mainly including the concentration of various pollutants, and determine the wastewater treatment effect after the process. S4: Analysis of information on the wastewater treatment process: Based on the determination of changes in the influent flow rate and the effect of the effluent treatment process, the recirculation ratio of the wastewater is comprehensively adjusted. By analyzing the ratio of daytime flow Q_day to nighttime flow Q_night, the calculated return flow is controlled in real time to be stored in a temporary storage pool during the period before the flow drops sharply. S5: Dual-pump control and inlet / outlet linkage information analysis: After obtaining the required information, based on the combined results of inlet flow rate and effluent treatment, the inlet flow rate of the two pumps is adjusted in real time and the reflux ratio is controlled to achieve continuous water flow into the process unit and reduce shock, thus coping with the peak impact load in the service area; under normal working day water intake conditions, pump one is set to uniformly and continuously supply water to pool A at a small flow rate; when facing water quality shock, the inlet water in pool A of the equalization tank overflows into pool B of the equalization tank; but at this time, pump two does not start, and the inlet water undergoes partial denitrification in the packing area; The water level in pool B of the regulating tank rises continuously until it reaches the preset start-up water level, at which point pump two starts. Pump two continuously and evenly introduces water, operating in conjunction with pump one, until pool B 302 reaches the preset minimum water level, at which point pump two stops. When pump two starts, it is linked with the reflux device to control the reflux flow rate to decrease. After pump two stops for a period of time, normal reflux resumes, ensuring that the water intake is as even and continuous as possible even during peak periods. When night falls, the flow rate decreases sharply. The sensor detects the water level gradually dropping until it reaches the preset minimum water level, and then feeds back to the return flow facility to control the pre-stored water to flow back to pool A of the regulating tank. At the same time, the water pump controls the inflow rate to decrease until the preset minimum inflow rate is met.

2. The continuous influent control method for sewage treatment in highway service areas according to claim 1, characterized in that, The specific analysis process in step S1 includes: setting multiple sampling points in the conditioning pool in front of the biochemical unit according to the preset service area to be tested, and taking samples on multiple working days, rest days and holidays respectively.

3. The continuous influent control method for sewage treatment in highway service areas according to claim 2, characterized in that, The specific analysis process in step S2 includes: determining the preset volume and location of the equalization tank based on the actual site conditions; the equalization tank is divided into tank A and tank B based on the determined flow rates during normal working days and peak periods; the design of tank A should be able to meet the inflow flow rate during normal working days, while tank B is designed to cope with the water volume impact during peak periods.

4. The continuous influent control method for sewage treatment in highway service areas according to claim 3, characterized in that, The specific analysis process in step S3 includes: setting up multiple sampling points at the effluent section of the wastewater treatment device, and taking samples on multiple weekdays and holidays. The main pollutant analysis indicators obtained include NH4. + -N, NO3 - -N, TP, and COD, the concentration of each pollutant is denoted as Cout. n By comparing the increase in pollutant concentration during the water volume surge period with that of a normal working day and whether the treatment standards are met, the proportion of return water volume is adjusted based on the obtained effluent water quality.

5. The continuous influent control method for sewage treatment in highway service areas according to claim 4, characterized in that, The specific analysis process in step S4 includes: realizing the return flow by adjusting the return flow rate in real time according to the real-time changes in the influent flow rate, and by detecting the water level changes in pools A and B of the equalization tank.

6. The continuous influent control method for sewage treatment in highway service areas according to claim 1, characterized in that, The specific analysis process of step S4 includes: based on the analysis of the influent flow rate on normal working days, designing the hydraulic retention time according to the obtained average daily flow rate to ensure that water pump one continuously and uniformly supplies water; the design requirement of water pump one is to meet the influent demand on normal working days and to maintain continuous operation so that the biochemical unit can obtain uniform influent; at the same time, a water level sensor group electrically connected to water pump one and the return flow facility are installed in the regulating tank and interconnected, so that water pump one is sufficient to meet the normal operation of the service area under normal working day conditions.

7. A continuous influent control device for sewage treatment in highway service areas, applied to the continuous influent control method for sewage treatment in highway service areas as described in any one of claims 1-6, characterized in that, The system includes a sewage treatment device installed in a highway service area. An equalization tank, designated as Tank A and Tank B, is installed before the sewage treatment device. Tank A has an overflow outlet on its inner wall that connects to Tank B. The output end of the sewage treatment device is connected to an effluent tank. A temporary storage tank is installed between the return outlet of the effluent tank and the equalization tank. Two T-pipes, T-pipe 1 and T-pipe 2, are installed on opposite sides of the temporary storage tank. The input end of T-pipe 1 is connected to a return pump 1, which in turn connects to the return outlet of the effluent tank. The output end of T-pipe 2 is connected to another return pump 2, which in turn connects to an inlet pipe. One set of the two input ends of T-pipe 2 is connected to the output end of the temporary storage tank, and the other set is connected to a connecting pipe. The other end of the connecting pipe is connected to one set of the two output ends of T-pipe 1, and the other set of output ends of T-pipe 1 is connected to the input end of the temporary storage tank.

8. A continuous influent control device for sewage treatment in a highway service area according to claim 7, characterized in that, A transmission component is provided between the output ends of pool A and pool B and the input end of the sewage treatment device. The transmission component includes a three-way pipe, the output end of which is connected to the input end of the sewage treatment device through a pipe.

9. A continuous influent control device for sewage treatment in a highway service area according to claim 8, characterized in that, The two input ends of the three-way pipe are respectively connected to water pump one and water pump two.

10. A continuous influent control device for sewage treatment in a highway service area according to claim 9, characterized in that, Both pool A and pool B are equipped with water level sensor groups. Each water level sensor group includes a low-level sensor and a high-level sensor. The water level sensor group installed in pool B also includes a set of start-up sensors.

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