Continuous water inlet control method for sewage treatment in expressway service area

Abstract

The invention discloses a continuous water inlet device for sewage treatment in an expressway service area and a control method, and belongs to the technical field of sewage treatment. A continuous water inlet control method for sewage treatment in an expressway service area comprises the following steps: service area water inlet quality and quantity detection: obtaining sewage quantity and quality information of a to-be-treated service area, including concentrations of various pollutants and daily water inlet quantities in daily and holidays; designing and transforming the adjusting tank; collecting tail water quality information; analyzing the information of the reflux sewage treatment process; performing double-pump control and water inlet and outlet linkage information analysis; through linkage of the first water pump and the second water pump with the first reflux pump and the second reflux pump, the sewage treatment device can obtain continuous and uniform inflow water in the operation process, the treatment facility is generally designed to achieve the optimal treatment effect within a certain inflow water load range, and the continuous and uniform inflow water can help maintain stable operation of the treatment facility.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a method for controlling continuous water inflow in sewage treatment in a highway service area. Background Art

[0002] Highway service areas are an important part of the highway service system, providing catering, rest, accommodation, auto repair and other services; however, since the service areas are far away from the urban area, sewage cannot be discharged into the municipal pipe network, and service areas need to build sewage treatment facilities; existing facilities have problems such as water treatment volume, water quality impact load and unreasonable maintenance and management; highway service area sewage is mainly composed of restaurant catering wastewater and fecal sewage from public toilets. The nitrogen and phosphorus concentrations in sewage are 2-3 times that of typical urban sewage, and it is difficult to remove nitrogen and phosphorus; at the same time, the scale of sewage treatment is small but the amount of sewage varies greatly. Due to factors such as weather, season, time period and other special conditions, the randomness of vehicle traffic is very large, which leads to large fluctuations in sewage volume, making it difficult to continuously and stably treat sewage to meet standards;

[0003] At present, a regulating tank is set up in front of the sewage treatment facilities in the highway service area. The water inlet process generally adopts dual pump start-stop control, and the minimum and maximum water levels are set so that the water level in the regulating tank fluctuates within this range. This dual pump system can effectively control the amount of water entering the sewage treatment facility during daily operation, making the water inlet of the regulating tank more stable, thereby ensuring the stability and quality of sewage treatment. In addition, dual pump control can also realize the switching of backup pumps. When one pump fails, it can automatically switch to the backup pump, ensuring the continuity and reliability of sewage treatment.

[0004] However, this control method has some problems. On the one hand, for sewage treatment in service areas, the amount of sewage varies greatly during weekends and holidays, and the peak water volume can even reach ten times the daily water volume. This causes the dual-pump system to run at high load under such a high water impact load, which is very likely to cause damage to the pump. In addition, a large amount of sewage enters the sewage treatment facility in a very short period of time, which will cause the ecology in the treatment facility to be destroyed and affect the sewage treatment effect. On the other hand, there is very little traffic in the service area at night, which leads to extremely low water inflow at night. The treatment facility cannot obtain carbon source replenishment for a long time, which will cause the ecosystem in the biochemical unit to be destroyed, thus affecting the sewage treatment effect. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a method for controlling continuous water inflow in sewage treatment in a highway service area.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

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

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

[0009] S2: Design and transformation of regulating pool: Based on the daily water inflow of the service area, the size of the regulating pool is designed and divided into pool A and pool B according to the actual on-site conditions; according to the flow change, the minimum water level of pool A and pool B is determined, so as to determine the parameters of pump 1 and pump 2;

[0010] S3: Collection of tailwater quality information: Obtain tailwater quantity and quality information of the service area to be treated, mainly including the concentration of various pollutants, to determine the treatment effect of tailwater after the process;

[0011] S4: Analysis of the information of the return sewage treatment process: Based on the changes in the influent flow rate of the previous stage and the effect of the tailwater treatment process, the return ratio of the return sewage is comprehensively adjusted;

[0012] S5: Dual pump control and inlet and outlet water linkage information analysis: After obtaining the required information above, the dual pump inlet flow is adjusted in real time and the reflux ratio is controlled according to the comprehensive results of the inlet flow and tail water treatment, so as to achieve continuous water flow entering the process unit and reduce shocks, and cope with the shock load during the peak period of the service area.

[0013] Preferably, the specific analysis process in step S1 includes: according to the preset service area to be tested, multiple sampling points are set in the regulating pool in front of its biochemical unit, and multiple working days, rest days and holidays are selected for sampling.

[0014] Preferably, the specific analysis process in step S2 includes: determining the preset volume and position of the regulating tank according to the actual situation on site; the regulating tank is divided into pool A and pool B on the basis of determining the flow rate on normal working days and peak periods; the design of pool A should be able to meet the water inlet flow rate on normal working days, and pool B is designed to cope with the water volume impact during peak periods.

[0015] Preferably, the specific analysis process in step S3 includes: setting multiple sampling points in the outlet section of the sewage treatment device, selecting multiple working days and holidays for sampling, and the main pollutant analysis indicators obtained include NH4+-N, NO3--N, TP and COD, etc. The concentration of each pollutant is recorded as Coutn, and the growth change of pollutant concentration during the water impact period compared with the normal working day is compared to whether the treatment standard is met. On the basis of obtaining the tail water quality, the proportion of return water is adjusted.

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

[0017] Preferably, the specific analysis process of step five includes: based on the analysis of the water inlet flow rate on normal working days, designing the hydraulic retention time according to the obtained average daily flow rate so that water pump one can continuously and evenly inlet water; the design requirement of water pump one is to be able to meet the water inlet demand on normal working days, and it needs to maintain continuous operation so that the biochemical unit can obtain uniform water inlet; at the same time, a water level sensor group electrically connected to water pump one installed in the regulating tank is interconnected with the return facility, and under normal working days, water pump one is sufficient to meet the normal working needs of the service area.

[0018] A continuous water inflow control device for sewage treatment in a highway service area, comprising a sewage treatment device arranged in the highway service area, a regulating tank arranged in front of the sewage treatment device, the regulating tank being configured as tank A and tank B, and an overflow port communicating with tank B being opened on the inner wall of tank A;

[0019] A transmission component is provided between the output ends of pool A and pool B and the input end of the sewage treatment device, and the transmission component includes: a three-way pipe, the output end of the three-way pipe is connected to the input end of the sewage treatment device through a pipeline, and the two input ends of the three-way pipe are respectively connected to a water pump one and a water pump two, the input end of the water pump one is connected to the output end of pool A, and the input end of the water pump two is connected to the output end of pool B.

[0020] Preferably, water level sensor groups are installed in both pool A and pool B, each of the water level sensor groups includes a low-level sensor and a high-level sensor, and the water level sensor group installed in pool B also includes a group of start sensors.

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

[0022] 1. A method for controlling continuous water inflow in sewage treatment in a highway service area, through the linkage between water pump 1 and water pump 2 and reflux pump 1 and reflux pump 2, enables the sewage treatment device to obtain continuous and uniform water inflow during operation. Treatment facilities are usually designed to achieve the best treatment effect within a certain water inflow load range. Continuous and uniform water inflow can help maintain the stable operation of the treatment facilities.

[0023] 2. This method of continuous water inflow control for sewage treatment in highway service areas solves the problem of poor water output from treatment facilities during water shock by transforming the regulating tank and adjusting the return flow in real time. In addition, considering the problem of very little water inflow at night, it ensures that the treatment facilities can replenish carbon sources in time throughout the day and maintain the ecosystem of the biochemical unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a method for controlling continuous water inflow in sewage treatment in a highway service area proposed by the present invention;

[0025] Figure 2 A schematic flow chart of a method for controlling continuous water inflow in sewage treatment in a highway service area proposed by the present invention;

[0026] Figure 3 A front view of tank B of a method for controlling continuous water inflow in sewage treatment in a highway service area proposed by the present invention;

[0027] Figure 4 A front view of a three-way pipe of a method for controlling continuous water inflow in sewage treatment in a highway service area proposed by the present invention.

[0028] In the figure: 1. sewage treatment device; 101. water outlet tank; 201. return pump 1; 202. temporary storage tank; 203. return pump 2; 204. tee pipe 1; 205. tee pipe 2; 206. connecting pipe; 207. water inlet pipe; 3. regulating tank; 301. tank A; 3011. sewage inlet; 302. tank B; 303. overflow port; 501. hanging filler; 304. water pump 1; 305. water pump 2; 306. tee pipe 3. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Embodiment 1: A method for controlling continuous water inflow in sewage treatment in a highway service area, comprising the following steps:

[0032] 1. Service area inlet water quality and quantity detection: Obtain the sewage water quantity and quality information of the service area to be treated, including the concentration of various pollutants, daily inlet volume on weekdays and holidays, time variation coefficient, daily variation coefficient and annual variation coefficient, and calculate the night flow size;

[0033] Specifically: according to the preset service area to be tested, multiple sampling points are set in the regulating tank 3 before the biochemical unit of the sewage treatment device 1, and multiple working days, rest days and holidays are selected for sampling; the main pollutant analysis indicators obtained include NH4+-N, NO3--N, TP and COD, etc.; the concentration of each type of pollutant is recorded as Cinn, and the growth change of pollutant concentration during the peak period is compared with that of normal working days;

[0034] Further: a flow meter is set in the regulating tank 3 to record the flow changes every day and every hour, determine the flow changes between normal working days and peak traffic hours, record the daily flow as Q1, and the peak flow as Q2; and define the night flow from 8 pm to 6 am the next day as Q night; and define the day flow from 6 am to 8 pm as Q day;

[0035] 2. Design and transformation of regulating pool 3: Based on the daily water inflow of the service area, the size of regulating pool 3 is designed and divided into pool A 301 and pool B 302 according to the actual on-site conditions; according to the flow change, the minimum water level of pool A 301 and pool B 302 is determined, thereby determining the parameters of the set water pump 1 304 and water pump 2 305;

[0036] Specifically: the preset volume and position of the regulating pool 3 are determined according to the actual situation on site; the regulating pool 3 is divided into pool A 301 and pool B 302 on the basis of determining the flow rate during normal working days and peak periods; the design of pool A 301 should be able to meet the water flow rate during normal working days, and pool B 302 is designed to cope with the impact of water volume during peak periods;

[0037] Further: let Q01, Q02 be the normal daily inflow and outflow, Q11, Q12 be the peak inflow and outflow; H0, H1 are the water levels of regulating pool 3 during normal and peak balance; according to the water balance formula Q = μcA.2gH, the relationship between the flow and the water level of regulating pool 3 can be obtained as follows: H1 / H0 = Q112 / Q012 = Q122 / Q022;

[0038] Further: both pools are controlled by a single pump; in the case of water inflow on a normal working day, a water pump 1 304 is set to uniformly and continuously inflow water at a small flow rate into the A pool 301; when the water volume impacts, the water in the A pool 301 overflows to the B pool 302, and when the water level reaches a certain height, the water pump 2 305 is started and linked with the water pump 1 304 until the B pool 302 reaches the preset minimum water level;

[0039] Further: In the design of pool B 302, mainly to cope with the impact load of water quantity and water quality, a suspended filler 501 is set in pool B 302, so that the incoming water is first partially denitrified in pool B 302 to reduce the load of the biochemical unit. According to the peak pollutant concentration C in the previous analysis, the filling filler volume is designed under the most unfavorable conditions, and the volume of the regulating pool 3 is recorded as S;

[0040] 3. Tailwater quality information collection: Obtain tailwater quantity and quality information of the service area to be treated, mainly including the concentration of various pollutants, to determine the treatment effect of tailwater after the process;

[0041] Specifically: multiple sampling points are set at the outlet section of the sewage treatment device 1, and multiple working days and holidays are selected for sampling. The main pollutant analysis indicators obtained include NH4+-N, NO3--N, TP and COD, etc. The concentration of each pollutant is recorded as Coutn. The growth change of pollutant concentration during the water impact period compared with the normal working day and whether it meets the treatment standard are compared. On the basis of obtaining the tail water quality, the proportion of return water volume is adjusted;

[0042] 4. Analysis of the information of the return sewage treatment process: Based on the changes in the influent flow rate of the previous stage and the effect of the tailwater treatment process, the return ratio of the return sewage is comprehensively adjusted;

[0043] Specifically: the reflux is changed in real time according to the inflow flow rate, and the reflux flow rate is adjusted in real time by detecting the water level changes of the A pool 301 and the B pool 302 of the regulating pool 3;

[0044] Further: Design the area S of the regulating pool 3, the length L of the outlet pipe, the local resistance coefficient ξ, and the pipe diameter d. Available When the inflow flow rate suddenly changes to Q11 and the water level of regulating pool 3 reaches H1, the reduction degree θ of the peak inflow flow rate of regulating pool 3 is:

[0045] Further: by analyzing the daily water inflow and water quality, a suitable return ratio is set; when responding to water volume shock, the water level in the regulating tank 3 rises naturally, and the return ratio is reduced by real-time control, and the effluent is diverted to the temporary storage tank 202, waiting for the shock to end, and the water is returned to the regulating tank 3;

[0046] Further: by analyzing the ratio of the daytime flow Qday to the nighttime flow Qnight, in the period before the flow drops sharply, the calculated return flow is controlled in real time to enter the temporary storage tank 202 for storage, and when it is detected that the water level drops sharply at night, the sewage in the temporary storage tank 202 is controlled to flow back to the A tank 301 of the regulating tank 3 to react again, so as to ensure that the biochemical unit is always supplied with water, and the ecosystem will not be affected by the lack of carbon source supplementation.

[0047] Further: when there is a water impact, the water stored in the temporary storage tank 202 during the day slowly returns part of the water to the regulating tank 3 when the water level drops at night;

[0048] V. Dual pump control and inlet and outlet water linkage information analysis: After obtaining the required information, the inlet flow of pump 1 304 and pump 2 305 is adjusted in real time and the reflux ratio is controlled according to the comprehensive results of the inlet flow and tail water treatment, so as to achieve continuous water flow entering the process unit and reduce impact, and cope with the impact load during the peak period of the service area;

[0049] Specifically: based on the analysis of the water inflow on a normal working day, the hydraulic retention time is designed according to the average daily flow, so that the water pump 304 can continuously and evenly inflow water; the design requirement of the water pump 304 is to meet the water inflow demand on a normal working day, and it needs to maintain continuous operation so that the biochemical unit can obtain uniform water inflow; at the same time, the water level sensor group installed in the regulating tank 3 and electrically connected to the water pump 304 is interconnected with the return flow facility, and the water pump 304 is sufficient to meet the normal working of the service area under the condition of a normal working day;

[0050] When night falls, the flow rate decreases sharply. When the sensor senses that the water level gradually drops to the preset minimum water level, it is fed back to the return facility to control the pre-stored water to flow back to the A pool 301 of the regulating pool 3; at the same time, the water pump 1 304 is linked to control the water inflow flow rate to reduce the preset minimum water inflow flow rate, ensuring that the biochemical unit has water at night, so as not to damage the ecology of the biochemical unit;

[0051] Further: when facing water quality shock, the influent in pool A 301 of regulating pool 3 overflows into pool B 302 of regulating pool 3, but at this time, water pump 2 305 is not started, and the influent is partially denitrified in the packing area; the water level in pool B 302 of regulating pool 3 continues to rise until it reaches the preset starting water level, and then water pump 2 305 is started; water pump 2 305 continuously and evenly inflows water and operates together with water pump 1 304 until pool B 302 reaches the preset minimum water level, and then water pump 2 305 stops;

[0052] Further: when the water pump 2 305 is started, it is linked with the reflux device to control the reflux flow rate to reduce the water volume impact; when the water pump 2 305 stops for a period of time, it resumes normal reflux to ensure that the water inflow is as uniform and continuous as possible during the peak period;

[0053] Example 2: Reference Figure 1 - Figure 4A continuous water inflow control device for sewage treatment in a highway service area, comprising: a sewage treatment device 1 arranged in the highway service area, a regulating tank 3 arranged in front of the sewage treatment device 1, the regulating tank 3 being configured as a tank A 301 and a tank B 302, an overflow port 303 communicating with the tank B 302 is opened on the inner wall of the tank A 301;

[0054] A transmission component is provided between the output ends of the A pool 301 and the B pool 302 and the input end of the sewage treatment device 1, and the transmission component includes: a three-way pipe 306, the output end of the three-way pipe 306 is connected to the input end of the sewage treatment device 1 through a pipeline, and the two input ends of the three-way pipe 306 are respectively connected to a water pump 1 304 and a water pump 2 305, the input end of the water pump 1 304 is connected to the output end of the A pool 301, and the input end of the water pump 2 305 is connected to the output end of the B pool 302;

[0055] Working principle: The sewage from the service area is introduced through the sewage inlet 3011 of the A pool 301, and the sewage in the A pool 301 is introduced into the sewage treatment device 1 through the three-way pipe 306 and the pipe connected to the output end of the three-way pipe 306 by the water pump 1 304 to treat the sewage. When encountering water quantity and water quality shock, the A pool 301 will overflow from the overflow port 303 to the B pool 302 after being filled, and the water pump 2 305 connected to the output end of the B pool 302 is turned on to supply water to the sewage treatment device 1, thereby improving efficiency;

[0056] The problem existing in the above device is that the water pump 2 305 does not know when to start and when to shut down. Therefore, water level sensor groups are installed in both pool A 301 and pool B 302. Each water level sensor group includes a low-level sensor and a high-level sensor. At the same time, the water level sensor group installed in pool B 302 also includes a group of start sensors. When encountering water quantity and water quality shocks, pool A 301 will overflow from the overflow port 303 to pool B 302 after being filled. When the water level in pool B 302 reaches the position of the start sensor, the water pump 2 305 is turned on to pump out the sewage in pool B 302 and send it to the sewage treatment device 1. When the water level in pool B 302 reaches the low-level sensor, the water pump 2 305 is turned off.

[0057] In the above scheme, water volume shock is dealt with by water pump 1 304 and water pump 2 305. However, when the two pumps simultaneously supply water to the sewage treatment device 1, a large amount of sewage enters the sewage treatment device 1 under such a high water volume shock load in a very short time, which will cause the ecology in the treatment facility to be destroyed and also affect the sewage treatment effect. For this reason, a hanging filler 501 is set in the B pool 302, so that the incoming water is first partially denitrified in the B pool 302 to reduce the load of the biochemical unit.

[0058] Furthermore, the output end of the sewage treatment device 1 is connected to a water outlet tank 101. After the sewage treatment device 1 has finished treating the sewage, the sewage will be exported to the water outlet tank 101, and then exported from the water outlet tank 101. Part of the water flow will flow back to the regulating tank 3. However, when facing a water volume shock, the returned water will increase the load of the regulating tank 3. For this reason, a temporary storage tank 202 is set between the return water outlet of the water outlet tank 101 and the regulating tank 3. When facing a water volume shock, the returned water will be guided to the temporary storage tank 202, and the water flow will be reduced at night and transmitted to the regulating tank 3 to supply water for the sewage treatment device 1.

[0059] Specifically: a three-way pipe 204 and a three-way pipe 205 are respectively provided on both sides of the temporary storage tank 202, the input end of the three-way pipe 204 is connected to the reflux pump 201, the input end of the reflux pump 201 is connected to the reflux outlet of the water outlet box 101, the output end of the three-way pipe 205 is connected to the reflux pump 203, the output end of the reflux pump 203 is connected to the water inlet pipe 207, the two groups of input ends of the three-way pipe 205, one group is connected to the output end of the temporary storage tank 202, and the other group is connected to the connecting pipe 206, the other end of the connecting pipe 206 is connected to one of the two groups of output ends of the three-way pipe 204, the other group of output ends of the three-way pipe 204 is connected to the input end of the temporary storage tank 202, and the input end, output end and connecting pipe 206 of the temporary storage tank 202 are all connected to the valve 1 208;

[0060] When in use, turn on the reflux pump 1 201 and the reflux pump 2 203, and the water flow is introduced into the A pool 301 of the regulating pool 3 through the connecting pipe 206 and the water inlet pipe 207. When facing a water volume impact, according to the water level in the regulating pool 3, the power of the reflux pump 2 203 is reduced, and the valve at the input end of the temporary storage pool 202 is opened. The water flow derived from the reflux pump 1 201 is not reduced, and the reflux pump 2 203 after the power is reduced cannot be completely derived, and the undertaken water flow will be guided to the temporary storage pool 202. When the water pump 2 305 of the B pool 302 is started, the reflux pump 2 203 is controlled to be closed, and the valve on the connecting pipe 206 is closed, so that the water flow derived from the reflux pump 1 201 is all transmitted to the temporary storage pool 202 for storage. When the water pump 2 305 is turned off, the reflux pump 2 203 is started, and it is operated at the reduced power, and the valve on the connecting pipe 206 is opened;

[0061] When the water level of pool A 301 is lower than the high level sensor, the power of reflux pump 2 203 is adjusted to be the same as that of reflux pump 1 201, and the valve at the input end of temporary storage pool 202 is closed at the same time;

[0062] When the sewage decreases at night, the water inlet and outlet of the sewage treatment device 1 will decrease. For this purpose, the valve at the output end of the temporary storage tank 202 is opened and the valve of the connecting pipe 206 is closed to guide the water flow in the temporary storage tank 202 into the A tank 301. The water pump 304 is controlled to reduce the water inlet flow of the sewage treatment device 1 to meet the preset minimum water inlet flow, thereby ensuring that the biochemical unit of the sewage treatment device 1 has water inflow at night, thereby not damaging the ecology of the biochemical unit.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for controlling continuous water inflow in sewage treatment in a highway service area, characterized in that: The following steps are also included: S1: Service area inlet water quality and quantity detection: Obtain the sewage water quantity and quality information of the service area to be treated, including the concentration of various pollutants, daily inlet volume on weekdays and holidays, time variation coefficient, daily variation coefficient and annual variation coefficient, and calculate the night flow size; S2: Design and transformation of the regulating pool (3): Based on the daily water inflow of the service area, the size of the regulating pool (3) is designed and divided into pool A (301) and pool B (302) according to the actual on-site conditions; according to the flow rate change, the minimum water level of pool A (301) and pool B (302) is determined, thereby determining the parameters of the set water pump 1 (304) and water pump 2 (305); S3: Collection of tailwater quality information: Obtain tailwater quantity and quality information of the service area to be treated, mainly including the concentration of various pollutants, to determine the treatment effect of tailwater after the process; S4: Analysis of the information of the return sewage treatment process: Based on the changes in the influent flow rate of the previous stage and the effect of the tailwater treatment process, the return ratio of the return sewage is comprehensively adjusted; S5: Dual pump control and inlet and outlet water linkage information analysis: After obtaining the required information above, the dual pump inlet flow is adjusted in real time and the reflux ratio is controlled according to the comprehensive results of the inlet flow and tail water treatment, so as to achieve continuous water flow entering the process unit and reduce shocks, and cope with the shock load during the peak period of the service area.

2. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 1, characterized in that: The specific analysis process in step S1 includes: according to the preset service area to be tested, a plurality of sampling points are set in the regulating pool (3) in front of its biochemical unit, and a plurality of working days, rest days and holidays are selected for sampling.

3. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 2, characterized in that: The specific analysis process in step S2 includes: determining the preset volume and position of the regulating pool (3) according to the actual situation on site; dividing the regulating pool (3) into a pool A (301) and a pool B (302) based on the flow rate during normal working days and peak periods; the design of the pool A (301) should be able to meet the water flow rate during normal working days, and the pool B (302) is designed to cope with the water flow impact during peak periods.

4. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 3, characterized in that: The specific analysis process in step S3 includes: setting a plurality of sampling points at the outlet section of the sewage treatment device (1), selecting a plurality of working days and holidays for sampling, and obtaining the main pollutant analysis indicators including NH4+-N, NO3--N, TP and COD, etc. The concentration of each pollutant is recorded as Coutn, and the pollutant concentration growth change during the water impact period is compared with that during the normal working day, and whether the treatment standard is met. On the basis of obtaining the tail water quality, the proportion of the return water volume is adjusted.

5. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 4, characterized in that: The specific analysis process in step S4 includes: achieving real-time changes in the backflow according to the inlet flow rate, and adjusting the backflow flow rate in real time by detecting the water level changes in pool A (301) and pool B (302) of the regulating pool (3).

6. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 1, characterized in that: The specific analysis process of step S4 includes: based on the analysis of the water inflow on a normal working day, the hydraulic retention time is designed according to the average daily flow so that the water pump (304) can continuously and evenly inlet water; the design requirement of the water pump (304) is to be able to meet the water inflow demand on a normal working day, and it needs to maintain continuous operation so that the biochemical unit can obtain uniform water inflow; at the same time, the water level sensor group electrically connected to the water pump (304) installed in the regulating tank (3) is interconnected with the return flow facility, and under the condition of a normal working day, the water pump (304) is sufficient to meet the normal operation of the service area.

7. A continuous water inflow control device for sewage treatment in a highway service area, applied to a continuous water inflow control method for sewage treatment in a highway service area according to any one of claims 1 to 6, characterized in that: The invention comprises a sewage treatment device (1) arranged in a highway service area, wherein a regulating tank (3) is arranged in front of the sewage treatment device (1), the regulating tank (3) is configured as a tank A (301) and a tank B (302), and an overflow port (303) communicating with the tank B (302) is provided on the inner wall of the tank A (301).

8. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 7, characterized in that: A transmission component is provided between the output ends of the A pool (301) and the B pool (302) and the input end of the sewage treatment device (1), and the transmission component comprises: a three-way pipe (306), and the output end of the three-way pipe (306) is connected to the input end of the sewage treatment device (1) through a pipeline.

9. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 8, characterized in that: The two input ends of the three-way pipe (306) are respectively connected to the water pump (304) and the water pump (305). The input end of the water pump (304) is connected to the output end of the A pool (301), and the input end of the water pump (305) is connected to the output end of the B pool (302).

10. A method for controlling continuous water inflow in sewage treatment in a highway service area according to claim 9, characterized in that: Water level sensor groups are installed in both pool A (301) and pool B (302), and each of the water level sensor groups includes a low-level sensor and a high-level sensor. The water level sensor group installed in pool B (302) also includes a group of start sensors.

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