Deformation process sewage treatment control system and control method

Abstract

The invention provides a deformation process sewage treatment control system which comprises a carbon source supply device, a raw water tank, a reclaimed water tank, an anoxic tank, an anaerobic tank, a sand filtration device, a disinfection device, a power supply system, an analog quantity acquisition system and a PLC control system, the analog quantity acquisition system acquires liquid level information in the carbon source supply device, the raw water tank, the reclaimed water tank, the anoxic tank, the anaerobic tank, the sand filter device and the disinfection device in real time and sends the liquid level information to the PLC control system, and the PLC control system controls liquid supply of the carbon source supply device, the raw water tank, the reclaimed water tank, the anoxic tank, the anaerobic tank, the sand filter device and the disinfection device and pollution discharge of the anaerobic tank. And the power supply system is used for providing power supply power for the analog quantity acquisition system and the PLC control system. The invention also provides a deformation process sewage treatment control method. The system and the method provided by the invention have the beneficial effects of high efficiency, space saving, flexibility, environmental friendliness, sustainability, reduction of operation cost and the like, and are a sewage treatment scheme worthy of popularization.

Description

Technical Field

[0001] The invention relates to sewage control and treatment technology, and in particular to a deformation process sewage treatment control system and a control method. Background Art

[0002] SBR (sequencing Batch-Flow Reactor Activated Sludge Process) is the abbreviation of intermittent activated sludge process. SBR reaction tanks usually proceed in five stages: water inlet, aeration, sedimentation, drainage and idleness. The CAST process is an improved process of the SBR process. On the basis of the SBR process reaction tank, a selective zone and anoxic zone are added. GJ-CAST is an improved CAST process for distributed small-scale sewage treatment projects.

[0003] The CAST process (Cyclic Activated Sludge Technology) is a cyclic activated sludge process that uses an intermittent reactor to repeatedly operate in the aeration and non-aeration stages, concentrating the biological reaction process and the mud-water separation process in one pool. The core features of this process include its cyclic, intermittent and efficient biological treatment capabilities. It can effectively remove organic matter, nitrogen, phosphorus and other pollutants in wastewater, and the average effluent water quality can reach very high standards.

[0004] The distributed sewage treatment system is a decentralized sewage treatment method that distributes sewage treatment equipment to the source, achieving efficient treatment of decentralized sewage. This method reduces the tediousness and time of road transmission and avoids the transportation problem of sludge in the traditional centralized treatment mode. At the same time, the distributed sewage treatment system has appropriate sewage treatment technology and stable equipment, as well as a complete monitoring and management system, which can ensure that sewage is treated in a timely and effective manner. Summary of the invention

[0005] The object of the present invention is to provide a deformation process sewage treatment control system and control method.

[0006] A deformation process sewage treatment control system comprises a carbon source supply device, a raw water tank, a middle water tank, an anoxic tank, an anaerobic tank, a sand filter device, a disinfection device, a power supply system, an analog quantity acquisition system and a PLC control system. The raw water tank is connected to the carbon source supply device, the anoxic tank and the anaerobic tank through pipelines respectively, the sand filter device is connected to the anaerobic tank through a pipeline, the disinfection device is connected to the sand filter device and the middle water tank through a pipeline, and the sand filter device is connected to the middle water tank through a pipeline. The analog quantity acquisition system collects liquid level information in the carbon source supply device, the raw water tank, the middle water tank, the anoxic tank, the anaerobic tank, the sand filter device and the disinfection device in real time, and sends the liquid level information to the PLC control system. The PLC control system controls the liquid supply of the carbon source supply device, the raw water tank, the middle water tank, the anoxic tank, the anaerobic tank, the sand filter device and the disinfection device and the sewage discharge of the anaerobic tank. The power supply system is used to provide power to the analog quantity acquisition system and the PLC control system.

[0007] Preferably, the analog quantity acquisition system includes a first liquid level gauge, a second liquid level gauge, a third liquid level gauge, a fourth liquid level gauge, a fifth liquid level gauge, a sixth liquid level gauge and a seventh liquid level gauge. The first liquid level gauge is installed in the anoxic tank, the second liquid level gauge is installed in the anaerobic tank, the third liquid level gauge is installed in the sand filtration device, the fourth liquid level gauge is installed in the intermediate water tank, the fifth liquid level gauge is installed in the carbon source supply device, the sixth liquid level gauge is installed in the disinfection device, and the seventh liquid level gauge is installed in the raw water tank.

[0008] Preferably, the PLC control system includes a raw water tank sewage lifting pump, a return pump, a sludge pump, a backwash pump, a first dosing pump, a second dosing pump and an aeration backwash fan. The raw water tank sewage lifting pump is equipped with the raw water tank, the return pump is equipped with the anaerobic tank, the sludge pump is equipped with the anaerobic tank, the backwash pump is connected to the grey water tank and the sand filter device, the first dosing pump is equipped with the carbon source supply device, the second dosing pump is equipped with the disinfection device, and the aeration backwash fan is connected to the anaerobic tank and the sand filter device.

[0009] Preferably, the PLC control system includes a first electric ball valve, a second electric ball valve, a third electric ball valve, a fourth electric ball valve, a fifth electric ball valve, a sixth electric ball valve, a seventh electric ball valve, an eighth electric ball valve, a ninth electric ball valve and a tenth electric ball valve. The first electric ball valve is mounted on a pipe connecting the anoxic tank and the raw water tank, the second electric ball valve is mounted on a pipe connecting the anaerobic tank and the raw water tank, the third electric ball valve is mounted on a pipe connecting the anaerobic tank and the aeration backwash fan, the fourth electric ball valve is mounted on a pipe connecting the sand filter device and the aeration backwash fan, the fifth electric ball valve is mounted on a pipe connecting the anaerobic tank and the sand filter device, the sixth electric ball valve is mounted on a pipe connecting the anoxic tank and the sand filter device, the seventh electric ball valve is connected to the sand filter device through a pipe, the eighth electric ball valve is mounted on a pipe connecting the anaerobic tank and the anoxic tank, the ninth electric ball valve is mounted on a pipe connecting the anaerobic tank and the sludge pump, and the tenth electric ball valve is mounted on a pipe connecting the sand filter device, the disinfection device and the intermediate water tank.

[0010] Preferably, the PLC control system includes a main control circuit and a control circuit, the main control circuit is connected to the three-phase power electricity, the A phase line, B phase line and C phase line of the main control circuit are respectively connected in parallel with the raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan, and a manual switch button is connected to the main control circuit; the control circuit includes a PLC chip, and the PLC chip is electrically connected to the raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan.

[0011] Preferably, the main control circuit includes a voltmeter, a first manual push button switch, a second manual push button switch, several relays, a frequency converter, an indicator light and a DC power supply. The voltmeter is connected in parallel with the A phase line and the C phase line of the three-phase line. The raw water pool sewage lifting pump is connected in series with a relay and in parallel with the C phase line. The sludge pump is connected in series with a relay and in parallel with the B phase line. The backwash pump is connected in series with a relay and in parallel with the A phase line. The first dosing pump is connected in series with a relay and in parallel with the B phase line. The second dosing pump is connected in series with a relay and in parallel with the B phase line. The reflux pump is connected in series with a relay and in parallel with the B phase line. The aeration backwash fan is connected to the frequency converter and to a relay. After the first manual push button switch is connected to the second manual push button switch, it is connected to the C phase line. The indicator light is connected to the C phase line. The raw water pool sewage lifting pump, the sludge pump, the backwash pump, the first dosing pump, the second dosing pump, the first manual push button switch, the second manual push button switch, the indicator light and the DC power supply are connected in parallel.

[0012] Preferably, the control circuit includes a PLC chip, several current relays KA, several AC contactors KM and several switches. The COM output terminal of the PLC chip is connected to a switch, which is connected to the positive pole of the 24V power supply. The several switches are connected in parallel with the positive pole of the 24V power supply. Pins Y0 to Y6 of the PLC chip are respectively connected to a current relay KA, and are respectively connected to the raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan. The raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan are respectively connected to an AC contactor KM and in parallel with the neutral line. Each current relay KA is connected in parallel with the 220V power supply and is respectively connected to an AC contactor KM.

[0013] A deformation process sewage treatment control method, including a deformation process sewage treatment control method including a manual control method, an automatic control method or a time-sharing control method;

[0014] Manual control method: the PLC control system is provided with a program control system and a control interface, the control interface is connected with the corresponding control switch, and the raw water pool sewage lifting pump, the return pump, the sludge pump, the backwash pump, the first dosing pump, the second dosing pump, the aeration backwash fan, the first electric ball valve, the second electric ball valve, the third electric ball valve, the fourth electric ball valve, the fifth electric ball valve, the sixth electric ball valve, the seventh electric ball valve, the eighth electric ball valve, the ninth electric ball valve and the tenth electric ball valve are manually controlled, and the corresponding icons are clicked on the control interface to open or close;

[0015] The automatic control method includes automatic control in the debugging operation stage and control in the automatic operation stage;

[0016] The automatic control in the debugging and operation stage includes debugging water inlet control, adjusting reaction control, adjusting sedimentation control, and debugging water outlet control; the above process is repeated until the water quality meets the standard, and then the automatic operation mode is started; the automatic operation stage includes automatic water inlet control, automatic reaction control, automatic sedimentation stage control, and automatic water outlet control;

[0017] The time-sharing control method includes time-sharing water inlet control, time-sharing reaction control, time-sharing sedimentation control and time-sharing water outlet control.

[0018] Preferably, the automatic control method includes automatic control in the debugging operation phase and control in the automatic operation phase;

[0019] The automatic control during the debugging operation phase includes the following steps:

[0020] Debug the water inlet control, the PLC control system sets the low water level reference value Y7-1, and the PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7-1, then the raw water pool sewage lifting pump is turned on to feed water into the reaction tank, and the first electric ball valve and the second electric ball valve are turned on at the same time; when the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan, and at the same time turns on the third electric valve to aerate the anaerobic tank, and when the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump, the first electric valve and the second electric valve are turned off;

[0021] Debug reaction control. When the P / R / N value of the anaerobic tank reaches the reference value △P1 / △R1 / △N1 or the duration reaches the set value t1, turn on the return pump and the eighth electric valve. The return pump can be set to intermittent operation. When the P / R / N value of the anaerobic tank reaches the set reference value △P2 / △R2 / △N2 or the duration reaches the set duration t2, turn off the return pump and the eighth electric valve; when the P / R / N / D value of the anaerobic tank reaches the set reference value △P3 / △R3 / △N3 / △D1, turn off the aeration backwash fan and enter the sedimentation stage;

[0022] Debug sedimentation control: when the duration reaches the set duration t3 or M is lower than M1, the sedimentation ends; debug water outlet control: open the sixth electric valve and the seventh electric valve, and when the second liquid level gauge of the anaerobic tank reaches the set reference value Y2-3, close the sixth electric valve and the seventh electric valve; repeat the above process until the water quality meets the standard, and then start the automatic operation mode;

[0023] Automatic operation stage: turn on the automatic operation mode, automatically control the water inlet, and set the low water level reference value Y7 of the PLC control system - 1 ， The PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7 - 1 ， The sewage lifting pump of the raw water pool is turned on to feed water into the reaction pool, and the first electric ball valve and the second electric ball valve are opened at the same time; when the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan, and at the same time opens the third electric valve to aerate the anaerobic tank; when the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, the sewage lifting pump of the raw water pool, the first electric valve and the second electric valve are closed;

[0024] The PLC control system sets a low water level reference value Y7-1. When the PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7-1, the raw water pool sewage lifting pump is turned on to feed water into the reaction pool, and the first electric ball valve and the second electric ball valve are turned on at the same time. When the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan and turns on the third electric valve to aerate the anaerobic tank. When the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump, the first electric valve and the second electric valve are turned off.

[0025] Automatic reaction control: When the P / R / N value of the anaerobic tank reaches the reference value △P1 / △R1 / △N1 or the duration is longer than the set time t1, the return pump and the eighth electric valve are turned on. The return pump can be set to intermittent operation time t10 and stop time t11. When the P / R / N value of the anaerobic tank reaches the reference value △P2 / △R2 / △N2 or the duration reaches the set time t2, the return pump and the eighth electric valve are turned off; when the P / R / N / D value of the anaerobic tank reaches the reference value △P3 / △R3 / △N3 / △D1, the aeration backwash fan B7 is turned off to enter the sedimentation stage;

[0026] Automatic precipitation stage: When t3 is reached or M is lower than M1, precipitation ends;

[0027] Automatic water outlet control: open the fifth electric valve, the sixth electric valve and the tenth electric valve;

[0028] When the third liquid level gauge reaches the reference liquid level value Y3-1, the fifth electric valve, the sixth electric valve and the tenth electric valve are closed, the aeration backwashing fan and the fourth electric valve are turned on, and the sand filter device starts backwashing;

[0029] When the duration is longer than the set time t4, the backwash pump and the tenth electric valve are turned on for air and water washing; when the duration is longer than the set time t5, the aeration backwash fan and the fourth electric valve are turned off, and the backwash pump and the tenth electric valve are kept turned on for water backwashing; when the duration reaches the set time t6, the backwash pump, the aeration backwash fan and the fourth electric valve are turned off, and the fifth electric valve and the sixth electric valve are turned on;

[0030] When the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-3, the fifth electric valve and the sixth electric valve are closed, the set time is delayed, and the tenth electric valve is closed;

[0031] Time-sharing water inlet control: The PLC control system sets the low water level reference value Y7-1. When the PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7-1, the raw water pool sewage lifting pump is turned on to feed water into the reaction pool, and the first electric ball valve and the second electric ball valve are turned on at the same time. When the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan and opens the third electric valve to aerate the anaerobic tank. When the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump, the first electric valve and the second electric valve are turned off.

[0032] Time-sharing reaction control: when the aeration time reaches t7, the reflux pump and the eighth electric valve are turned on; when the time reaches t8, the reflux pump and the eighth electric valve are turned off; when the time reaches t9, the aeration backwash fan and the third electric valve are turned off, and sedimentation begins;

[0033] Time-sharing precipitation: When the precipitation time reaches t10, the precipitation ends;

[0034] Time-sharing water discharge: open the fifth electric valve, the sixth electric valve and the tenth electric valve, the sand filter device, when the third liquid level gauge reaches the reference value Y3-1, close the fifth electric valve, the sixth electric valve and the tenth electric valve, and open the aeration backwash fan and the fourth electric valve; when the time reaches the set value t4, open the backwash pump and the tenth electric valve, and perform air-water washing; when the time reaches the set value t5, close the aeration backwash fan and the fourth and third electric valves, keep the backwash pump and the tenth electric valve open, and continue water backwashing; when the time reaches the set value t6, close the backwash pump, the aeration backwash fan and the fourth electric valve, and open the fifth electric valve and the sixth electric valve; when the anaerobic tank level gauge reaches the liquid level reference value Y2-3, close the fifth electric valve and the sixth electric valve, and delay the set value to close the tenth electric valve.

[0035] Preferably, the program control system of the PLC control system is designed with a winter operation mode, and the process of starting the winter operation mode is the same as the debugging operation mode: when entering winter and the temperature is low, the operating frequency of the fan aeration backwash fan and the liquid level of the second liquid level gauge are adjusted, and the debugging operation mode is always repeated when water is not required;

[0036] When the water is discharged from the grey water tank, the water supply pump is controlled by frequency conversion according to the pressure of the user's grey water network. At least 3 electric valves are set to be switched on and off. When the low water level of the grey water tank liquid level gauge reaches the liquid level reference value Y4-1, the tap water inlet electric valve is opened, and it is closed when the set reference water level Y4-3 is reached; the low liquid level Y4-1 of the grey water tank is the backwash guarantee water level; the liquid level reference value Y4-2 of the grey water tank is the water level at which the grey water reuse pump can be started, and it stops when it drops to the low liquid level;

[0037] The linkage of the dosing pump, the first dosing pump of the carbon source is linked with the sewage lifting pump of the raw water pool, and can also be controlled to start and stop according to the △PH setting; the low position of the liquid level gauge can control the dosing pump to stop; the second dosing pump of disinfection is linked with the sixth electric valve and the tenth electric valve of the water outlet, and can also be manually set to control the start and stop separately. The low position of the sixth liquid level gauge can control the first dosing pump to stop;

[0038] Sludge discharge and backwashing, sludge discharge: control the opening of the sludge pump and the ninth electric valve according to the set duration, or introduce MLSS set value control, consider the backwashing of the submersible sewage pump in the regulating tank, and set the twelfth electric valve.

[0039] The improved CAST process distributed sewage treatment system brings many beneficial effects.

[0040] First of all, the CAST process (Cyclic Activated Sludge Technology) is a cyclic activated sludge process that uses an intermittent reactor to repeatedly operate in the aeration and non-aeration stages, concentrating the biological reaction process and the mud-water separation process in one pool. The core features of this process include its cyclicity, intermittency, and efficient biological treatment capabilities. It can effectively remove organic matter, nitrogen, phosphorus and other pollutants in wastewater, and the average effluent water quality can reach very high standards.

[0041] The distributed sewage treatment system is a decentralized sewage treatment method that distributes sewage treatment equipment to the source, achieving efficient treatment of decentralized sewage. This method reduces the tediousness and time of road transmission and avoids the transportation problem of sludge in the traditional centralized treatment mode. At the same time, the distributed sewage treatment system has appropriate sewage treatment technology and stable equipment, as well as a complete monitoring and management system, which can ensure that sewage is treated in a timely and effective manner.

[0042] Applying the improved GJ-CAST process to distributed sewage treatment systems can bring the following benefits:

[0043] Beneficial effects:

[0044] Improve treatment efficiency: The efficient biological treatment capacity of the GJ-CAST process can ensure that sewage is treated quickly and effectively, while the distributed system reduces transmission time and links, further improving the overall treatment efficiency.

[0045] Save space: The distributed sewage treatment system places sewage treatment equipment at the source of sewage, greatly reducing the occupation of ground space and making the space utilization of cities or industrial areas more reasonable.

[0046] Flexible and changeable: The design of the distributed sewage treatment system is flexible and can be adjusted and optimized according to different sewage sources and treatment requirements to achieve the best treatment effect.

[0047] Environmentally friendly and sustainable: During the treatment process, the GJ-CAST process decomposes organic matter into harmless substances through chemical oxidation and biodegradation, reducing pollution to the environment. At the same time, this technology can also recycle some practical substances in wastewater, such as nitrogen and phosphorus, for agricultural irrigation or other purposes, realizing the recycling of resources.

[0048] Reduce operating costs: The distributed sewage treatment system reduces the energy consumption and labor costs of sewage transmission. At the same time, the investment cost of the GJ-CAST process is relatively low and the operation is stable, which can reduce the overall operating costs.

[0049] In summary, the improved GJ-CAST process distributed sewage treatment system has the beneficial effects of high efficiency, space saving, flexibility, environmental protection, sustainability and reduced operating costs. It is a sewage treatment solution worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural diagram of the wastewater treatment control system of the deformation process;

[0051] Figure 2 This is a schematic diagram of the main circuit connection structure of the PL control system;

[0052] Figure 3 This is a schematic diagram of the control circuit connection of the PLC control system;

[0053] In the figure: carbon source supply device 1, raw water tank 2, intermediate water tank 3, anoxic tank 4, anaerobic tank 5, sand filter device 6, disinfection device 7, first liquid level gauge Y1, second liquid level gauge Y2, third liquid level gauge Y3, fourth liquid level gauge Y4, fifth liquid level gauge Y5, sixth liquid level gauge Y6, seventh liquid level gauge Y7, raw water tank sewage lifting pump B1, reflux pump B2, sludge pump B3, backwash pump B4, first dosing pump B5, second dosing pump B6, aeration backwash fan B7, first electric ball valve F1, second electric ball valve F2, third electric ball valve F3, fourth electric ball valve F4, fifth electric ball valve F5, sixth electric ball valve F6, seventh electric ball valve F7, eighth electric ball valve F8, ninth electric ball valve F9, tenth electric ball valve F10. DETAILED DESCRIPTION

[0054] In order to make the technical solution of the present invention easier to understand, the technical solution of the present invention is now clearly and completely described in the form of specific embodiments in conjunction with the accompanying drawings.

[0055] Please also see Figure 1 , Figure 2 and Figure 3 The deformation process sewage treatment control system includes a carbon source supply device 1, a raw water tank 2, a middle water tank 3, an anoxic tank 4, an anaerobic tank 5, a sand filter device 6, a disinfection device 7, a power supply system, an analog quantity acquisition system and a PLC control system. The raw water tank 2 is connected to the carbon source supply device 1, the anoxic tank 4 and the anaerobic tank 5 through pipelines, the sand filter device 6 is connected to the anaerobic tank 5 through a pipeline, the disinfection device 7 is connected to the sand filter device 6 and the middle water tank 3 through a pipeline, and the sand filter device 6 is connected to the middle water tank 3 through a pipeline. The analog quantity acquisition system collects liquid level information in the carbon source supply device 1, the raw water tank 2, the middle water tank 3, the anoxic tank 4, the anaerobic tank 5, the sand filter device 6 and the disinfection device 7 in real time, and sends the liquid level information to the PLC control system. The PLC control system controls the liquid supply of the carbon source supply device 1, the raw water tank 2, the middle water tank 3, the anoxic tank 4, the anaerobic tank 5, the sand filter device 6 and the disinfection device 7 and the sewage discharge of the anaerobic tank. The power supply system is used to provide power to the analog quantity acquisition system and the PLC control system.

[0056] The analog quantity acquisition system includes a first liquid level gauge Y1, a second liquid level gauge Y2, a third liquid level gauge Y3, a fourth liquid level gauge Y4, a fifth liquid level gauge Y5, a sixth liquid level gauge Y6 and a seventh liquid level gauge Y7. The first liquid level gauge Y1 is installed in the anoxic tank 4, the second liquid level gauge Y2 is installed in the anaerobic tank 5, the third liquid level gauge Y3 is installed in the sand filtration device 6, the fourth liquid level gauge Y4 is installed in the intermediate water tank 3, the fifth liquid level gauge Y5 is installed in the carbon source supply device 1, the sixth liquid level gauge Y6 is installed in the disinfection device 7, and the seventh liquid level gauge Y7 is installed in the raw water tank 2.

[0057] The PLC control system includes a raw water tank sewage lifting pump B1, a return pump B2, a sludge pump B3, a backwash pump B4, a first dosing pump B5, a second dosing pump B6 and an aeration backwash fan B7. The raw water tank sewage lifting pump B1 is equipped with the raw water tank 2, the return pump B2 is equipped with the anaerobic tank 5, the sludge pump B3 is equipped with the anaerobic tank 5, the backwash pump B4 is connected to the intermediate water tank 3 and the sand filter device 6, the first dosing pump B5 is equipped with the carbon source supply device 1, the second dosing pump B6 is equipped with the disinfection device 7, and the aeration backwash fan B7 is connected to the anaerobic tank 5 and the sand filter device 6.

[0058] The PLC control system includes a first electric ball valve F1, a second electric ball valve F2, a third electric ball valve F3, a fourth electric ball valve F4, a fifth electric ball valve F5, a sixth electric ball valve F6, a seventh electric ball valve F7, an eighth electric ball valve F8, a ninth electric ball valve F9 and a tenth electric ball valve F10. The first electric ball valve F1 is mounted on a pipe connecting the anoxic tank 4 and the raw water tank 2, the second electric ball valve F2 is mounted on a pipe connecting the anaerobic tank 5 and the raw water tank 2, the third electric ball valve F3 is mounted on a pipe connecting the anaerobic tank 5 and the aeration backwashing fan B7, and the fourth electric ball valve F 4 is mounted on the pipeline connecting the sand filter device 6 and the aeration backwash fan B7, the fifth electric ball valve F5 is mounted on the pipeline connecting the anaerobic tank 5 and the sand filter device 6, the sixth electric ball valve F6 is mounted on the pipeline connecting the anoxic tank 4 and the sand filter device 6, the seventh electric ball valve F7 is connected to the sand filter device 6 through a pipeline, the eighth electric ball valve F8 is mounted on the pipeline connecting the anaerobic tank 5 and the anoxic tank 4, the ninth electric ball valve F9 is mounted on the pipeline connecting the anaerobic tank 5 and the sludge pump B3, and the tenth electric ball valve F10 is mounted on the pipeline connecting the sand filter device 6 and the disinfection device 7 and the intermediate water tank 3.

[0059] The PLC control system includes a main control circuit and a control circuit. The main control circuit is connected to the three-phase power electricity. The A phase line, B phase line and C phase line of the main control circuit are respectively connected in parallel with the raw water pool sewage lifting pump B1, the return pump B2, the sludge pump B3, the backwash pump B4, the first dosing pump B5, the second dosing pump B6 and the aeration backwash fan B7. The main control circuit is connected with a manual switch button; the control circuit includes a PLC chip, and the PLC chip is electrically connected to the raw water pool sewage lifting pump B1, the return pump B2, the sludge pump B3, the backwash pump B4, the first dosing pump B5, the second dosing pump B6 and the aeration backwash fan B7.

[0060] The main control circuit includes a voltmeter, a first manual push button switch SB1, a second manual push button switch SB2, a number of relays, a frequency converter, an indicator light and a DC power supply. The voltmeter is connected in parallel with the A phase and the C phase of the three-phase line. The original pool sewage lifting pump B1 is connected in series with a relay QF1 and connected in parallel with the C phase. The mud pump B3 is connected in series with a relay QF2 and connected in parallel with the B phase. The backwash pump B4 is connected in series with a relay QF3 and connected in parallel with the A phase. The first dosing pump B5 is connected in series with a relay QF4 and connected in parallel with the B phase. The second dosing pump B6 is connected in series with a relay QF8 and connected in parallel with the B phase. QF5 is connected in series and in parallel with the B phase line, the reflux pump B2 is connected in series with a relay QF6 and in parallel with the B phase line, the aeration backwash fan B7 is connected to the frequency converter and to a relay QF7, the first manual button switch SB1 is connected to the second manual button switch SB2 and then connected to the C phase line, the indicator light L is connected to the C phase line, the raw water pool sewage lifting pump B1, the sludge pump B3, the backwash pump B4, the first dosing pump B5, the second dosing pump B6, the first manual button switch SB1, the second manual button switch SB2, the indicator light L and the DC power supply are connected in parallel.

[0061] The control circuit includes a PLC chip, several current relays KA, several AC contactors KM and several switches. The COM output end of the PLC chip is connected to a switch, which is connected to the positive pole of a 24V power supply. Several switches are connected in parallel with the positive pole of the 24V power supply. Pins Y0 to Y6 of the PLC chip are respectively connected to a current relay KA, and are respectively connected to the raw water pool sewage lifting pump B1, the reflux pump B2, the sludge pump B3, the backwash pump B4, the first dosing pump B5, the second dosing pump B6 and the aeration backwash fan B7. The raw water pool sewage lifting pump B1, the reflux pump B2, the sludge pump B3, the backwash pump B4, the first dosing pump B5, the second dosing pump B6 and the aeration backwash fan B7 are respectively connected to an AC contactor KM and in parallel with the neutral line. Each current relay KA is connected in parallel with a 220V power supply and is respectively connected to an AC contactor KM.

[0062] In this application, the sewage lifting pump B1 of the regulating tank adopts the specification and model WQ12-12-1.5, with a flow rate of 12m 3, head 12m, 1.5KW, diameter 50mm, bottom water inlet pipe diameter DN50, 220V; reflux pump B2 is a vertical centrifugal pump, the specifications and models used are: Q = 12m3 / h, P = 1.1kw, H = 12m, diameter 40mm, reflux suction pipe diameter 50mm, 380V; mud pump B3 is a self-priming centrifugal pump, the specifications and models are: 3-10-0.55, 25mm, 0.55KW, 220V; the specifications and models of backwash pump B4 are: 7-18-1.5, flow rate 7m 3. Lift 18m, 1.5KW, diameter 40mm, outlet pipe diameter 65mm, 220V; the specifications of the first dosing pump B5 and the second dosing pump B6 are: B5: WS-15-03-M, 15L / H, 3bar, 50W, 220V; B6: WS-50-01-M, 50L / H, 1bar, 80W, 220V;

[0063] Aeration backwash fan B7 is a rotary fan, model HC-40S, 0.75KW, wind pressure 3m, 380V, air volume 0.6m3 / min, 0.92*0.32*0.6, 32mm; the liquid level meter is stainless steel immersion type 3m, 24V, 4-20mA;

[0064] The first electric ball valve F1, the second electric ball valve F2, and the eighth electric ball valve F8 are PVC ball valves DN50, DC24VF3, the fourth electric ball valve F4 is a copper ball valve DN32, DC 24VF5, the sixth electric ball valve F6, the seventh electric ball valve F7, and the tenth electric ball valve F10 are PVC ball valves DN65, DC 24VF9, PVC ball valve DN32, DC 24V flow meter SLDG-MK, outlet DN65, 24V, 485 / 20ma flow meter SLDG-MK, return DN40, 24V, 485 / 20ma.

[0065] A control method for a sewage treatment control system using a deformation process, including a manual control method, an automatic control method or a time-sharing control method;

[0066] Manual control method: the PLC control system is provided with a program control system and a control interface, the control interface is connected with the corresponding control switch, and the raw water pool sewage lifting pump, the return pump, the sludge pump, the backwash pump, the first dosing pump, the second dosing pump, the aeration backwash fan, the first electric ball valve, the second electric ball valve, the third electric ball valve, the fourth electric ball valve, the fifth electric ball valve, the sixth electric ball valve, the seventh electric ball valve, the eighth electric ball valve, the ninth electric ball valve and the tenth electric ball valve are manually controlled, and the corresponding icons are clicked on the control interface to open or close;

[0067] Automatic control methods, including automatic control during the commissioning phase and control during the automatic operation phase;

[0068] The automatic control during the debugging operation phase includes the following steps:

[0069] Debug the water inlet control, the PLC control system sets the low water level reference value Y7-1, and the PLC control system determines that the seventh liquid level gauge Y7 is higher than the low water level reference value Y7-1, then the raw water pool sewage lifting pump B1 is turned on to feed water into the reaction tank, and the first electric ball valve F1 and the second electric ball valve F2 are turned on at the same time; when the second liquid level gauge Y2 of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan B7, and at the same time turns on the third electric valve F3 to aerate the anaerobic tank, and when the second liquid level gauge Y2 of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump B1, the first electric valve F1 and the second electric valve F2 are turned off;

[0070] Debug reaction control. When the P / R / N value of the anaerobic tank reaches the reference value △P1 / △R1 / △N1 or the duration reaches the set value t1, turn on the return pump B2 and the eighth electric valve F8. The return pump B2 can be set to intermittent operation. When the P / R / N value of the anaerobic tank reaches the set reference value △P2 / △R2 / △N2 or the duration reaches the set duration t2, turn off the return pump B2 and the eighth electric valve F8; when the P / R / N / D value of the anaerobic tank reaches the set reference value △P3 / △R3 / △N3 / △D1, turn off the aeration backwash fan B7 and enter the sedimentation stage;

[0071] Debugging sedimentation: When the duration reaches the set duration t3 or M is lower than M1, the sedimentation ends.

[0072] Debugging water outlet: Open the sixth electric valve F6 and the seventh electric valve F7. When the second liquid level gauge Y2 of the anaerobic tank reaches the set reference value Y2-3, close the sixth electric valve F6 and the seventh electric valve F7;

[0073] The above process is repeated until the water quality reaches the standard, and then the automatic operation mode is started.

[0074] Automatic operation stage: turn on the automatic operation mode;

[0075] Automatic water inlet control, the PLC control system sets the low water level reference value Y7-1. When the PLC control system determines that the seventh liquid level gauge Y7 is higher than the low water level reference value Y7-1, the raw water pool sewage lifting pump B1 is turned on to feed water into the reaction tank, and the first electric ball valve F1 and the second electric ball valve F2 are turned on at the same time; when the second liquid level gauge Y2 of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan B7, and at the same time turns on the third electric valve F3 to aerate the anaerobic tank. When the second liquid level gauge Y2 of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump B1, the first electric valve F1 and the second electric valve F2 are turned off;

[0076] The PLC control system sets a low water level reference value Y7-1. When the PLC control system determines that the seventh liquid level gauge Y7 is higher than the low water level reference value Y7-1, the raw water pool sewage lifting pump B1 is turned on to feed water into the reaction pool, and the first electric ball valve F1 and the second electric ball valve F2 are turned on at the same time. When the second liquid level gauge Y2 of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan B7, and at the same time turns on the third electric valve F3 to aerate the anaerobic tank. When the second liquid level gauge Y2 of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump B1, the first electric valve F1 and the second electric valve F2 are turned off.

[0077] Automatic response: When the P / R / N value of the anaerobic tank reaches the reference value △P1 / △R1 / △N1 or the duration is longer than the set time t1, the return pump B2 and the eighth electric valve F8 are turned on. The return pump B2 can be set to intermittent operation time t10 and stop time t11. When the P / R / N value of the anaerobic tank reaches the reference value △P2 / △R2 / △N2 or the duration reaches the set time t2, the return pump B2 and the eighth electric valve F8 are turned off; when the P / R / N / D value of the anaerobic tank reaches the reference value △P3 / △R3 / △N3 / △D1, the aeration backwash fan B7 is turned off to enter the sedimentation stage;

[0078] Automatic precipitation stage: When t3 is reached or M is lower than M1, precipitation ends;

[0079] Automatic water discharge: open the fifth electric valve F5, the sixth electric valve F6 and the tenth electric valve F10;

[0080] When the third liquid level meter Y3 reaches the reference liquid level value Y3-1, the fifth electric valve F5, the sixth electric valve F6 and the tenth electric valve F10 are closed, the aeration backwashing fan B7 and the fourth electric valve F4 are turned on, and the sand filter device starts backwashing;

[0081] When the duration is longer than the set time t4, the backwash pump B4 and the tenth electric valve F10 are turned on to wash the air and water simultaneously;

[0082] When the duration is longer than the set time t5, the aeration backwash fan B7 and the fourth electric valve F4 are turned off, and the backwash pump B4 and the tenth electric valve F10 are kept open to perform water backwashing;

[0083] When the duration reaches the set time t6, the backwash pump B4, the aeration backwash fan B7 and the fourth electric valve F4 are turned off, and the fifth electric valve F5 and the sixth electric valve F6 are opened.

[0084] When the second liquid level gauge Y2 of the anaerobic tank reaches the liquid level reference value Y2-3, the fifth electric valve F5 and the sixth electric valve F6 are closed, the set time t7 is delayed, and the tenth electric valve F10 is closed;

[0085] Time-sharing control method:

[0086] Time-sharing water inlet control: The PLC control system sets the low water level reference value Y7-1. When the PLC control system determines that the seventh liquid level gauge Y7 is higher than the low water level reference value Y7-1, the raw water pool sewage lifting pump B1 is turned on to feed water into the reaction pool, and the first electric ball valve F1 and the second electric ball valve F2 are turned on at the same time. When the second liquid level gauge Y2 of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan B7 and opens the third electric valve F3 to aerate the anaerobic tank. When the second liquid level gauge Y2 of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump B1, the first electric valve F1 and the second electric valve F2 are turned off.

[0087] Time-sharing reaction control: when the aeration time reaches t7, the reflux pump B2 and the eighth electric valve F8 are turned on; when the time reaches t8, the reflux pump B2 and the eighth electric valve F8 are turned off; when the time reaches t9, the aeration backwash fan B7 and the third electric valve F3 are turned off, and sedimentation begins;

[0088] Time-sharing sedimentation control: When the sedimentation time reaches t10, the sedimentation ends;

[0089] Time-sharing water outlet control: open the fifth electric valve F5, the sixth electric valve and the tenth electric valve F10, the sand filter device, when the third liquid level gauge Y3 reaches the reference value Y3-1, close the fifth electric valve F5, the sixth electric valve and the tenth electric valve F10, and open the aeration backwash fan B7 and the fourth electric valve F4;

[0090] When the duration reaches the set value t4, the backwash pump B4 and the tenth electric valve F10 are turned on to perform air-water simultaneous washing. When the duration reaches the set value t5, the aeration backwash fan B7 and the fourth electric valve F4 are turned off, and the backwash pump B4 and the tenth electric valve F10 are kept turned on to continue water backwashing.

[0091] When the time reaches the set value t6, the backwash pump B4, the aeration backwash fan B7 and the fourth and third electric valves F4 are turned off, and the fifth and sixth electric valves F5 and F6 are opened;

[0092] When the anaerobic tank level meter Y2 reaches the liquid level reference value Y2-3, the fifth electric valve F5 and the sixth electric valve F6 are closed, and the tenth electric valve F10 is closed after a set value t7 is delayed.

[0093] Design the winter operation mode. The process of starting the winter operation mode is the same as the debugging operation mode: when entering winter and the temperature is low, adjust the operating frequency of the aeration backwash fan B7 and the liquid level of the second liquid level gauge Y2. Always repeat the debugging operation mode when water discharge is not required.

[0094] When water is discharged from the grey water tank, the water supply pump is frequency-controlled according to the pressure of the user's grey water network. At least 3 electric valves are set to be switched on and off. When the low water level of the grey water tank liquid level gauge reaches the liquid level reference value Y4-1, the tap water inlet electric valve is opened, and it is closed when the set reference water level Y4-3 is reached. The low liquid level Y4-1 of the grey water tank is the backwash guarantee water level. The liquid level reference value Y4-2 of the grey water tank is the water level at which the grey water reuse pump can be started, and it stops when it drops to the low liquid level.

[0095] The linkage of the dosing pump, the first dosing pump B5 is linked with the raw water tank sewage lifting pump B1, and can also be controlled to start and stop according to the △PH setting; the low position of the first five liquid level gauge Y5 can control the dosing pump to stop.

[0096] The second dosing pump B6 is linked with the fifth electric valve F5, the sixth electric valve F6 and the tenth electric valve F10, and can also be manually set to start and stop. The sixth liquid level gauge Y6 can control the dosing pump to stop when it is at a low level.

[0097] Sludge removal and backwashing

[0098] Mud discharge: Control the opening of the mud discharge pump B3 and the ninth electric valve F9 according to the set duration, or introduce MLSS set value control. Considering the backwashing of the submersible sewage pump in the regulating tank, set the bottom twelve electric valves. In this application, the MLSS sludge concentration sensor M, model specification: ZDYG-2087-01QX, 12V, RS485, 0-45000mg / L accuracy 0.01mg / L, 10-meter line, with self-cleaning. The eleventh electric ball valve F11 and the twelfth electric ball valve F12 are PVC ball valves DN50, DC24VF3.

[0099] The improved CAST process distributed sewage treatment system brings many beneficial effects.

[0100] First of all, the CAST process (Cyclic Activated Sludge Technology) is a cyclic activated sludge process that uses an intermittent reactor to repeatedly operate in the aeration and non-aeration stages, concentrating the biological reaction process and the mud-water separation process in one pool. The core features of this process include its cyclicity, intermittency, and efficient biological treatment capabilities. It can effectively remove organic matter, nitrogen, phosphorus and other pollutants in wastewater, and the average effluent water quality can reach very high standards.

[0101] The distributed sewage treatment system is a decentralized sewage treatment method that distributes sewage treatment equipment to the source, achieving efficient treatment of decentralized sewage. This method reduces the tediousness and time of road transmission and avoids the transportation problem of sludge in the traditional centralized treatment mode. At the same time, the distributed sewage treatment system has appropriate sewage treatment technology and stable equipment, as well as a complete monitoring and management system, which can ensure that sewage is treated in a timely and effective manner.

[0102] Applying the improved GJ-CAST process to distributed sewage treatment systems can bring the following benefits:

[0103] Beneficial effects:

[0104] Improve treatment efficiency: The efficient biological treatment capacity of the GJ-CAST process can ensure that sewage is treated quickly and effectively, while the distributed system reduces transmission time and links, further improving the overall treatment efficiency.

[0105] Save space: The distributed sewage treatment system places sewage treatment equipment at the source of sewage, greatly reducing the occupation of ground space and making the space utilization of cities or industrial areas more reasonable.

[0106] Flexible and changeable: The design of the distributed sewage treatment system is flexible and can be adjusted and optimized according to different sewage sources and treatment requirements to achieve the best treatment effect.

[0107] Environmentally friendly and sustainable: During the treatment process, the GJ-CAST process decomposes organic matter into harmless substances through chemical oxidation and biodegradation, reducing pollution to the environment. At the same time, this technology can also recycle some practical substances in wastewater, such as nitrogen and phosphorus, for agricultural irrigation or other purposes, realizing the recycling of resources.

[0108] Reduce operating costs: The distributed sewage treatment system reduces the energy consumption and labor costs of sewage transmission. At the same time, the investment cost of the GJ-CAST process is relatively low and the operation is stable, which can reduce the overall operating costs.

[0109] In summary, the improved GJ-CAST process distributed sewage treatment system has the beneficial effects of high efficiency, space saving, flexibility, environmental protection, sustainability and reduced operating costs. It is a sewage treatment solution worthy of promotion.

[0110] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that can be thought of by ordinary technicians in this field without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A deformation process sewage treatment control system, characterized in that: The deformation process sewage treatment control system includes a carbon source supply device, a raw water tank, a middle water tank, an anoxic tank, an anaerobic tank, a sand filter device, a disinfection device, a power supply system, an analog quantity acquisition system and a PLC control system. The raw water tank is connected to the carbon source supply device, the anoxic tank and the anaerobic tank through pipelines, the sand filter device is connected to the anaerobic tank through a pipeline, the disinfection device is connected to the sand filter device and the middle water tank through a pipeline, and the sand filter device is connected to the middle water tank through a pipeline. The analog quantity acquisition system collects the liquid level information of the carbon source supply device, the raw water tank, the middle water tank, the anoxic tank, the anaerobic tank, the sand filter device and the disinfection device in real time, and sends the liquid level information to the PLC control system. The PLC control system controls the liquid supply of the carbon source supply device, the raw water tank, the middle water tank, the anoxic tank, the anaerobic tank, the sand filter device and the disinfection device and the sewage discharge of the anaerobic tank. The power supply system is used to provide power to the analog quantity acquisition system and the PLC control system.

2. The deformation process sewage treatment control system according to claim 1, characterized in that: The analog quantity acquisition system includes a first liquid level gauge, a second liquid level gauge, a third liquid level gauge, a fourth liquid level gauge, a fifth liquid level gauge, a sixth liquid level gauge and a seventh liquid level gauge. The first liquid level gauge is installed in the anoxic tank, the second liquid level gauge is installed in the anaerobic tank, the third liquid level gauge is installed in the sand filtration device, the fourth liquid level gauge is installed in the intermediate water tank, the fifth liquid level gauge is installed in the carbon source supply device, the sixth liquid level gauge is installed in the disinfection device, and the seventh liquid level gauge is installed in the raw water tank.

3. The deformation process sewage treatment control system according to claim 2, characterized in that: The PLC control system includes a raw water tank sewage lifting pump, a return pump, a sludge pump, a backwash pump, a first dosing pump, a second dosing pump and an aeration backwash fan. The raw water tank sewage lifting pump is equipped with the raw water tank, the return pump is equipped with the anaerobic tank, the sludge pump is equipped with the anaerobic tank, the backwash pump is connected to the grey water tank and the sand filter device, the first dosing pump is equipped with the carbon source supply device, the second dosing pump is equipped with the disinfection device, and the aeration backwash fan is connected to the anaerobic tank and the sand filter device.

4. The deformation process sewage treatment control system according to claim 3, characterized in that: The PLC control system includes a first electric ball valve, a second electric ball valve, a third electric ball valve, a fourth electric ball valve, a fifth electric ball valve, a sixth electric ball valve, a seventh electric ball valve, an eighth electric ball valve, a ninth electric ball valve and a tenth electric ball valve. The first electric ball valve is mounted on a pipe connecting the anoxic tank and the raw water tank, the second electric ball valve is mounted on a pipe connecting the anaerobic tank and the raw water tank, the third electric ball valve is mounted on a pipe connecting the anaerobic tank and the aeration backwashing fan, the fourth electric ball valve is mounted on a pipe connecting the sand filter device and the aeration backwashing fan, the fifth electric ball valve is mounted on a pipe connecting the anaerobic tank and the sand filter device, the sixth electric ball valve is mounted on a pipe connecting the anoxic tank and the sand filter device, the seventh electric ball valve is connected to the sand filter device through a pipe, the eighth electric ball valve is mounted on a pipe connecting the anaerobic tank and the anoxic tank, the ninth electric ball valve is mounted on a pipe connecting the anaerobic tank and the sludge pump, and the tenth electric ball valve is mounted on a pipe connecting the sand filter device, the disinfection device and the intermediate water tank.

5. The deformation process sewage treatment control system according to claim 4, characterized in that: The PLC control system includes a main control circuit and a control circuit. The main control circuit is connected to the three-phase power electricity. The A phase line, B phase line and C phase line of the main control circuit are respectively connected in parallel with the raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan. The main control circuit is connected with a manual switch button; the control circuit includes a PLC chip, and the PLC chip is electrically connected to the raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan.

6. The deformation process sewage treatment control system according to claim 5, characterized in that: The main control circuit includes a voltmeter, a first manual push button switch, a second manual push button switch, several relays, a frequency converter, an indicator light and a DC power supply. The voltmeter is connected in parallel with the A phase line and the C phase line of the three-phase line. The raw water pool sewage lifting pump is connected in series with a relay and connected in parallel with the C phase line. The sludge pump is connected in series with a relay and connected in parallel with the B phase line. The backwash pump is connected in series with a relay and connected in parallel with the A phase line. The first dosing pump is connected in series with a relay and connected in parallel with the B phase line. The second dosing pump is connected in series with a relay and connected in parallel with the B phase line. The reflux pump is connected in series with a relay and connected in parallel with the B phase line. The aeration backwash fan is connected to the frequency converter and connected to a relay. After the first manual push button switch is connected to the second manual push button switch, it is connected to the C phase line. The indicator light is connected to the C phase line. The raw water pool sewage lifting pump, the sludge pump, the backwash pump, the first dosing pump, the second dosing pump, the first manual push button switch, the second manual push button switch, the indicator light and the DC power supply are connected in parallel.

7. The deformation process sewage treatment control system according to claim 6, characterized in that: The control circuit includes a PLC chip, several current relays KA, several AC contactors KM and several switches. The COM output end of the PLC chip is connected to a switch, which is connected to the positive pole of a 24V power supply. Several switches are connected in parallel with the positive pole of the 24V power supply. Pins Y0 to Y6 of the PLC chip are respectively connected to a current relay KA, and are respectively connected to the raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan. The raw water pool sewage lifting pump, reflux pump, sludge pump, backwash pump, first dosing pump, second dosing pump and aeration backwash fan are respectively connected to an AC contactor KM and in parallel with the neutral line. Each current relay KA is connected in parallel with a 220V power supply and is respectively connected to an AC contactor KM.

8. A control method using the deformation process sewage treatment control system according to claim 7, characterized in that: The control methods for wastewater treatment by deformation process include manual control method, automatic control method or time-sharing control method; Manual control method: the PLC control system is provided with a program control system and a control interface, the control interface is connected with the corresponding control switch, and the raw water pool sewage lifting pump, the return pump, the sludge pump, the backwash pump, the first dosing pump, the second dosing pump, the aeration backwash fan, the first electric ball valve, the second electric ball valve, the third electric ball valve, the fourth electric ball valve, the fifth electric ball valve, the sixth electric ball valve, the seventh electric ball valve, the eighth electric ball valve, the ninth electric ball valve and the tenth electric ball valve are manually controlled, and the corresponding icons are clicked on the control interface to open or close; The automatic control method includes automatic control in the debugging operation stage and control in the automatic operation stage; The automatic control in the debugging and operation stage includes debugging water inlet control, adjusting reaction control, adjusting sedimentation control, and debugging water outlet control; the above process is repeated until the water quality meets the standard, and then the automatic operation mode is started; the automatic operation stage includes automatic water inlet control, automatic reaction control, automatic sedimentation stage control, and automatic water outlet control; The time-sharing control method includes time-sharing water inlet control, time-sharing reaction control, time-sharing sedimentation control and time-sharing water outlet control.

9. The deformation process wastewater treatment control method according to claim 8, characterized in that: Automatic control methods, including automatic control during the commissioning phase and control during the automatic operation phase; The automatic control during the debugging operation phase includes the following steps: Debug the water inlet control, the PLC control system sets the low water level reference value Y7-1, and the PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7-1, then the raw water pool sewage lifting pump is turned on to feed water into the reaction tank, and the first electric ball valve and the second electric ball valve are turned on at the same time; when the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan, and at the same time turns on the third electric valve to aerate the anaerobic tank, and when the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump, the first electric valve and the second electric valve are turned off; Debug reaction control. When the P / R / N value of the anaerobic tank reaches the reference value △P1 / △R1 / △N1 or the duration reaches the set value t1, turn on the return pump and the eighth electric valve. The return pump can be set to intermittent operation. When the P / R / N value of the anaerobic tank reaches the set reference value △P2 / △R2 / △N2 or the duration reaches the set duration t2, turn off the return pump and the eighth electric valve; when the P / R / N / D value of the anaerobic tank reaches the set reference value △P3 / △R3 / △N3 / △D1, turn off the aeration backwash fan and enter the sedimentation stage; Debug sedimentation control: when the duration reaches the set duration t3 or M is lower than M1, the sedimentation ends; debug water outlet control: open the sixth electric valve and the seventh electric valve, and when the second liquid level gauge of the anaerobic tank reaches the set reference value Y2-3, close the sixth electric valve and the seventh electric valve; repeat the above process until the water quality meets the standard, and then start the automatic operation mode; Automatic operation stage: turn on the automatic operation mode, automatic water inlet control, the PLC control system sets the low water level reference value Y7-1, the PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7-1, then turn on the raw water pool sewage lift pump to feed water into the reaction tank, and at the same time turn on the first electric ball valve and the second electric ball valve; when the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan, and at the same time turns on the third electric valve to aerate the anaerobic tank, and when the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, turn off the raw water pool sewage lift pump, the first electric valve and the second electric valve; The PLC control system sets a low water level reference value Y7-1. When the PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7-1, the raw water pool sewage lifting pump is turned on to feed water into the reaction pool, and the first electric ball valve and the second electric ball valve are turned on at the same time. When the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan and turns on the third electric valve to aerate the anaerobic tank. When the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump, the first electric valve and the second electric valve are turned off. Automatic reaction control: When the P / R / N value of the anaerobic tank reaches the reference value △P1 / △R1 / △N1 or the duration is longer than the set time t1, the return pump and the eighth electric valve are turned on. The return pump can be set to intermittent operation time t10 and stop time t11. When the P / R / N value of the anaerobic tank reaches the reference value △P2 / △R2 / △N2 or the duration reaches the set time t2, the return pump and the eighth electric valve are turned off; when the P / R / N / D value of the anaerobic tank reaches the reference value △P3 / △R3 / △N3 / △D1, the aeration backwash fan B7 is turned off to enter the sedimentation stage; Automatic precipitation stage: When t3 is reached or M is lower than M1, precipitation ends; Automatic water outlet control: open the fifth electric valve, the sixth electric valve and the tenth electric valve; When the third liquid level gauge reaches the reference liquid level value Y3-1, the fifth electric valve, the sixth electric valve and the tenth electric valve are closed, the aeration backwashing fan and the fourth electric valve are turned on, and the sand filter device starts backwashing; When the duration is longer than the set time t4, the backwash pump and the tenth electric valve are turned on for air and water washing; when the duration is longer than the set time t5, the aeration backwash fan and the fourth electric valve are turned off, and the backwash pump and the tenth electric valve are kept turned on for water backwashing; when the duration reaches the set time t6, the backwash pump, the aeration backwash fan and the fourth electric valve are turned off, and the fifth electric valve and the sixth electric valve are turned on; When the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-3, the fifth electric valve and the sixth electric valve are closed, the set time is delayed, and the tenth electric valve is closed; Time-sharing water inlet control: The PLC control system sets the low water level reference value Y7-1. When the PLC control system determines that the seventh liquid level gauge is higher than the low water level reference value Y7-1, the raw water pool sewage lifting pump is turned on to feed water into the reaction pool, and the first electric ball valve and the second electric ball valve are turned on at the same time. When the second liquid level gauge of the anaerobic tank reaches the reference value Y2-1, the PLC control system starts the aeration backwash fan and opens the third electric valve to aerate the anaerobic tank. When the second liquid level gauge of the anaerobic tank reaches the liquid level reference value Y2-2, the raw water pool sewage lifting pump, the first electric valve and the second electric valve are turned off. Time-sharing reaction control: when the aeration time reaches t7, the reflux pump and the eighth electric valve are turned on; when the time reaches t8, the reflux pump and the eighth electric valve are turned off; when the time reaches t9, the aeration backwash fan and the third electric valve are turned off, and sedimentation begins; Time-sharing precipitation: When the precipitation time reaches t10, the precipitation ends; Time-sharing water discharge: open the fifth electric valve, the sixth electric valve and the tenth electric valve, the sand filter device, when the third liquid level gauge reaches the reference value Y3-1, close the fifth electric valve, the sixth electric valve and the tenth electric valve, and open the aeration backwash fan and the fourth electric valve; when the time reaches the set value t4, open the backwash pump and the tenth electric valve, and perform air-water washing; when the time reaches the set value t5, close the aeration backwash fan and the fourth and third electric valves, keep the backwash pump and the tenth electric valve open, and continue water backwashing; when the time reaches the set value t6, close the backwash pump, the aeration backwash fan and the fourth electric valve, and open the fifth electric valve and the sixth electric valve; when the anaerobic tank level gauge reaches the liquid level reference value Y2-3, close the fifth electric valve and the sixth electric valve, and delay the set value to close the tenth electric valve.

10. The deformation process wastewater treatment control method according to claim 9, characterized in that: The program control system of the PLC control system is designed for winter operation mode. The process of starting the winter operation mode is the same as the debugging operation mode: in winter, when the temperature is low, adjust the operating frequency of the fan aeration backwash fan and the second liquid level gauge liquid level. When water is not needed, always repeat the debugging operation mode; When the water is discharged from the grey water tank, the water supply pump is controlled by frequency conversion according to the pressure of the user's grey water network. At least 3 electric valves are set to be switched on and off. When the low water level of the grey water tank liquid level gauge reaches the liquid level reference value Y4-1, the tap water inlet electric valve is opened, and it is closed when the set reference water level Y4-3 is reached; the low liquid level Y4-1 of the grey water tank is the backwash guarantee water level; the liquid level reference value Y4-2 of the grey water tank is the water level at which the grey water reuse pump can be started, and it stops when it drops to the low liquid level; The linkage of the dosing pump, the first dosing pump of the carbon source is linked with the sewage lifting pump of the raw water pool, and can also be controlled to start and stop according to the △PH setting; the low position of the liquid level gauge can control the dosing pump to stop; the second dosing pump of disinfection is linked with the sixth electric valve and the tenth electric valve of the water outlet, and can also be manually set to control the start and stop separately. The low position of the sixth liquid level gauge can control the first dosing pump to stop; Sludge discharge and backwashing, sludge discharge: control the opening of the sludge pump and the ninth electric valve according to the set duration, or introduce MLSS set value control, consider the backwashing of the submersible sewage pump in the regulating tank, and set the twelfth electric valve.

Images