Wastewater purification equipment for wastewater treatment

Abstract

This invention discloses a wastewater purification treatment device for wastewater treatment, belonging to the field of wastewater treatment technology. The device includes a regulating tank, a coagulation and flocculation tank, and a sedimentation tank connected in sequence. The sedimentation tank is connected to an outlet channel and an outlet pipe. The regulating tank is equipped with an inlet pipe, a neutralization reaction tank, a first mixer, a first dosing machine, an aerator, and a pH sensor. The pH sensor controls the addition of chemicals and the transport of wastewater. The coagulation and flocculation tank is divided into a mixing zone, a baffle zone, and a transition zone. The baffles are staggered with flow outlets to extend the wastewater path. The sedimentation tank has an inverted frustum-shaped bottom, a sludge discharge port, a sludge scraper, an inclined plate clarifier, and a water collection tank. A fourth baffle forms a clarification zone, and the water collection tank is connected to the outlet channel. This device can efficiently complete wastewater neutralization, coagulation and flocculation, and sedimentation purification, ensuring stable effluent pH, high floc quality, and thorough solid-liquid separation, improving wastewater purification efficiency and effluent water quality stability. It is suitable for various wastewater treatment scenarios.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and more specifically to a wastewater purification and treatment device for wastewater treatment. Background Technology

[0002] In the wastewater treatment process, wastewater purification is a crucial step, and its treatment effect directly affects the final effluent quality. Currently, traditional wastewater purification equipment has several shortcomings: Firstly, the quality of incoming wastewater fluctuates significantly, and the neutralization reaction stage often suffers from inaccurate addition of neutralizing agents and insufficient mixing, resulting in long neutralization reaction times, low efficiency, and difficulty in stabilizing the effluent pH within the specified range, affecting subsequent treatment processes. Secondly, the coagulation and flocculation stages often employ a single stirring structure, resulting in a short flow path after the wastewater and agents are mixed, insufficient time for floc growth and aggregation, difficulty in forming large floc particles, and low solid-liquid separation efficiency. Furthermore, the sedimentation stage often uses flat-bottomed sedimentation tanks, where sludge easily accumulates at the bottom, and the limited sedimentation area leads to low sedimentation efficiency, high effluent turbidity, and increased burden on subsequent treatment processes.

[0003] In view of the problems existing in the above-mentioned technologies, there is an urgent need to design a sewage purification and treatment equipment that can achieve precise neutralization, efficient coagulation and flocculation, and sufficient sedimentation, so as to improve the sewage purification efficiency and the stability of effluent quality. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a sewage purification treatment device for wastewater treatment, so as to solve the problems mentioned in the background art.

[0005] According to one aspect of this application, a wastewater purification treatment device for wastewater treatment includes an equalization tank, a coagulation and flocculation tank, and a sedimentation tank, wherein the equalization tank, the coagulation and flocculation tank, and the sedimentation tank are connected in sequence from front to back; an outlet channel is connected to the rear end of the sedimentation tank, and an outlet pipe is connected to the side wall of the outlet channel.

[0006] The regulating tank is connected to an inlet pipe at its front end. A neutralization reaction tank is located in the regulating tank corresponding to the inlet pipe. The inlet pipe is connected to the neutralization reaction tank. A first stirrer is located in the neutralization reaction tank. A first dosing machine is located above the neutralization reaction tank. An outlet is located on the upper part of the side of the neutralization reaction tank away from the inlet pipe. The outlet is connected to the regulating tank. A drain pipe is connected to the bottom of the neutralization reaction tank and faces the regulating tank. A control valve is located on the drain pipe.

[0007] The bottom of the equalization tank is equipped with an aerator, and the top of the equalization tank is equipped with a fourth mounting plate. Several pH sensors are arranged along the length of the fourth mounting plate, and the detection probes of each pH sensor extend into the outlet of the equalization tank. Several water pumps are installed at the top of the connection between the equalization tank and the coagulation and flocculation tank. The pumping end of the water pump extends into the bottom of the equalization tank, and the outlet end extends into the coagulation and flocculation tank. The pH sensors are electrically connected to the water pumps and the first dosing pump of the first dosing machine, respectively.

[0008] The coagulation and flocculation tank is provided with a stirring zone, a baffle zone and a transition zone in sequence from front to back, and the three are connected in sequence; a second mixer is provided in the stirring zone, and a second dosing machine is provided above the stirring zone; a number of baffles are provided along the length of the baffle zone, and a flow port is provided between the end of each baffle and the side wall of the baffle zone, and the flow ports of adjacent baffles are staggered.

[0009] The bottom of the sedimentation tank is designed as an inverted frustum shape, with a sludge discharge port at the center of the inverted frustum shape. The sludge discharge port is connected to a sludge pump via a pipeline. From bottom to top, the sedimentation tank is equipped with a sludge scraper, an inclined plate clarifier, and a water collection trough. A fourth baffle is vertically installed inside the sedimentation tank, forming a clarification zone with the inner wall of the sedimentation tank. The inclined plate clarifier is located in the middle of the clarification zone. The water collection trough is located above the clarification zone and is horizontally arranged. One end of each water collection trough is connected to the outlet channel, and the top of each water collection trough is provided with a continuous toothed groove.

[0010] Preferably, the stirring zone and the baffle zone are separated by a first partition, the bottom of which has a first slot; the baffle zone and the transition zone are separated by a second partition, the bottom of which has a second slot; and the transition zone and the sedimentation tank are separated by a third partition, the top of which has a third slot.

[0011] Preferably, the first mixer includes a first motor, a first stirring shaft, and a first stirring blade; the top of the neutralization reaction tank is provided with a first mounting plate, the middle of the first mounting plate is provided with a first motor, the output shaft of the first motor is fixedly connected to the upper end of the first stirring shaft, the first stirring shaft extends vertically into the neutralization reaction tank, and the lower end of the first stirring shaft is provided with a first stirring blade.

[0012] Preferably, the first dosing machine includes a first dosing pump, a first inlet pipe, and a first outlet pipe; the first dosing pump is mounted on a first mounting plate, the inlet of the first dosing pump is connected to a supply tank through the first inlet pipe, and the outlet of the first dosing pump is connected to a neutralization reaction tank through the first outlet pipe.

[0013] Preferably, the second mixer includes a second motor, a second stirring shaft, and a second stirring blade; a second mounting plate is provided at the top of the stirring zone, a second motor is provided in the middle of the second mounting plate, the output shaft of the second motor is fixedly connected to the upper end of the second stirring shaft, the second stirring shaft extends vertically into the stirring zone, and a second stirring blade is provided horizontally at the lower end of the second stirring shaft.

[0014] Preferably, the second dosing machine includes a second dosing pump, a second inlet pipe, and a second outlet pipe; the second dosing pump is mounted on a second mounting plate, the inlet of the second dosing pump is connected to a supply tank through the second inlet pipe, and the outlet of the second dosing pump is connected to a stirring zone through the second outlet pipe.

[0015] Preferably, the sludge scraper includes a third motor, a third stirring shaft, and sludge scraping blades; a third mounting plate is provided at the top of the sedimentation tank, a third motor is provided on the third mounting plate, the output shaft of the third motor is fixedly connected to the upper end of the third stirring shaft, the third stirring shaft extends vertically into the sedimentation tank, and sludge scraping blades are provided horizontally at the lower end of the third stirring shaft, with the bottom of the sludge scraping blades fitting against the inverted frustum-shaped bottom surface.

[0016] Preferably, the fourth partition has a fourth slot at its bottom, which is located above the sludge scraper blade; a gap is provided between the fourth partition and the third partition, which forms an inlet for sewage to enter the clarification zone.

[0017] Preferably, the number of baffles in the deflection zone is three to five, and the spacing between adjacent baffles is equal.

[0018] Preferably, the number of water collection tanks in the upper part of the clarification zone is two to four, and the distance between adjacent water collection tanks is equal; the number of mud scraper blades is two, and they are symmetrically arranged at the lower end of the third stirring shaft.

[0019] The advantages of this application compared to existing technologies are as follows: This wastewater purification treatment equipment, by setting up a neutralization reaction tank, a first mixer, and a first dosing machine within the equalization tank, and cooperating with the automatic control of a pH sensor, achieves precise addition of neutralizing agents and thorough mixing with wastewater, shortening the neutralization reaction time while ensuring the effluent pH value remains stable within the specified range, thus solving the problems of low neutralization efficiency and unstable pH value in traditional equipment. The coagulation and flocculation tank is divided into a mixing zone, a baffle zone, and a transition zone. The mixing zone ensures thorough mixing of the agents and wastewater; the baffle zone extends the wastewater path through staggered baffles to promote floc growth; and the transition zone stabilizes the water flow, significantly improving floc quality and solid-liquid separation efficiency, and reducing effluent turbidity. The sedimentation tank uses an inverted frustum-shaped bottom surface combined with a sludge scraper to prevent sludge accumulation and facilitate discharge. The inclined plate clarifier increases the sedimentation area and improves separation efficiency. The continuous toothed grooves of the water collection tank ensure smooth collection of clean water, ultimately guaranteeing effluent quality and reducing the burden of subsequent treatment. Attached Figure Description

[0020] Figure 1 This is a perspective view of a wastewater purification treatment device for wastewater treatment according to an embodiment of this application.

[0021] Figure 2 This is a top view of a wastewater purification treatment device for wastewater treatment according to an embodiment of this application.

[0022] Figure 3 This is a main sectional view of a wastewater purification treatment device for wastewater treatment according to an embodiment of this application.

[0023] Figure 4 This is a perspective sectional view of a wastewater purification treatment device for wastewater treatment according to an embodiment of this application.

[0024] Attached reference numerals: 1. Equalization tank; 2. Coagulation and flocculation tank; 201. Mixing zone; 202. Baffle zone; 203. Transition zone; 3. Sedimentation tank; 4. Neutralization reaction tank; 5. First mixer; 501. First motor; 502. First mixing shaft; 503. First mixing blade; 6. First dosing machine; 601. First dosing pump; 602. First inlet pipe; 603. First outlet pipe; 7. Second mixer; 701. Second motor; 702. Second mixing shaft; 703. Second mixing blade; 8. Second dosing machine; 801. Second dosing pump; 802. Second inlet pipe; 803. Second outlet pipe; 9. Sludge scraper; 901. Third motor; 90 2. Third stirring shaft; 903. Sludge scraper blade; 10. Water inlet pipe; 11. Aerator; 12. pH sensor; 13. Water pump; 14. Inclined plate clarifier; 15. Water collection tank; 16. Sludge discharge port; 17. Sludge pump; 18. Water outlet channel; 19. Water outlet pipe; 20. First mounting plate; 21. Outlet slot; 22. Drain pipe; 23. Control valve; 24. Second mounting plate; 25. First baffle; 26. First slot; 27. Baffle plate; 28. Second baffle; 29. ​​Second slot; 30. Third baffle; 31. Third slot; 32. Third mounting plate; 33. Fourth baffle; 34. Fourth slot; 35. Clarification zone; 36. Fourth mounting plate. Detailed Implementation

[0025] To make the content of this application easier to understand, the appendices in the embodiments of this application will be described below. Figure 1-4 The technical solutions in the embodiments of this application will be clearly and completely described. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the appendix. Figure 3In this context, the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, terms such as "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0026] like Figures 1-4 As shown, a wastewater purification treatment device for wastewater treatment includes an equalization tank 1, a coagulation and flocculation tank 2, and a sedimentation tank 3. The equalization tank 1, the coagulation and flocculation tank 2, and the sedimentation tank 3 are connected sequentially from front to back to ensure that wastewater can flow through each treatment unit in sequence. An outlet channel 18 is connected to the rear end of the sedimentation tank 3, and an outlet pipe 19 is connected to the side wall of the outlet channel 18. The purified water is discharged through the outlet pipe 19.

[0027] An inlet pipe 10 is connected to the front end of the equalization tank 1, through which wastewater enters the equipment. A neutralization reaction tank 4 is located within the equalization tank 1, corresponding to the inlet pipe 10. The inlet pipe 10 is connected to the neutralization reaction tank 4, and the wastewater first enters the neutralization reaction tank 4 for neutralization treatment. A first mixer 5 is installed inside the neutralization reaction tank 4, and a first dosing machine 6 is located above it. The first dosing machine 6 is used to add neutralizing agents, and the first mixer 5 is used to promote the mixing and reaction of the agents with the wastewater. An outlet 21 is located on the upper part of the neutralization reaction tank 4 away from the inlet pipe 10, connected to the equalization tank 1. The neutralized wastewater enters the equalization tank 1 through the outlet 21. A drain pipe 22 is connected to the bottom of the neutralization reaction tank 4, facing the equalization tank 1. A control valve 23 is installed on the drain pipe 22; when residual wastewater needs to be discharged from the neutralization reaction tank 4, the control valve 23 is opened.

[0028] An aerator 11 is installed at the bottom of the equalization tank 1 to aerate the wastewater and improve its biodegradability. A fourth mounting plate 36 is installed at the top of the equalization tank 1, and several pH sensors 12 are installed along its length on the fourth mounting plate 36. The detection probes of each pH sensor 12 extend into the outlet of the equalization tank 1 to detect the pH value of the wastewater at the outlet of the equalization tank 1 in real time. Several water pumps 13 are installed at the top of the connection between the equalization tank 1 and the coagulation and flocculation tank 2. The pumping end of the water pump 13 extends into the bottom of the equalization tank 1, and the outlet end extends into the coagulation and flocculation tank 2 to transport wastewater that meets the pH requirements from the equalization tank 1 to the coagulation and flocculation tank 2. The pH sensors 12 are electrically connected to the water pumps 13 and the first dosing pump 601 of the first dosing machine 6: if the pH value is not within the specified range, the pH sensor 12 adjusts the input power of the first dosing pump 601 to change the dosage of the chemical; if the pH value meets the requirements, the water pump 13 is started to transport the wastewater.

[0029] The coagulation and flocculation tank 2 is arranged sequentially from front to back as a mixing zone 201, a baffle zone 202, and a transition zone 203, all of which are interconnected, allowing wastewater to flow through each zone in sequence. A second mixer 7 is installed in the mixing zone 201, and a second dosing machine 8 is located above it. The second dosing machine 8 is used to add coagulant and flocculant, while the second mixer 7 promotes thorough mixing and reaction between the chemicals and the wastewater. Several baffle plates 27 are arranged along the length of the baffle zone 202, each with a flow opening between its end and the side wall of the baffle zone 202. The flow openings of adjacent baffle plates 27 are staggered. This design extends the flow path of the wastewater, providing sufficient time for floc growth and aggregation, and improving the quality of floc formation.

[0030] The bottom of the sedimentation tank 3 is designed with an inverted frustum shape, and a sludge discharge port 16 is located at the center of the inverted frustum shape. The sludge discharge port 16 is connected to a sludge pump 17 through a pipeline. The inverted frustum shape facilitates the accumulation of sludge at the sludge discharge port 16, which is then discharged by the sludge pump 17. From bottom to top, the sedimentation tank 3 is equipped with a sludge scraper 9, an inclined plate clarifier 14, and a water collection tank 15: the sludge scraper 9 scrapes the sludge settled at the bottom of the tank to the sludge discharge port 16, preventing sludge accumulation; the inclined plate clarifier 14 increases the sedimentation area and improves the solid-liquid separation efficiency; and the water collection tank 15 collects the purified water. A fourth baffle 33 is vertically installed inside the sedimentation tank 3. The fourth baffle 33 and the inner wall of the sedimentation tank 3 form a clarification zone 35. The inclined plate clarifier 14 is located in the middle of the clarification zone 35, where the wastewater completes the final solid-liquid separation. The water collection tank 15 is located above the clarification zone 35 and is horizontally arranged. One end of each water collection tank 15 is connected to the water outlet channel 18. The top of each water collection tank 15 is provided with a continuous toothed groove, which facilitates the smooth flow of clear water from the upper part of the clarification zone 35 into the water collection tank 15, and then discharges it through the water outlet channel 18 and the water outlet pipe 19.

[0031] In one embodiment, the mixing zone 201 and the baffle zone 202 are separated by a first partition 25. The bottom of the first partition 25 is provided with a first slot 26, through which sewage flows from the mixing zone 201 into the baffle zone 202. The baffle zone 202 and the transition zone 203 are separated by a second partition 28. The bottom of the second partition 28 is provided with a second slot 29, through which sewage flows from the baffle zone 202 into the transition zone 203. The transition zone 203 and the sedimentation tank 3 are separated by a third partition 30. The top of the third partition 30 is provided with a third slot 31. The transition zone 203 can stabilize the sewage flow, and the stabilized sewage flows into the sedimentation tank 3 through the third slot 31.

[0032] In one embodiment, the first mixer 5 includes a first motor 501, a first stirring shaft 502, and a first stirring blade 503. A first mounting plate 20 is provided at the top of the neutralization reaction tank 4, and the first motor 501 is located in the middle of the first mounting plate 20. The output shaft of the first motor 501 is fixedly connected to the upper end of the first stirring shaft 502. The first stirring shaft 502 extends vertically into the neutralization reaction tank 4, and the first stirring blade 503 is horizontally provided at the lower end of the first stirring shaft 502. Starting the first motor 501 drives the first stirring shaft 502 and the first stirring blade 503 to rotate, achieving thorough mixing of the neutralizing agent and wastewater, and shortening the neutralization reaction time.

[0033] In one embodiment, the first dosing machine 6 includes a first dosing pump 601, a first inlet pipe 602, and a first outlet pipe 603. The first dosing pump 601 is mounted on the first mounting plate 20. The inlet of the first dosing pump 601 is connected to a supply tank via the first inlet pipe 602, and the outlet of the first dosing pump 601 is connected to the neutralization reaction tank 4 via the first outlet pipe 603. Activating the first dosing pump 601 allows the neutralizing agent in the supply tank to be injected into the neutralization reaction tank 4 via the first inlet pipe 602 and the first outlet pipe 603, achieving precise agent addition.

[0034] In one embodiment, the second mixer 7 includes a second motor 701, a second mixing shaft 702, and second mixing blades 703. A second mounting plate 24 is provided at the top of the mixing zone 201, and the second motor 701 is located in the middle of the second mounting plate 24. The output shaft of the second motor 701 is fixedly connected to the upper end of the second mixing shaft 702. The second mixing shaft 702 extends vertically into the mixing zone 201, and the second mixing blades 703 are horizontally provided at the lower end of the second mixing shaft 702. Starting the second motor 701 drives the second mixing shaft 702 and the second mixing blades 703 to rotate, promoting thorough mixing and reaction of the coagulant, flocculant, and wastewater.

[0035] In one embodiment, the second dosing machine 8 includes a second dosing pump 801, a second inlet pipe 802, and a second outlet pipe 803. The second dosing pump 801 is mounted on the second mounting plate 24. The inlet of the second dosing pump 801 is connected to a supply tank via the second inlet pipe 802, and the outlet of the second dosing pump 801 is connected to the mixing zone 201 via the second outlet pipe 803. Activating the second dosing pump 801 allows the coagulant and flocculant in the supply tank to be injected into the mixing zone 201 via the second inlet pipe 802 and the second outlet pipe 803, achieving precise dosing.

[0036] In one embodiment, the sludge scraper 9 includes a third motor 901, a third stirring shaft 902, and scraper blades 903. A third mounting plate 32 is provided at the top of the sedimentation tank 3, and the third motor 901 is mounted on the third mounting plate 32. The output shaft of the third motor 901 is fixedly connected to the upper end of the third stirring shaft 902. The third stirring shaft 902 extends vertically into the sedimentation tank 3, and the lower end of the third stirring shaft 902 is horizontally equipped with scraper blades 903, the bottom of which is in contact with an inverted frustum-shaped bottom surface. Starting the third motor 901 drives the third stirring shaft 902 and the scraper blades 903 to rotate. The scraper blades 903, in contact with the bottom of the tank, scrape the sludge to the sludge discharge port 16, improving sludge discharge efficiency.

[0037] In one embodiment, the fourth partition 33 has a fourth slot 34 at its bottom, which is located above the sludge scraper blade 903, so that the wastewater after some sludge removal can enter the clarification zone 35. There is a gap between the fourth partition 33 and the third partition 30, which forms the inlet for the wastewater to enter the clarification zone 35, ensuring that the wastewater can flow smoothly into the clarification zone 35 for solid-liquid separation.

[0038] In one embodiment, the number of baffles 27 in the baffle zone 202 is three to five, and the spacing between adjacent baffles 27 is equal. This arrangement can ensure that the sewage flow path is extended while avoiding excessive sewage flow resistance and ensuring treatment efficiency.

[0039] In one embodiment, the number of water collection tanks 15 in the upper part of the clarification zone 35 is two to four, and the distance between adjacent water collection tanks 15 is equal, which can ensure the uniformity of clear water collection and improve the water discharge efficiency; the number of sludge scraper blades 903 is two, and they are symmetrically arranged at the lower end of the third stirring shaft 902, which can improve the uniformity and efficiency of sludge scraping.

[0040] Working principle: Wastewater first flows into the neutralization reaction tank 4 through the inlet pipe 10. The first dosing pump 601 of the first dosing machine 6 is started, and the neutralizing agent is injected into the neutralization reaction tank 4 through the first inlet pipe 602 and the first outlet pipe 603. At the same time, the first motor 501 of the first agitator 5 is started, and the first agitator shaft 502 drives the first agitator blades 503 to rotate, so that the neutralizing agent and wastewater are fully mixed and reacted. The neutralized wastewater enters the equalization tank 1 through the outlet 21. If it is necessary to discharge the residual wastewater in the neutralization reaction tank 4, the control valve 23 on the drain pipe 22 can be opened.

[0041] The aerator 11 in the equalization tank 1 is started to aerate the sewage. At the same time, the pH sensor 12 monitors the pH value of the sewage at the outlet of the equalization tank 1 in real time. If the pH value does not reach the specified range, the pH sensor 12 adjusts the input power of the first dosing pump 601 to adjust the dosage of the chemical. If the pH value meets the requirements, the pH sensor 12 starts the water pump 13 to pump the sewage in the equalization tank 1 to the mixing zone 201 of the coagulation and flocculation tank 2.

[0042] After the wastewater enters the mixing zone 201, the second dosing pump 801 of the second dosing machine 8 is started, and the coagulant and flocculant are injected into the mixing zone 201 through the second inlet pipe 802 and the second outlet pipe 803. At the same time, the second motor 701 of the second mixer 7 is started, and the second mixing shaft 702 drives the second mixing blades 703 to rotate, so that the agents and wastewater are fully mixed and reacted. The reacted wastewater flows into the baffle zone 202 through the first slot 26 at the bottom of the first baffle 25. Under the action of the staggered baffles 27, the wastewater extends its flow path along the flow outlet, and the flocs grow and aggregate fully. Then the wastewater flows into the transition zone 203 through the second slot 29 at the bottom of the second baffle 28. After the water flow stabilizes, it flows into the sedimentation tank 3 through the third slot 31 at the top of the third baffle 30.

[0043] After entering the sedimentation tank 3, the wastewater first flows through the inlet between the fourth baffle 33 and the third baffle 30 to the bottom of the sludge scraper 9, where heavier sludge settles to the inverted frustum-shaped bottom. The third motor 901 of the sludge scraper 9 is started, and the scraper blades 903 scrape the sludge to the sludge discharge port 16 by adhering to the bottom of the tank. The sludge pump 17 is then started to discharge the sludge. After removing some of the sludge, the wastewater enters the clarification zone 35 through the fourth slot 34 at the bottom of the fourth baffle 33, where solid-liquid separation is completed under the action of the inclined plate clarifier 14. The purified water rises to the upper part of the clarification zone 35 and flows into the collection tank 15 through the continuous toothed groove at the top of the collection tank 15. It is then discharged through the outlet channel 18 and the outlet pipe 19, completing the entire wastewater purification process.

[0044] The above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, without departing from the spirit and scope defined by the claims of this application.

Claims

1. A wastewater purification treatment device for wastewater treatment, characterized in that, It includes an equalization tank (1), a coagulation and flocculation tank (2) and a sedimentation tank (3), which are connected in sequence from front to back; the sedimentation tank (3) is connected to an outlet channel (18) at its rear end, and an outlet pipe (19) is connected to the side wall of the outlet channel (18). The regulating tank (1) is connected to the front end of the water inlet pipe (10). The regulating tank (1) is connected to the neutralization reaction tank (4) at the position corresponding to the water inlet pipe (10). The water inlet pipe (10) is connected to the neutralization reaction tank (4). The neutralization reaction tank (4) is connected to the first stirrer (5). The neutralization reaction tank (4) is connected to the top of the neutralization reaction tank (4). The neutralization reaction tank (4) is connected to the upper part of the side away from the water inlet pipe (10) by the outlet trough (21). The outlet trough (21) is connected to the regulating tank (1). The bottom of the neutralization reaction tank (4) is connected to the drain pipe (22) facing the regulating tank (1). The drain pipe (22) is connected to the control valve (23). The regulating tank (1) is equipped with an aerator (11) at the bottom and a fourth mounting plate (36) at the top. Several pH sensors (12) are provided on the fourth mounting plate (36) along the length direction. The detection probes of each pH sensor (12) extend into the outlet of the regulating tank (1). Several water pumps (13) are provided at the top of the connection between the regulating tank (1) and the coagulation and flocculation tank (2). The pumping end of the water pump (13) extends into the bottom of the regulating tank (1) and the outlet end extends into the coagulation and flocculation tank (2). The pH sensors (12) are electrically connected to the water pump (13) and the first dosing pump (601) of the first dosing machine (6). The coagulation and flocculation tank (2) is provided with a stirring zone (201), a baffle zone (202) and a transition zone (203) in sequence from front to back, and the three are connected in sequence; a second mixer (7) is provided in the stirring zone (201), and a second dosing machine (8) is provided above the stirring zone (201); a number of baffle plates (27) are provided along the length direction in the baffle zone (202), and a flow port is provided between the end of each baffle plate (27) and the side wall of the baffle zone (202), and the flow ports of adjacent baffle plates (27) are staggered; The bottom of the sedimentation tank (3) is set as an inverted frustum-shaped bottom surface, and a sludge discharge port (16) is provided at the center of the inverted frustum-shaped bottom surface. The sludge discharge port (16) is connected to a sludge pump (17) through a pipeline. The sedimentation tank (3) is provided with a sludge scraper (9), an inclined plate clarifier (14) and a water collection tank (15) in sequence from bottom to top. The sedimentation tank (3) is provided with a fourth partition (33) vertically, and the fourth partition (33) and the inner side wall of the sedimentation tank (3) form a clarification zone (35). The inclined plate clarifier (14) is located in the middle of the clarification zone (35). The water collection tank (15) is located above the clarification zone (35) and is set horizontally. One end of each water collection tank (15) is connected to the outlet channel (18), and the top of each water collection tank (15) is provided with a continuous toothed groove.

2. The wastewater purification treatment equipment for wastewater treatment according to claim 1, characterized in that, The stirring zone (201) and the baffle zone (202) are separated by a first partition (25), and the bottom of the first partition (25) is provided with a first slot (26); the baffle zone (202) and the transition zone (203) are separated by a second partition (28), and the bottom of the second partition (28) is provided with a second slot (29); the transition zone (203) and the sedimentation tank (3) are separated by a third partition (30), and the top of the third partition (30) is provided with a third slot (31).

3. The wastewater purification treatment equipment for wastewater treatment according to claim 1, characterized in that, The first mixer (5) includes a first motor (501), a first stirring shaft (502) and a first stirring blade (503); the top of the neutralization reaction tank (4) is provided with a first mounting plate (20), the first motor (501) is provided in the middle of the first mounting plate (20), the output shaft of the first motor (501) is fixedly connected to the upper end of the first stirring shaft (502), the first stirring shaft (502) extends vertically into the neutralization reaction tank (4), and the lower end of the first stirring shaft (502) is provided with a first stirring blade (503).

4. The wastewater purification treatment equipment for wastewater treatment according to claim 1, characterized in that, The first dosing machine (6) includes a first dosing pump (601), a first inlet pipe (602) and a first outlet pipe (603); the first dosing pump (601) is mounted on the first mounting plate (20), the inlet of the first dosing pump (601) is connected to the supply tank through the first inlet pipe (602), and the outlet of the first dosing pump (601) is connected to the neutralization reaction tank (4) through the first outlet pipe (603).

5. A wastewater purification treatment device for wastewater treatment according to claim 1, characterized in that, The second mixer (7) includes a second motor (701), a second stirring shaft (702), and a second stirring blade (703); a second mounting plate (24) is provided at the top of the stirring zone (201), and a second motor (701) is provided in the middle of the second mounting plate (24). The output shaft of the second motor (701) is fixedly connected to the upper end of the second stirring shaft (702). The second stirring shaft (702) extends vertically into the stirring zone (201), and a second stirring blade (703) is provided horizontally at the lower end of the second stirring shaft (702).

6. The wastewater purification treatment equipment for wastewater treatment according to claim 1, characterized in that, The second dosing machine (8) includes a second dosing pump (801), a second inlet pipe (802), and a second outlet pipe (803); the second dosing pump (801) is mounted on the second mounting plate (24), the inlet of the second dosing pump (801) is connected to the supply tank through the second inlet pipe (802), and the outlet of the second dosing pump (801) is connected to the stirring zone (201) through the second outlet pipe (803).

7. A wastewater purification treatment device for wastewater treatment according to claim 1, characterized in that, The sludge scraper (9) includes a third motor (901), a third stirring shaft (902), and sludge scraper blades (903); the top of the sedimentation tank (3) is provided with a third mounting plate (32), the third mounting plate (32) is provided with a third motor (901), the output shaft of the third motor (901) is fixedly connected to the upper end of the third stirring shaft (902), the third stirring shaft (902) extends vertically into the sedimentation tank (3), the lower end of the third stirring shaft (902) is provided with sludge scraper blades (903), the bottom of the sludge scraper blades (903) is in contact with the inverted frustum-shaped bottom surface, there are two sludge scraper blades (903), and they are symmetrically arranged at the lower end of the third stirring shaft (902).

8. A wastewater purification treatment device for wastewater treatment according to claim 1, characterized in that, The fourth partition (33) has a fourth slot (34) at its bottom, which is located above the sludge scraper blade (903). There is a gap between the fourth partition (33) and the third partition (30), which forms an inlet for sewage to enter the clarification zone (35).

9. A wastewater purification treatment device for wastewater treatment according to claim 1, characterized in that, The number of baffles (27) in the baffle zone (202) is three to five, and the spacing between adjacent baffles (27) is equal.

10. A wastewater purification treatment device for wastewater treatment according to claim 1, characterized in that, The number of water collection tanks (15) above the clarification zone (35) is two to four, and the distance between adjacent water collection tanks (15) is equal.

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