Wastewater treatment integrated equipment

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to wastewater treatment integrated equipment which comprises a water taking pump room, a coagulation reaction tank, a coagulation sedimentation tank, a sludge concentration tank and an auxiliary equipment room, a drainage system, a dosing system, a stirring system and a sludge scraping and conveying system are connected in the coagulation reaction tank and the coagulation sedimentation tank; a control system is integrally arranged in the auxiliary equipment room, and is electrically connected with the drainage system, the dosing system, the stirring system and the sludge scraping and conveying system respectively; according to the utility model, through highly integrated equipment layout and an intelligent control system, the cooperative operation of coagulation reaction, precipitation separation, sludge treatment and automatic control functions is realized, the wastewater treatment efficiency and the operation stability are remarkably improved, and the device is particularly suitable for pretreatment and purification treatment of various water qualities such as industrial wastewater and domestic sewage.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an integrated wastewater treatment device. Background Technology

[0002] In existing wastewater treatment technologies, traditional treatment equipment often suffers from problems such as dispersed structure, large footprint, complex connections between treatment units, and low automation. For example, coagulation reactors and sedimentation tanks are usually set up as independent devices, resulting in cumbersome piping connections, high water flow resistance, and a lack of coordinated control between the reagent dosing system and the mixing system, easily leading to reagent waste or poor flocculation effect. In addition, the sludge treatment process often suffers from low efficiency of sludge scraping equipment and unreasonable layout of sludge thickening tanks and sedimentation tanks, resulting in poor sludge return and ineffective recovery and reuse of supernatant, increasing subsequent treatment costs. At the same time, traditional equipment lacks real-time water quality monitoring and intelligent control functions, making it difficult to dynamically adjust treatment parameters according to water quality changes, affecting the stability of effluent water quality. Therefore, there is an urgent need to develop an integrated wastewater treatment equipment that is compact in structure, efficient in process, highly automated, and easy to maintain, in order to achieve high efficiency, intelligence, and energy saving in wastewater treatment. Utility Model Content

[0003] To address some of the problems existing in the prior art, this utility model provides an integrated wastewater treatment equipment. Through a highly integrated equipment layout and intelligent control system, the equipment achieves coordinated operation of coagulation reaction, sedimentation separation, sludge treatment and automatic control functions, significantly improving wastewater treatment efficiency and operational stability. It is especially suitable for the pretreatment and purification of various water qualities such as industrial wastewater and domestic sewage.

[0004] To achieve the above objectives, this utility model provides an integrated wastewater treatment equipment, including an intake pump station, a coagulation reaction tank, a coagulation sedimentation tank, a sludge thickening tank, and an auxiliary equipment room; the coagulation reaction tank and the coagulation sedimentation tank are connected and equipped with a drainage system, a dosing system, a stirring system, and a sludge scraping and conveying system; the drainage system includes a coagulation reaction tank inlet lift pump, a coagulation reaction tank inlet lift pump outlet pipe, and a coagulation reaction tank inlet lift pump inlet pipe; the intake pump station is connected to the coagulation reaction tank inlet lift pump through the coagulation reaction tank inlet lift pump inlet pipe, and the coagulation reaction tank inlet lift pump is connected to the coagulation reaction tank inlet lift pump through the coagulation reaction tank inlet lift pump. The pump outlet pipe is connected to the inlet end of the coagulation reaction tank; the coagulation reaction tank is connected to the inlet end of the coagulation sedimentation tank, and the inlet end of the coagulation sedimentation tank is provided with an outlet trough; the sludge scraping and conveying system includes a central drive sludge scraper installed in the coagulation sedimentation tank, and the sludge outlet of the central drive sludge scraper is connected to the inlet end of the sludge thickening tank; a sludge pump is installed in the auxiliary equipment room, and the sludge outlet of the sludge thickening tank is transported and processed by the sludge pump; a control system is integrated in the auxiliary equipment room, and the control system is electrically connected to the drainage system, the dosing system, the stirring system and the sludge scraping and conveying system respectively.

[0005] In operation, this invention first pumps wastewater from the intake pump station to the coagulation reaction tank, where it is transported by the coagulation reaction tank inlet pump through its inlet and outlet pipes. Then, coagulants prepared by the compound coagulant mixer and flocculants prepared by the compound flocculant mixer are added via a coagulation dosing pump, while simultaneously, an automatic PAM dosing machine replenishes the coagulation sedimentation tank with coagulant aid via a PAM dosing pump. A level sensor monitors the PAM dosing volume in real time and provides feedback to the control system. Next, the coagulation mixer and flocculant mixer sequentially agitate the wastewater in both zones, promoting the mixing and reaction of the chemicals. After the reaction, the wastewater enters the coagulation sedimentation tank. Finally, honeycomb inclined tube packing provides an inclined sedimentation channel for the wastewater, accelerating solid-liquid separation, and a centrally driven scraper removes the solids. After the sludge is collected from the bottom of the tank, it is transported to the adjacent sludge thickening tank through sludge pipelines. The bottom guide plate of the sludge thickening tank gathers the sludge to the suction port of the sludge pump, which then pumps it for processing. The sludge in the coagulation reaction tank is transported to the sludge thickening tank through the sewage pump at the bottom of the ditch. In addition, the supernatant in the upper part of the sludge thickening tank is returned to the inlet of the coagulation reaction tank through a return pipeline consisting of an external single-stage screw pump, an external single-stage screw pump inlet pipe, and an external single-stage screw pump outlet pipe. Throughout the process, the control system in the auxiliary equipment room collects water quality data in real time through an online water quality monitor and automatically adjusts the dosage of the dosing system, the stirring rate of the stirring system, and the operating parameters of each pump. At the same time, the overload protection device of the center-driven sludge scraper automatically controls the drive motor to stop running and alarms when the scraping resistance exceeds the threshold, ensuring the safe and efficient operation of the equipment.

[0006] The beneficial effects of this utility model are: through integrated design, the water intake pumping station, coagulation reaction tank, coagulation sedimentation tank, sludge thickening tank and auxiliary equipment room are integrated into a unified whole, which significantly shortens the treatment process, reduces the equipment footprint, and lowers the installation and maintenance costs. The coagulation reaction tank is divided into sections with coagulation mixers and flocculation mixers. Combined with the precise dosing of compound coagulants and flocculants, and the synergistic effect of the automatic PAM fumigation machine, it achieves efficient flocculation through multi-stage reactions, improving the removal efficiency of suspended solids. The honeycomb inclined tube packing in the coagulation sedimentation tank is angled to increase the sedimentation area and shorten the sedimentation time. Combined with the radial scraper arms of the center-driven scraper and the inclined guide surface at the bottom of the tank, it ensures efficient sludge collection and transportation. The sludge thickening tank is adjacent to the sedimentation tank. The supernatant is returned to the coagulation reaction tank via a supernatant return pipe and an external single-stage screw pump, achieving water resource recycling and reducing waste. The control system in the auxiliary equipment room integrates an online water quality monitor, which can automatically adjust the dosage of the dosing system and the stirring rate of the mixing system based on real-time water quality data from the coagulation reaction tank outlet, the sedimentation tank outlet, and the outlet of the effluent trough, achieving intelligent control of the treatment process. Furthermore, the overload protection device of the center-driven scraper further enhances the safety of equipment operation.

[0007] As a further improvement of this utility model, to avoid the long-term storage and deterioration of the agent, to achieve automatic preparation and dosing of the agent, and to enhance the aggregation and sedimentation efficiency of suspended solids, the dosing system includes a coagulation dosing pump, a compound flocculant dosing pump, and an automatic PAM dosing machine; the coagulation dosing pump and the compound flocculant dosing pump are respectively connected to the dosing port of the coagulation reaction tank, and the automatic PAM dosing machine is connected to the dosing port of the coagulation sedimentation tank through the PAM dosing pump; the dosing system also includes a compound coagulation agent mixer and a compound flocculant mixer, which are installed in the auxiliary equipment room and are used to prepare the compound coagulation agent and the compound flocculant, respectively.

[0008] As a further improvement of this utility model, in order to solve the problems of delayed or excessive dosing in traditional manual dosing and improve the accuracy and continuity of dosing; the discharge port of the compound coagulant mixer is connected to the coagulant dosing pump through a pipe, and the discharge port of the compound flocculant mixer is connected to the compound flocculant dosing pump through a pipe; the PAM automatic dosing machine is equipped with a liquid level sensor, which is connected to the control system signal, and the control system can automatically control the start and stop of the PAM dosing pump according to the liquid level signal.

[0009] As a further improvement of this utility model, in order to promote floc growth through zoned stirring, and at the same time regularly remove settled sludge to avoid short-flow phenomenon and improve reaction efficiency, the stirring system includes a coagulation mixer and a flocculation mixer installed in the coagulation reaction tank, which are arranged sequentially along the water flow direction of the coagulation reaction tank; the interior of the coagulation reaction tank is divided into a coagulation reaction zone and a flocculation reaction zone connected sequentially along the water flow direction, with the coagulation mixer installed in the coagulation reaction zone and the flocculation mixer installed in the flocculation reaction zone; a drainage pump is installed at the bottom of the coagulation reaction tank, and the outlet of the drainage pump is connected to a sludge thickening tank.

[0010] As a further improvement of this utility model, in order to improve sludge collection efficiency, increase sedimentation area, shorten particle sedimentation time, and significantly improve the surface load and treatment capacity of the sedimentation tank, the central drive scraper is set at the center of the coagulation sedimentation tank, and the scraper arms of the central drive scraper are radially distributed and in contact with the bottom of the tank; the coagulation sedimentation tank is equipped with honeycomb inclined tube packing, which is fixedly installed at an inclined angle of 60° to form an inclined sedimentation channel.

[0011] As a further improvement of this utility model, in order to shorten the sludge transport path, guide sludge aggregation, and avoid sludge dead zones, and at the same time realize water resource recycling and reduce resource waste, the sludge thickening tank and the coagulation sedimentation tank are arranged adjacent to each other and connected by a sludge pipeline. The sludge outlet of the central drive scraper is directly connected to the sludge thickening tank through the sludge pipeline. An inclined guide plate is provided at the bottom of the sludge thickening tank, and the suction port of the sludge pump is provided at the lowest point of the guide plate. A supernatant return pipe is provided at the upper part of the sludge thickening tank, and the supernatant return pipe is connected to the water inlet of the coagulation reaction tank. An external single-stage screw pump, an external single-stage screw pump inlet pipe, and an external single-stage screw pump outlet pipe are provided on the return pipe. The external single-stage screw pump is connected to the return pipeline through the external single-stage screw pump inlet pipe and the external single-stage screw pump outlet pipe.

[0012] As a further improvement of this utility model, in order to monitor the sludge scraping resistance in real time and avoid equipment damage caused by excessive sludge or foreign objects blocking it; at the same time, to guide the sludge to flow naturally towards the collection hopper and reduce the frequency of manual sludge removal; the central drive sludge scraper is equipped with an overload protection device, which is connected to the control system; the bottom of the coagulation sedimentation tank is provided with a guide slope of 3° to 5°, and the lowest point of the guide slope corresponds to the sludge collection hopper of the central drive sludge scraper.

[0013] As a further improvement of this utility model, in order to collect water quality data in real time and automatically adjust the dosage and stirring rate based on the real-time data to achieve intelligent control of the treatment process, an online water quality monitor is also installed in the auxiliary equipment room. The monitoring points of the online water quality monitor are respectively set at the outlet of the coagulation reaction tank, the outlet of the coagulation sedimentation tank, and the outlet of the effluent channel. The online water quality monitor is electrically connected to the control system, and the control system can automatically adjust the dosage of the dosing system and the stirring rate of the stirring system based on the water quality monitoring data. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings:

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 For the present utility model Figure 1 Sectional view at point AA.

[0017] The components include: 1. Coagulation mixer, 2. Flocculation mixer, 3. Center-driven sludge scraper, 4. Outlet tank, 5. Honeycomb inclined tube packing, 6. External single-stage screw pump, 7. PAM automatic dosing machine, 8. PAM dosing pump, 9. Coagulation dosing pump, 10. Sludge pump, 11. Compound flocculant dosing pump, 12. Compound coagulation mixer, 13. Compound flocculant mixer, 14. Ditch sewage pump, 15. Coagulation reaction tank inlet lift pump, 16. Water intake pump room, 17. Sludge thickening tank, 18. Auxiliary equipment room, 19. Coagulation reaction tank, 20. Coagulation reaction tank inlet lift pump outlet pipe, 21. Coagulation reaction tank inlet lift pump inlet pipe, 22. Coagulation sedimentation tank, 23. External single-stage screw pump inlet pipe, and 24. External single-stage screw pump outlet pipe. Detailed Implementation

[0018] like Figure 1-2The integrated wastewater treatment equipment shown includes an intake pump station 16, a coagulation reaction tank 19, a coagulation sedimentation tank 22, a sludge thickening tank 17, and an auxiliary equipment room 18. The coagulation reaction tank 19 and the coagulation sedimentation tank 22 are equipped with a drainage system, a dosing system, a stirring system, and a sludge scraping and conveying system. The drainage system includes a coagulation reaction tank inlet lift pump 15, a coagulation reaction tank inlet lift pump outlet pipe 20, and a coagulation reaction tank inlet lift pump inlet pipe 21. The intake pump station 16 is connected to the coagulation reaction tank inlet lift pump 15 via the coagulation reaction tank inlet lift pump inlet pipe 21, and the coagulation reaction tank inlet lift pump 15 is connected to the inlet end of the coagulation reaction tank 19 via the coagulation reaction tank inlet lift pump outlet pipe 20. The coagulation reaction tank 19 is connected to the inlet end of the coagulation sedimentation tank 22, and the inlet end of the coagulation sedimentation tank 22 is provided with an outlet trough 4; the sludge scraping and conveying system includes a central drive sludge scraper 3 installed in the coagulation sedimentation tank 22, and the sludge outlet of the central drive sludge scraper 3 is connected to the inlet end of the sludge thickening tank 17; a sludge pump 10 is installed in the auxiliary equipment room 18, and the sludge outlet of the sludge thickening tank 17 is conveyed and processed by the sludge pump 10; a control system is integrated in the auxiliary equipment room 18, and the control system is electrically connected to the drainage system, the dosing system, the stirring system and the sludge scraping and conveying system respectively; the dosing system includes a coagulation dosing pump 9, a compound flocculant dosing pump 11 and PAM automatic dosing machine 7; the coagulation dosing pump 9 and the compound flocculant dosing pump 11 are respectively connected to the dosing port of the coagulation reaction tank 19, and the PAM automatic dosing machine 7 is connected to the dosing port of the coagulation sedimentation tank 22 through the PAM dosing pump 8; the dosing system also includes a compound coagulation agent mixer 12 and a compound flocculant mixer 13, which are installed in the auxiliary equipment room 18 and are used to prepare compound coagulation agents and compound flocculants respectively; the discharge port of the compound coagulation agent mixer 12 is connected to the coagulation dosing pump 9 through a pipe, and the discharge port of the compound flocculant mixer 13 is connected to the compound flocculant dosing pump 11 through a pipe; the PAM automatic dosing machine 7 The system is equipped with a liquid level sensor, which is connected to the control system. The control system can automatically control the start and stop of the PAM dosing pump 8 based on the liquid level signal. The stirring system includes a coagulation mixer 1 and a flocculation mixer 2 installed in the coagulation reaction tank 19. The coagulation mixer 1 and the flocculation mixer 2 are arranged sequentially along the water flow direction of the coagulation reaction tank 19. The interior of the coagulation reaction tank 19 is divided into a coagulation reaction zone and a flocculation reaction zone that are connected sequentially along the water flow direction. The coagulation mixer 1 is installed in the coagulation reaction zone, and the flocculation mixer 2 is installed in the flocculation reaction zone. A drainage ditch pump 14 is installed at the bottom of the coagulation reaction tank 19, and the outlet of the drainage ditch pump 14 is connected to the sludge thickening tank 17.The centrally driven scraper 3 is positioned at the center of the coagulation sedimentation tank 22, with its scraper arms radially distributed and in contact with the bottom of the tank. The coagulation sedimentation tank 22 is equipped with honeycomb inclined tube packing 5, which is fixed at a 60° angle to form an inclined sedimentation channel. The sludge thickening tank 17 is adjacent to the coagulation sedimentation tank 22 and connected to it via a sludge pipe. The sludge outlet of the centrally driven scraper 3 is directly connected to the sludge thickening tank 17 via the sludge pipe. An inclined guide plate is installed at the bottom of the sludge thickening tank 17, with the suction inlet of the sludge pump 10 located at its lowest point. A supernatant return pipe is installed at the top of the sludge thickening tank 17, connecting to the inlet of the coagulation reaction tank 19. An external single-stage screw pump 6 is installed on the return pipe. The system includes an inlet pipe 23 and an outlet pipe 24 for an external single-stage screw pump 6. The external single-stage screw pump 6 is connected to the return pipeline via the inlet pipe 23 and the outlet pipe 24. The centrally driven sludge scraper 3 is equipped with an overload protection device, which is connected to the control system. The bottom of the coagulation sedimentation tank 22 has a guide slope with a gradient of 3° to 5°, the lowest point of which corresponds to the sludge collection hopper of the centrally driven sludge scraper 3. An online water quality monitor is also installed in the auxiliary equipment room 18. The monitoring points of the online water quality monitor are respectively located at the outlet of the coagulation reaction tank 19, the outlet of the coagulation sedimentation tank 22, and the outlet of the effluent trough 4. The online water quality monitor is electrically connected to the control system, which can automatically adjust the dosage of the dosing system and the stirring rate of the stirring system based on the water quality monitoring data.

[0019] In operation, wastewater is first pumped from the intake pump station 16 to the coagulation reaction tank 19, and then transported by the coagulation reaction tank inlet pump 15 through the coagulation reaction tank inlet pump inlet pipe 21 and the coagulation reaction tank inlet pump outlet pipe 20. Then, the coagulant prepared by the compound coagulant mixer 12 is added through the coagulation dosing pump 9, and the flocculant prepared by the compound flocculant mixer 13 is added through the compound flocculant dosing pump 11. Simultaneously, the PAM automatic dosing machine 7 supplements the coagulant aid to the coagulation sedimentation tank 22 through the PAM dosing pump 8. A liquid level sensor monitors the amount of PAM solution in the automatic dosing machine 7 in real time and provides feedback to the control system. Next, the coagulation mixer 1 and the flocculant mixer 2 sequentially stir the wastewater in both zones, promoting the mixing and reaction of the reagents with the wastewater. After the reaction, the wastewater enters the coagulation sedimentation tank 22. Afterwards, the honeycomb inclined tube packing 5 provides an inclined sedimentation channel for the wastewater, accelerating solid-liquid separation, and the centrally driven sludge scraper 3... After the sludge is collected from the bottom of the tank, it is transported to the adjacent sludge thickening tank 17 through a sludge pipeline. The bottom guide plate of the sludge thickening tank 17 gathers the sludge to the suction port of the sludge pump 10, which then transports and processes it. The coagulation reaction tank 19 transports the deposited sludge to the sludge thickening tank 17 through the bottom drainage pump 14. In addition, the supernatant in the upper part of the sludge thickening tank 17 is returned to the inlet of the coagulation reaction tank 19 through a return pipeline consisting of an external single-stage screw pump 6, an external single-stage screw pump inlet pipe 23, and an external single-stage screw pump outlet pipe 24. Throughout the process, the control system in the auxiliary equipment room 18 collects water quality data in real time through an online water quality monitor and automatically adjusts the dosage of the dosing system, the stirring rate of the stirring system, and the operating parameters of each pump. At the same time, the overload protection device of the center-driven sludge scraper 3 automatically controls the drive motor to stop running and alarms when the scraping resistance exceeds the threshold, ensuring the safe and efficient operation of the equipment.

[0020] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An integrated wastewater treatment system, comprising a water intake pumping station (16), a coagulation reaction tank (19), a coagulation sedimentation tank (22), a sludge thickening tank (17), and an auxiliary equipment room (18); characterized in that, The coagulation reaction tank (19) and the coagulation sedimentation tank (22) are equipped with a drainage system, a dosing system, a stirring system, and a sludge scraping and conveying system. The drainage system includes a coagulation reaction tank inlet pump (15), a coagulation reaction tank inlet pump outlet pipe (20), and a coagulation reaction tank inlet pump inlet pipe (21). The water intake pump house (16) is connected to the coagulation reaction tank inlet pump (15) through the coagulation reaction tank inlet pump inlet pipe (21), and the coagulation reaction tank inlet pump (15) is connected to the inlet end of the coagulation reaction tank (19) through the coagulation reaction tank inlet pump outlet pipe (20). The coagulation reaction tank (19) and the coagulation sedimentation tank (22) are connected to each other. The inlet end of the sedimentation tank (22) is connected, and the inlet end of the coagulation sedimentation tank (22) is provided with an outlet trough (4); the sludge scraping and conveying system includes a central drive sludge scraper (3) installed in the coagulation sedimentation tank (22), and the sludge outlet of the central drive sludge scraper (3) is connected to the inlet end of the sludge thickening tank (17); a sludge pump (10) is installed in the auxiliary equipment room (18), and the sludge outlet of the sludge thickening tank (17) is conveyed and treated by the sludge pump (10); a control system is integrated in the auxiliary equipment room (18), and the control system is electrically connected to the drainage system, the dosing system, the stirring system and the sludge scraping and conveying system respectively.

2. The integrated wastewater treatment equipment according to claim 1, characterized in that: The dosing system includes a coagulation dosing pump (9), a compound flocculant dosing pump (11), and a PAM automatic dosing machine (7); the coagulation dosing pump (9) and the compound flocculant dosing pump (11) are respectively connected to the dosing port of the coagulation reaction tank (19), and the PAM automatic dosing machine (7) is connected to the dosing port of the coagulation sedimentation tank (22) through the PAM dosing pump (8); the dosing system also includes a compound coagulation mixer (12) and a compound flocculant mixer (13), the compound coagulation mixer (12) and the compound flocculant mixer (13) are set in the auxiliary equipment room (18) and are respectively used to prepare compound coagulation agent and compound flocculant.

3. The integrated wastewater treatment equipment according to claim 2, characterized in that: The outlet of the compound coagulant mixer (12) is connected to the coagulant dosing pump (9) through a pipe, and the outlet of the compound flocculant mixer (13) is connected to the compound flocculant dosing pump (11) through a pipe; the PAM automatic dosing machine (7) is equipped with a liquid level sensor, which is connected to the control system signal. The control system can automatically control the start and stop of the PAM dosing pump (8) according to the liquid level signal.

4. The integrated wastewater treatment equipment according to claim 1, characterized in that: The stirring system includes a coagulation mixer (1) and a flocculation mixer (2) installed in the coagulation reaction tank (19). The coagulation mixer (1) and the flocculation mixer (2) are arranged sequentially along the water flow direction of the coagulation reaction tank (19). The interior of the coagulation reaction tank (19) is divided into a coagulation reaction zone and a flocculation reaction zone connected sequentially along the water flow direction. The coagulation mixer (1) is installed in the coagulation reaction zone, and the flocculation mixer (2) is installed in the flocculation reaction zone. A drainage ditch pump (14) is installed at the bottom of the coagulation reaction tank (19), and the outlet of the drainage ditch pump (14) is connected to the sludge thickening tank (17).

5. The integrated wastewater treatment equipment according to claim 1, characterized in that: The central drive scraper (3) is located at the center of the coagulation sedimentation tank (22). The scraper arms of the central drive scraper (3) are radially distributed and in contact with the bottom of the tank. The coagulation sedimentation tank (22) is equipped with honeycomb inclined tube packing (5). The honeycomb inclined tube packing (5) is fixedly installed at an inclination angle of 60° to form an inclined sedimentation channel.

6. The integrated wastewater treatment equipment according to claim 1, characterized in that: The sludge thickening tank (17) and the coagulation sedimentation tank (22) are arranged adjacent to each other and connected by a sludge pipe. The sludge outlet of the central drive scraper (3) is directly connected to the sludge thickening tank (17) through the sludge pipe. An inclined guide plate is provided at the bottom of the sludge thickening tank (17), and the suction port of the sludge pump (10) is provided at the lowest point of the guide plate. A supernatant return pipe is provided at the upper part of the sludge thickening tank (17), and the supernatant return pipe is connected to the water inlet of the coagulation reaction tank (19). An external single-stage screw pump (6), an external single-stage screw pump inlet pipe (23), and an external single-stage screw pump outlet pipe (24) are provided on the return pipe. The external single-stage screw pump (6) is connected to the return pipe through the external single-stage screw pump inlet pipe (23) and the external single-stage screw pump outlet pipe (24).

7. The integrated wastewater treatment equipment according to claim 5, characterized in that: The central drive sludge scraper (3) is equipped with an overload protection device, which is connected to the control system; the bottom of the coagulation sedimentation tank (22) is provided with a guide slope of 3° to 5°, and the lowest point of the guide slope corresponds to the sludge collection hopper of the central drive sludge scraper (3).

8. The integrated wastewater treatment equipment according to claim 1, characterized in that: An online water quality monitor is also installed in the auxiliary equipment room (18). The monitoring points of the online water quality monitor are respectively set at the outlet of the coagulation reaction tank (19), the outlet of the coagulation sedimentation tank (22), and the outlet of the effluent trough (4). The online water quality monitor is electrically connected to the control system. The control system can automatically adjust the dosage of the dosing system and the stirring rate of the stirring system according to the water quality monitoring data.

Images