CN220723874U

CN220723874U - Sewage treatment system

Info

Publication number: CN220723874U
Application number: CN202322311374.2U
Authority: CN
Inventors: 王波; 陈雪; 王东旭; 许世伟; 吕东军; 陈都民; 陈都方
Original assignee: Yuhong Pigment Co ltd
Current assignee: Yuhong Pigment Co ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2024-04-05
Anticipated expiration: 2033-08-28

Abstract

The utility model provides a sewage treatment system, in particular to the technical field of sewage treatment devices, which comprises: the device comprises an aeration tank, a spraying device is arranged at the top in the aeration tank, an aeration mechanism is arranged at the bottom in the aeration tank, the aeration tank is communicated with the aerobic tank through a feeding component and a discharging component, the spraying device is connected with a supply device through a pipeline, and the aeration mechanism is connected with the supply device through a pipeline. The utility model can treat pigment sewage, in order to improve sewage treatment efficiency, the sewage in the aerobic tank is aerated by the aeration device, and foam generated in the aeration treatment process in the aeration tank is defoamed by the spraying device, so that the influence of excessive foam on sewage treatment efficiency and equipment operation is avoided.

Description

Sewage treatment system

Technical Field

The utility model relates to the technical field of sewage treatment devices, in particular to a sewage treatment system.

Background

Pigment sewage is generated in the pigment production process, the pigment sewage treatment method mainly comprises a physical method and a chemical method, the most used physical treatment method is an adsorption method, and the method is suitable for treating sewage with low pollutant concentration and has high treatment cost. The chemical treatment methods mainly comprise a coagulation method, a Fenton method, an oxidation method, an electrolysis method, a biochemical treatment method and the like, and as the content of pollutants in the pigment sewage is high and the types of the pollutants are high, various chemical treatment methods are generally used for treating the pigment sewage.

In the existing pigment sewage treatment equipment, some equipment needs to perform aeration treatment on sewage, wherein air is forced to be introduced into the sewage, and the sewage is stirred by using the air, so that the sewage is fully contacted with the air, suspended matters in the sewage are prevented from sinking, and the contact of organic matters in the sewage with microorganisms and dissolved oxygen is enhanced, so that the organic matters in the sewage are oxidized and decomposed. In the aeration treatment process of sewage, a large amount of foam can be generated in the sewage, if the sewage is not treated, the foam can overflow from the pipeline and the gaps, so that the aeration treatment efficiency can be influenced, and the equipment can be polluted and even the normal operation of the equipment can be influenced.

Disclosure of Invention

The utility model aims to provide a sewage treatment system which can treat pigment sewage, treat foam generated in the aeration treatment process, improve the sewage treatment efficiency and protect the normal operation of equipment.

To achieve the above and other related objects, the present utility model provides a sewage treatment system comprising: the device comprises an adjusting tank, a Fenton reaction tank, a neutralization tank, a coagulation air floatation tank, a facultative tank, an aerobic tank, a sedimentation tank and an aeration device, wherein an inlet of the adjusting tank is connected with a pigment sewage pipeline; an inlet of the Fenton reaction tank is connected with an outlet of the regulating tank through a pipeline assembly; the inlet of the neutralization pipe is connected with the outlet of the Fenton reaction tank through a pipeline assembly; the inlet of the coagulation floatation tank is connected with the outlet of the neutralization tank through a pipeline assembly; the inlet of the facultative tank is connected with the sewage outlet of the coagulation air floatation tank through a pipeline component; the inlet of the aerobic tank is connected with the outlet of the facultative tank through a pipeline assembly; the inlet of the sedimentation tank is connected with the outlet of the aerobic tank through a pipeline assembly; the aeration device comprises an aeration tank, a spraying device is arranged at the top in the aeration tank, an aeration mechanism is arranged at the bottom in the aeration tank, the aeration tank is communicated with the aerobic tank through a feeding component and a discharging component, the spraying device is connected with a supply device through a pipeline, and the aeration mechanism is connected with an air supply device through a pipeline.

In an example of the sewage treatment system, the sewage treatment system further comprises a sludge tank, wherein an inlet of the sludge tank is respectively connected with a sludge outlet of the coagulation air floatation tank and a sludge outlet of the sedimentation tank through a pipeline assembly.

In an example of the sewage treatment system, a sludge outlet of the sedimentation tank is respectively connected with a sludge inlet of the aerobic tank and a sludge inlet of the facultative tank through a pipeline assembly.

In an example of the sewage treatment system, the spraying device comprises a spraying pipeline and a plurality of nozzles, wherein the spraying pipeline is fixedly arranged at the top of the inner wall of the aeration tank, the spraying pipeline is connected with the pipeline of the supply device, the nozzles are arranged at the bottom of the spraying pipeline, the spraying directions of the nozzles face the bottom of the aeration tank, and the spraying range of the nozzles can cover the sewage liquid level in the aeration tank.

In an example of the sewage treatment system, the spray pipeline comprises a plurality of straight pipes, the straight pipes are uniformly distributed at the top in the aeration tank, the straight pipes are connected with the pipeline of the supply device, and the nozzles are uniformly distributed at the bottoms of the straight pipes.

In an example of the sewage treatment system, the spraying pipeline comprises a plurality of annular pipes which are coaxially arranged, two adjacent annular pipes are communicated with each other, the annular pipes positioned on the outer side are connected with the pipeline of the supply device, and a plurality of nozzles are uniformly distributed at the bottoms of the annular pipes.

In one example of the sewage treatment system, the aeration mechanism comprises a jet aeration device, wherein the top inlet of the jet aeration device is connected with the air supply device through a pipeline, and the bottom inlet of the jet aeration device is connected with the feeding assembly through a pipeline.

In an example of the sewage treatment system, the feeding assembly comprises a first feeding pipe, a second feeding pipe and a feeding pump, wherein two ends of the first feeding pipe are respectively connected with the aerobic tank and the inlet of the feeding pump, and two ends of the second feeding pipe are respectively connected with the outlet of the feeding pump and the bottom inlet of the jet aeration device.

In an example of the sewage treatment system, the discharging assembly comprises a discharging pipe and a first air pipe, wherein two ends of the discharging pipe are respectively connected with the aeration tank and the aerobic tank, one end of the first air pipe is connected with the air supply device through a pipeline, and the other end of the first air pipe is positioned in the discharging pipe.

In an example of the sewage treatment system, the air supply device is connected with the top inlet of the jet aeration device through a main air pipe, and one end of the first air pipe is connected with the main air pipe.

In an example of the sewage treatment system, the supply device comprises a water supply device, a defoaming agent supply device and a controller, wherein the water supply device is connected with the spraying device through a main pipeline, the defoaming agent supply device is connected with the main pipeline, a foam liquid level detector is arranged at the top of the aeration tank, and the controller is electrically connected with the water supply device, the defoaming agent supply device and the foam liquid level detector.

In an example of the sewage treatment system, the water supply device comprises a water tank, a booster pump and a water pressure detector, wherein an inlet of the booster pump is connected with an outlet of the water tank through a pipeline, an outlet of the booster pump is connected with one end of the main pipeline, the water pressure detector is arranged on the main pipeline at the outlet of the booster pump, and the booster pump and the water pressure detector are electrically connected with the controller.

In an example of the sewage treatment system, the defoaming agent supply device comprises a defoaming agent tank and a metering pump, wherein an inlet of the metering pump is connected with an outlet of the defoaming agent tank through a pipeline, a valve is arranged on the pipeline between the metering pump and the defoaming agent tank, an outlet of the metering pump is connected with the main pipeline through a pipeline, and the metering pump and the valve are electrically connected with the controller.

The sewage treatment system disclosed by the utility model is used for treating pigment sewage through the regulating tank, the Fenton reaction tank, the neutralization tank, the coagulation air floatation tank, the facultative tank, the aerobic tank and the sedimentation tank, so that the pigment sewage is discharged after meeting the discharge standard, in order to improve the sewage treatment efficiency, the sewage in the aerobic tank is aerated through the aeration device, foam generated in the aeration treatment process in the aeration tank is defoamed through the spraying device, and therefore the sewage treatment efficiency and equipment operation are prevented from being influenced by excessive foam.

Drawings

FIG. 1 is a schematic view showing the structure of an aeration device in an embodiment of a sewage treatment system according to the present utility model;

FIG. 2 is a flow chart of a sewage treatment process of the sewage treatment system of the present utility model;

FIG. 3 is a schematic view showing the structure of an aeration tank in an embodiment of the sewage treatment system of the present utility model;

FIG. 4 is a schematic view showing a structure of a water supply device in an embodiment of the sewage treatment system of the present utility model;

FIG. 5 is a schematic diagram showing a structure of a defoamer supplying device in an embodiment of the sewage treatment system of the present utility model.

Element number:

100. an aeration device; 110. an aeration tank; 111. a foam level detector; 120. a spraying device; 121. a spray pipe; 122. a nozzle; 130. an aeration mechanism; 200. a feed assembly; 210. a first feed tube; 220. a second feed tube; 230. a feed pump; 300. a discharge assembly; 310. a discharge pipe; 320. a first air tube; 400. a supply device; 410. a water supply device; 411. a water tank; 412. a booster pump; 413. a water pressure detector; 414. a main pipe; 420. a defoaming agent supply device; 421. a defoamer tank; 422. a metering pump; 423. a valve; 500. a gas supply device; 510. a main air pipe; 600. and (5) an aerobic tank.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the utility model is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the utility model. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.

Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs and to which this utility model belongs, and any method, apparatus, or material of the prior art similar or identical to the methods, apparatus, or materials of the embodiments of the utility model may be used to practice the utility model.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of an aeration device in an embodiment of a sewage treatment system according to the present utility model; FIG. 2 is a flow chart of a sewage treatment process of the sewage treatment system of the present utility model. The present utility model provides a sewage treatment system, comprising: the device comprises an adjusting tank, a Fenton reaction tank, a neutralization tank, a coagulation air floatation tank, a facultative tank, an aerobic tank 600, a sedimentation tank and an aeration device, wherein an inlet of the adjusting tank is connected with a pigment sewage pipeline, an inlet of the Fenton reaction tank is connected with an outlet of the adjusting tank through a pipeline assembly, an inlet of a neutralization pipe is connected with an outlet of the Fenton reaction tank through a pipeline assembly, and an inlet of the coagulation air floatation tank is connected with an outlet of the neutralization tank through a pipeline assembly; an inlet of the facultative tank is connected with a sewage outlet of the coagulation air floatation tank through a pipeline assembly, an inlet of the aerobic tank 600 is connected with an outlet of the facultative tank through a pipeline assembly, and an inlet of the sedimentation tank is connected with an outlet of the aerobic tank 600 through a pipeline assembly. The pipeline assembly comprises a pipeline for connection, a valve switch on the pipeline and a conveying device for conveying materials, wherein the conveying device can select equipment with different conveying functions according to different conveying materials, the equipment comprises a conveying pump, a screw conveying device and the like, the conveying pump can be used for conveying sewage and mud-water mixtures, and the screw conveying device can be used for conveying sludge and the like.

The aeration device 100 comprises an aeration tank 110, a spraying device 120 is arranged at the top in the aeration tank 110, an aeration mechanism 130 is arranged at the bottom in the aeration tank 110, the aeration tank 110 is communicated with the aerobic tank 600 through a feeding component 200 and a discharging component 300, the spraying device 120 is connected with a supply device 400 through a pipeline, and the aeration mechanism 130 is connected with an air supply device 500 through a pipeline.

The regulating reservoir is used for temporarily storing pigment sewage, and simultaneously regulating the flow and the flow velocity of the sewage, so that the sewage is conveyed to the Fenton reaction tank, and the sewage can be preliminarily filtered through the grating when the pigment sewage enters the regulating reservoir. The Fenton reaction is carried out on the pigment sewage in the Fenton reaction tank, and the Fenton reaction is to oxidize organic matters in the sewage through hydrogen peroxide and ferrous ions under an acidic condition so as to oxidize the organic matters in the sewage to form inorganic matters such as carbon dioxide, water and the like. Fenton reaction equipment is conventional in the art and can be purchased by means of marketization and the structure of the Fenton reaction tank will not be described in detail here. The sewage treated by the Fenton reaction tank is subjected to neutralization reaction with alkali liquor in the neutralization tank, so that the pH value of the sewage is regulated to 7-8.

The coagulation air floatation tank comprises two technological processes of coagulation and air floatation, sewage firstly carries out the coagulation process after entering the coagulation air floatation tank, namely, coagulant is added into the sewage, colloidal suspended particles or milky pollutants which are difficult to precipitate in the sewage can form larger particles or floccules under the action of the coagulant, then the air floatation process is carried out, a large number of micro bubbles are generated through air floatation equipment, the micro bubbles can adhere to the particles or floccules generated in the coagulation process to form a complex with the density smaller than that of water, and the complex floats to the water surface by virtue of buoyancy, so that solid-liquid separation is completed, and the suspended pollutants in the sewage are removed. Facultative bacteria are arranged in the facultative tank, aerobic bacteria are arranged in the aerobic tank 600, and biochemical reaction treatment is carried out on sewage and sludge through the facultative bacteria and the aerobic bacteria, so that organic pollutants in the sewage and the sludge are removed. Finally, separating sewage from sludge by precipitation in a precipitation tank, discharging the qualified sewage after detection, and discharging the sludge after filter pressing treatment.

The sewage in the aerobic tank 600 enters the aeration tank 110 through the feeding component 200, the aeration mechanism 130 and the air supply device 500 are utilized to perform aeration treatment on the sewage in the aeration tank 110, and the sewage after aeration treatment returns to the aerobic tank 600 through the discharging component 300, so that the oxygen content of the sewage in the aerobic tank 600 is improved, and the treatment efficiency of aerobic bacteria is further improved. The supply device 400 can provide water or defoaming agent for the spraying device 120, and the spraying device 120 can spray the water or the defoaming agent on the liquid surface in the aeration tank 110, so that bubbles generated by sewage in the aeration process are eliminated, and the sewage treatment efficiency and the equipment operation are prevented from being influenced by excessive foam. The aeration mechanism 130 is a device having an aeration function, such as a jet aeration device or a blast aeration device, and the air supply device 500 includes an air pump, an air compressor, a blower, or the like.

Referring to fig. 2, in an example of the sewage treatment system of the present utility model, the sewage treatment system further includes a sludge tank, and an inlet of the sludge tank is connected to a sludge outlet of the coagulation air floatation tank and a sludge outlet of the sedimentation tank through a pipe assembly, respectively. The sludge outlet of the sedimentation tank is respectively connected with the sludge inlet of the aerobic tank 600 and the sludge inlet of the facultative tank through a pipeline assembly. The sludge in the coagulation air floatation tank and the sedimentation tank enters the sludge tank through a pipeline and conveying equipment for temporary storage, and is discharged after filter pressing treatment. When the sludge in the sedimentation tank is detected to be in accordance with the discharge standard, the sludge can be returned to the facultative tank or the aerobic tank 600 through a pipeline and conveying equipment for reprocessing, and after the sludge is detected to be qualified, the sludge is discharged after the filter pressing treatment.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an aeration tank in an embodiment of the sewage treatment system according to the present utility model. In an example of the sewage treatment system of the present utility model, the spraying device includes a spraying pipe 121 and a plurality of nozzles 122, the spraying pipe 121 is fixedly installed at the top of the inner wall of the aeration tank 110, the spraying pipe 121 is connected with the pipe of the supply device 400, the plurality of nozzles 122 are installed at the bottom of the spraying pipe 121, the spraying direction of the plurality of nozzles 122 faces the bottom of the aeration tank 110, and the spraying range of the plurality of nozzles 122 can cover the sewage level in the aeration tank 110.

In an example of the sewage treatment system of the present utility model, the spray pipe 121 includes a plurality of straight pipes, the straight pipes are uniformly distributed at the top of the aeration tank 110, the straight pipes are connected to the pipe of the supply device 400, and the nozzles 122 are uniformly distributed at the bottoms of the straight pipes.

In an example of the sewage treatment system of the present utility model, the spray pipe 121 includes a plurality of annular pipes coaxially disposed, two adjacent annular pipes are mutually communicated, the annular pipe located at the outer side is connected with the pipe of the supply device 400, and a plurality of nozzles 122 are uniformly distributed at bottoms of the annular pipes.

Referring to fig. 3, in an example of the sewage treatment system of the present utility model, the aeration mechanism 130 includes a jet aeration device, a top inlet of the jet aeration device is connected to the air supply device 500 through the main air pipe 510, the feeding assembly 200 includes a first feeding pipe 210, a second feeding pipe 220, and a feeding pump 230, two ends of the first feeding pipe 210 are respectively connected to the aerobic tank 600 and an inlet of the feeding pump 230, and two ends of the second feeding pipe 220 are respectively connected to an outlet of the feeding pump 230 and a bottom inlet of the jet aeration device. The discharging assembly 300 comprises a discharging pipe 310 and a first gas pipe 320, wherein two ends of the discharging pipe 320 are respectively connected with the aeration tank 110 and the aerobic tank 600, one end of the first gas pipe 320 is connected with the main gas pipe 510, and the other end of the first gas pipe 320 is positioned in the discharging pipe 310.

The sewage in the aerobic tank 600 enters the jet aeration device through the first feeding pipe 210 and the second feeding pipe 220 under the action of the feeding pump 230, is mixed with the compressed air provided by the air supply device 500, and is sprayed out from the spraying port of the jet aeration device, so that the aeration process is completed. The sewage in the aeration tank 110 is returned to the aerobic tank 600 through the discharging pipe 310 under the driving of the air flow sprayed out by the first air pipe 320. The discharge pipe 310 is positioned at the upper side of the feeding assembly 200 and the aeration mechanism 130, and one end of the discharge pipe 310 connected with the aeration tank 110 is positioned at the upper side of the sewage level in the aerobic tank 600.

Referring to fig. 1, fig. 4 and fig. 5, fig. 4 is a schematic structural diagram of a water supply device in an embodiment of a sewage treatment system according to the present utility model; FIG. 5 is a schematic diagram showing a structure of a defoamer supplying device in an embodiment of the sewage treatment system of the present utility model. In an example of the sewage treatment system of the present utility model, the supply device 400 includes a water supply device 410, a defoaming agent supply device 420, and a controller, the water supply device 410 is connected to the spraying device 120 through a main pipe 414, the defoaming agent supply device 420 is connected to the main pipe 414, and a foam level detector 111 is disposed at the top of the aeration tank 110. The water supply device 410 comprises a water tank 411, a booster pump 412 and a water pressure detector 413, wherein an inlet of the booster pump 412 is connected with an outlet of the water tank 411 through a pipeline, an outlet of the booster pump 412 is connected with one end of the main pipeline 414, and the water pressure detector 413 is arranged on the main pipeline 414 at an outlet of the booster pump 412. The defoamer supply device 420 comprises a defoamer tank 421 and a metering pump 422, wherein an inlet of the metering pump 422 is connected with an outlet of the defoamer tank 421 through a pipeline, a valve 423 is arranged on the pipeline between the metering pump 422 and the defoamer tank 421, and an outlet of the metering pump 422 is connected with the main pipeline 414 through a pipeline. The foam level detector 111, the booster pump 412, the water pressure detector 413, the metering pump 422, and the valve 423 are all electrically connected to the controller.

The water in the water tank 411 is pressurized by the booster pump 412 and then sprayed out from the spraying device 120, so that the foam on the liquid surface in the aeration tank 110 can be broken, and a certain defoaming effect can be achieved. Along with the rising of the foam liquid level, when the foam liquid level detector 111 detects that the foam liquid level rises to the set alarm liquid level, the controller opens the valve 423 and the metering pump 422, so that the defoaming agent solution in the defoaming agent tank 421 enters the main pipeline 414 and is sprayed out from the spraying device 120 under the driving of water flow, thereby enhancing the defoaming effect and reducing the foam liquid level to a safe interval. A monitoring device for observing the foam liquid level can be arranged in the aeration tank 110, so that the outlet water pressure of the booster pump 412 and the flow rate of the defoaming agent solution of the metering pump 422 can be regulated according to actual conditions, the defoaming effect can be controlled more accurately, and the defoaming efficiency can be improved. It should be noted that, the control of the booster pump, the metering pump, and the valve by the controller, the detection of the foam liquid level by the foam liquid level detector, and the measurement of the water pressure by the water pressure detector are conventional techniques in the digital control technology field, and will not be described in detail herein.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A sewage treatment system, comprising:

the inlet of the regulating tank is connected with the pigment sewage pipeline;

the inlet of the Fenton reaction tank is connected with the outlet of the regulating tank through a pipeline assembly;

the inlet of the neutralization tank is connected with the outlet of the Fenton reaction tank through a pipeline assembly;

the inlet of the coagulation air floatation tank is connected with the outlet of the neutralization tank through a pipeline assembly;

the inlet of the facultative tank is connected with the sewage outlet of the coagulation air floatation tank through a pipeline assembly;

the inlet of the aerobic tank is connected with the outlet of the facultative tank through a pipeline assembly;

the inlet of the sedimentation tank is connected with the outlet of the aerobic tank through a pipeline assembly;

the aeration device comprises an aeration tank, a spraying device is arranged at the top in the aeration tank, an aeration mechanism is arranged at the bottom in the aeration tank, the aeration tank is communicated with the aerobic tank through a feeding component and a discharging component, the spraying device is connected with a supply device through a pipeline, and the aeration mechanism is connected with the supply device through a pipeline.

2. The wastewater treatment system of claim 1, further comprising a sludge tank, wherein an inlet of the sludge tank is connected to a sludge outlet of the coagulation air floatation tank and a sludge outlet of the sedimentation tank, respectively, through a pipe assembly.

3. The wastewater treatment system of claim 1, wherein the spray device comprises a spray pipe and a plurality of nozzles, the spray pipe is fixedly arranged at the top of the inner wall of the aeration tank, the spray pipe is connected with the pipe of the supply device, the plurality of nozzles are arranged at the bottom of the spray pipe, the spray direction of the plurality of nozzles faces the bottom of the aeration tank, and the spray range of the plurality of nozzles can cover the wastewater level in the aeration tank.

4. The wastewater treatment system of claim 1, wherein the aeration mechanism comprises a jet aeration device, a top inlet of the jet aeration device is connected to the gas supply device by a conduit, and a bottom inlet of the jet aeration device is connected to the feed assembly by a conduit.

5. The sewage treatment system of claim 4, wherein the feed assembly comprises a first feed pipe, a second feed pipe and a feed pump, wherein two ends of the first feed pipe are respectively connected with the aerobic tank and an inlet of the feed pump, and two ends of the second feed pipe are respectively connected with an outlet of the feed pump and a bottom inlet of the jet aeration device.

6. The wastewater treatment system of claim 4, wherein the discharge assembly comprises a discharge pipe and a first air pipe, two ends of the discharge pipe are respectively connected with the aeration tank and the aerobic tank, one end of the first air pipe is connected with the air supply device through a pipeline, and the other end of the first air pipe is positioned in the discharge pipe.

7. The wastewater treatment system of claim 6, wherein the air supply device is connected to the top inlet of the jet aeration device via a main air pipe, and wherein one end of the first air pipe is connected to the main air pipe.

8. The sewage treatment system of claim 1, wherein the supply means comprises a water supply means, a defoamer supply means and a controller, the water supply means is connected to the spray means via a main pipe, the defoamer supply means is connected to the main pipe, a foam level detector is provided at the top of the aeration tank, and the controller is electrically connected to the water supply means, the defoamer supply means and the foam level detector.

9. The wastewater treatment system of claim 8, wherein the water supply device comprises a water tank, a booster pump, and a water pressure detector, wherein an inlet of the booster pump is connected with an outlet of the water tank through a pipeline, an outlet of the booster pump is connected with one end of the main pipeline, the water pressure detector is arranged on the main pipeline at an outlet of the booster pump, and the booster pump and the water pressure detector are electrically connected with the controller.

10. The wastewater treatment system of claim 8, wherein the defoamer supply device comprises a defoamer tank and a metering pump, wherein an inlet of the metering pump is connected with an outlet of the defoamer tank through a pipeline, a valve is arranged on the pipeline between the metering pump and the defoamer tank, an outlet of the metering pump is connected with the main pipeline through a pipeline, and the metering pump and the valve are electrically connected with the controller.