CN218811025U - Waste liquid treatment system - Google Patents

Abstract

The application discloses a waste liquid treatment system, which belongs to the technical field of waste water treatment. The disclosed waste liquid treatment system includes a treatment tank, an aerobic tank and a sedimentation tank connected in sequence, and the treatment tank, aerobic tank and sedimentation tank are sequentially arranged in the height direction of the waste liquid treatment system, and the treatment tank includes a connected gap Anoxic pool and anaerobic pool, the anoxic pool and the anaerobic pool are arranged adjacently, one of the anoxic pool and the anaerobic pool is provided with a liquid inlet, and the other is communicated with the aerobic pool. In this way, since the treatment tank, aerobic tank and sedimentation tank are arranged sequentially in the height direction of the waste liquid treatment system, that is, the anaerobic tank, anoxic tank, aerobic tank and sedimentation tank are arranged in a concentrated manner, and the floor area is reduced, avoiding The waste liquid treatment system occupies a large area due to decentralized settings, which is beneficial to reduce investment costs.

Description

Waste liquid treatment system

technical field

The application belongs to the technical field of waste water treatment, and in particular relates to a waste liquid treatment system.

Background technique

In the field of waste liquid treatment, the waste liquid treatment system usually includes treatment ponds such as anaerobic ponds, anoxic ponds, aerobic ponds, and sedimentation ponds, so that the waste liquids are treated in anaerobic, anoxic, aerobic, and sedimentation stages in sequence. However, in the related art, the treatment ponds such as anaerobic pond, anoxic pond, aerobic pond and sedimentation pond are scattered and arranged, resulting in a large area occupied by the waste liquid treatment system and high investment costs.

Utility model content

The purpose of the embodiment of the present application is to provide a waste liquid treatment system, which can solve the problem in the related art that the scattered treatment pools of the waste liquid treatment system lead to a large footprint.

An embodiment of the present application provides a waste liquid treatment system, including a treatment pond, an aerobic pond, and a sedimentation pond connected in sequence, and the treatment pond, the aerobic pond, and the sedimentation pond are at the height of the waste liquid treatment system The direction is arranged sequentially, and the treatment pond includes an anoxic pond and an anaerobic pond connected to each other, the anoxic pond is adjacent to the anaerobic pond, and the anoxic pond and the anaerobic pond One is provided with a liquid inlet, and the other is in communication with the aerobic pool.

In the embodiment of the present application, since the treatment tank, aerobic tank and sedimentation tank are arranged sequentially in the height direction of the waste liquid treatment system, that is, the anaerobic tank, anoxic tank, aerobic tank and sedimentation tank are centrally arranged, and the floor area Reduced, avoiding the problem that the waste liquid treatment system occupies a large area due to decentralized settings, which is conducive to reducing investment costs.

Description of drawings

Fig. 1 is a schematic structural diagram of a waste liquid treatment system disclosed in an embodiment of the present application;

Fig. 2 is a schematic structural diagram of a waste liquid treatment system disclosed in another embodiment of the present application.

Explanation of reference signs:

100-cylinder, a-axis, 110-anoxic tank, 111-liquid inlet, 120-anaerobic tank, 121-third return port, 130-aerobic tank, 131-first return port, 140-sedimentation Pool, 141-liquid outlet, 142-second return port,

210-the first partition, 211-the first liquid outlet, 220-the second partition, 221-the second liquid outlet, 230-the third partition, 231-the fourth liquid outlet, 240-the fourth partition Plate, 241-first liquid passage, 250-fifth partition, 251-second liquid passage, 260-sixth partition, 261-third liquid passage,

300-collecting bucket,

400-Flector,

500-Weir plate, 510-Third liquid outlet, 520-Filtration space,

600-precipitation device,

700-the first return line, 710-the first control valve,

800-the second return line, 810-the second control valve,

900 - Sewage pipe.

Detailed ways

The following will clearly describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," etc. distinguish Objects are generally of one type, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

The waste liquid treatment system provided by the embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

Please refer to Fig. 1-Fig. 2, the waste liquid treatment system disclosed in the embodiment of the present application includes a treatment pond, an aerobic pond 130 and a sedimentation pond 140 connected in sequence, and the treatment pond, an aerobic pond 130 and a sedimentation pond 140 are in the waste liquid treatment system The height direction is arranged in sequence, and the treatment pool includes an anoxic pool 110 and an anaerobic pool 120 connected to each other. A liquid inlet 111 is provided, and the other one communicates with the aerobic pool 130 , that is, the waste liquid can first enter the anoxic pool 110 or the anaerobic pool 120 first. Optionally, in the direction extending from top to bottom, the treatment tank, the aerobic tank 130 and the sedimentation tank 140 are arranged in sequence; or, in the direction extending from bottom to top, the treatment tank, the aerobic tank 130 and the sedimentation tank 140 Set in turn.

Specifically, the anoxic pool 110 is relative to anaerobic and aerobic, the amount of its dissolved oxygen is 0.2-0.5mg/L, the anoxic pool 110 refers to the reaction pool with dissolved oxygen but nitrate, the purpose is to remove different Pollutants; the anaerobic pool 120 uses anaerobic bacteria to hydrolyze, acidify and methanate organic matter, remove organic matter in waste liquid, and improve the biodegradability of waste liquid, which is beneficial to subsequent aerobic treatment; aerobic On the one hand, the function of the pool 130 is to let the activated sludge perform aerobic respiration, further decompose the organic matter into inorganic matter, and on the other hand, it is to remove pollutants; the sedimentation tank 140 is to remove the suspended solids in the water through natural sedimentation or coagulation sedimentation.

In the embodiment of the present application, since the treatment tank, the aerobic tank 130 and the sedimentation tank 140 are arranged sequentially in the height direction of the waste liquid treatment system, that is, the anaerobic tank 120, the anoxic tank 110, the aerobic tank 130 and the sedimentation tank 140 is centrally installed, and the floor area is reduced, which avoids the problem of large floor area of the waste liquid treatment system caused by decentralized settings, and is conducive to reducing investment costs.

In an optional embodiment, the anoxic tank 110, the anaerobic tank 120, the aerobic tank 130 and the sedimentation tank 140 may be formed by separate containers. In another embodiment, the waste liquid treatment system further includes a cylinder 100, a first partition 210, a second partition 220, and a third partition 230, in the direction of the axis of the cylinder 100 (that is, the direction where the axis a is located) Above, the first partition 210 and the second partition 220 are arranged at intervals in the cylinder 100 to divide the inner space of the cylinder 100 into a treatment tank, an aerobic tank 130 and a sedimentation tank 140, and the third partition 230 is arranged in In the treatment tank, the inner space of the treatment tank is divided into an anoxic tank 110 and an anaerobic tank 120 . Optionally, the edge of the first partition 210 and the edge of the second partition 220 are respectively connected to the inner wall of the cylinder 100, the two sides of the first partition 210 are respectively the treatment pool and the aerobic pool 130, and the second partition The two sides of the plate 220 are the aerobic tank 130 and the sedimentation tank 140 respectively. The plane where the third partition 230 is located is parallel to the axial direction of the cylinder 100, and in the axial direction of the cylinder 100, the third partition 230 One end is connected to the first partition 210 , the other end of the third partition 230 forms a fourth liquid outlet 231 with the wall of the cylinder 100 , and the anoxic tank 110 and the anaerobic tank 120 communicate through the fourth liquid outlet 231 . In this way, the internal space of the cylinder 100 is directly divided into the anoxic pool 110, the anaerobic pool 120, the aerobic pool 130 and the sedimentation pool 140 by using each partition, so that the waste liquid treatment system has an integrated structure without using multiple containers Anoxic tank 110, anaerobic tank 120, aerobic tank 130 and sedimentation tank 140 are formed in sequence, which is beneficial to simplify the structure.

In an optional embodiment, one of the anoxic tank 110 and the anaerobic tank 120 communicates with the aerobic tank 130 through a pipeline, that is, one end of the pipeline extends into the anoxic tank 110 and the anaerobic tank 120 The other end of the pipeline stretches into the aerobic pool 130. In another embodiment, the two sides of the first partition 210 are respectively the treatment pool and the aerobic pool 130, and a first liquid outlet 211 is provided between the first partition 210 and the inner wall of the cylinder 100, and the second A liquid outlet 211 communicates with one of the anoxic tank 110 and the anaerobic tank 120, the waste liquid treatment system also includes a fourth partition 240, the fourth partition 240 is arranged in the aerobic tank 130, the fourth partition 240 are respectively connected to the first partition 210 and the inner wall of the cylinder 100, and a first liquid passage 241 is provided between the fourth partition 240 and the inner wall of the cylinder 100, and the first liquid passage 241 is connected to the aerobic The pool 130 is in communication, and the first liquid outlet 211 is in communication with the first liquid passage 241 . Optionally, the extension direction of the fourth partition 240 is consistent with the axial direction of the cylinder 100, and in the axial direction of the cylinder 100, one end of the fourth partition 240 is connected with the first partition 210, and the fourth partition 240 There is a gap between the other end and the second partition 220, so that the waste liquid in the first liquid passage 241 enters the aerobic tank 130 through the gap. If the inner wall of the cylinder 100 is curved, the fourth partition 240 may be a straight plate; if the inner wall of the cylinder 100 is flat, the fourth partition 240 may be a bent plate.

With this embodiment, there is no need to separately set up pipelines to communicate with one of the anoxic tank 110 and the anaerobic tank 120 and the aerobic tank 130, and only through the cooperation of the fourth partition 240 and the inner wall surface of the cylinder body 100 can the first The liquid passage 241 is beneficial to simplify the structure.

In an optional embodiment, as shown in Figure 2, the sedimentation tank 140 is arranged on the top of the aerobic tank 130, and the two sides of the second partition 220 are respectively the aerobic tank 130 and the sedimentation tank 140, and the second partition 220 and the inner wall of the cylinder 100 is provided with a second liquid outlet 221, the second liquid outlet 221 communicates with the aerobic tank 130, and the waste liquid treatment system also includes a sixth separator 260 arranged in the sedimentation tank 140 , the sixth partition 260 is connected to the second partition 220, the third liquid passage 261 is formed between the sixth partition 260 and the inner wall of the cylinder 100, and the third liquid passage 261 communicates with the second liquid passage 221 , the aerobic tank 130 communicates with the sedimentation tank 140 through the second liquid outlet 221 and the third liquid passage 261 .

In another embodiment, as shown in FIG. 1, the waste liquid treatment system further includes a fifth partition 250 arranged in the sedimentation tank 140, the fifth partition 250 is connected to the sixth partition 260, and both Connected to the inner wall of the cylinder 100, the second liquid passage 251 is formed between the fifth partition 250 and the second partition 220, the second liquid passage 251 communicates with the aerobic tank 130, the second liquid passage 221, The second liquid passage 251 and the third liquid passage 261 communicate in sequence to form a bent passage, that is, the aerobic tank 130 communicates with the sedimentation tank 140 through the bent passage. Optionally, the fifth partition 250 and the second partition 220 are arranged horizontally, and the sixth partition 260 is arranged vertically, that is, the extension direction of the sixth partition 260 is consistent with the axial direction of the barrel 100 .

With this embodiment, the aerobic tank 130 and the sedimentation tank 140 can be connected through the fifth partition 250 and the sixth partition 260, so that a liquid passage is formed between the partition and the inner wall of the cylinder 100, and no separate setting is required. The pipeline is conducive to simplifying the structure; moreover, the bent channel is used to prevent the sedimentation tank 140 and the aerobic tank 130 from directly connecting up and down through the third liquid passage 261, which will cause the solid matter in the sedimentation tank 140 to fall to the aerobic tank under the action of gravity. In the pool 130, it is beneficial to the sedimentation process of the sedimentation tank 140.

In an optional embodiment, the inside of the sedimentation tank 140 is also provided with a collecting bucket 300, and the collecting bucket 300 is arranged at the bottom of the sedimentation tank 140. Optionally, the collecting bucket 300 is arranged on the fifth partition 250 facing away from the second One side of the dividing plate 220, and the edge of the port of the collecting bucket 300 is in contact with the surface of the sixth dividing plate 260, so that the waste liquid passing through the curved channel will eventually flow into the collecting bucket 300 along the surface of the sixth dividing plate 260; Alternatively, the edge of the port of the collecting bucket 300 is flush with the upper edge of the sixth partition 260 , so that the waste liquid passing through the curved channel can directly flow into the collecting bucket 300 .

In another embodiment, there is a flow guide 400 inside the sedimentation tank 140 , one end of the flow guide 400 is connected to the sixth partition 260 , and the other end of the flow guide 400 is opposite to the port of the collecting bucket 300 . Optionally, the deflector 400 may be a deflector, the deflector is arranged obliquely relative to the axial direction of the cylinder 100, the deflector is connected to the upper edge of the sixth partition 260, and the deflector is connected to the sixth partition The included angle between 260 can be 10°-20°; the flow guide 400 can also be a flow guide tube, one end of the flow guide tube communicates with the third liquid passage 261, and the other end of the flow guide tube faces towards the collecting bucket 300 port. With this embodiment, the waste liquid transported by the second flow channel is largely guided into the collecting bucket 300 by utilizing the flow guide function of the flow guide member 400, so as to avoid that the waste liquid transported by the second flow channel cannot be accurate. Flowing into the collecting bucket 300, the waste liquid is naturally precipitated in the collecting bucket 300, and then the solid matter is deposited in the collecting bucket 300.

In an optional embodiment, the interior of the sedimentation tank 140 is provided with a weir plate 500, the sedimentation tank 140 includes a top wall and a side wall, and the weir plate 500 is connected to the top wall and the side wall respectively, and the top wall and the side wall here Respectively refer to the top wall and side wall of the cylinder 100, so that the weir plate 500, the side wall and the top wall together form a filter space 520, the position of the filter space 520 is higher than the port edge of the collecting bucket 300, and the weir plate 500 and the side wall A third liquid outlet 510 is provided between them, and a liquid outlet 141 is provided on the top wall and/or the side wall. The third liquid outlet 510, the filter space 520 and the liquid outlet 141 are connected in sequence. Optionally, after the waste liquid gradually fills the entire settling tank 140, the solid matter in the waste liquid settles into the collecting bucket 300 under the action of gravity, and then the waste liquid enters the filter space 520 through the third liquid outlet 510, and passes through the filter space After the filtration at 520 , the purity of the waste liquid increases, and finally the waste liquid flows out from the liquid outlet 141 . According to this embodiment, the weir plate 500 is used to form a filtering space 520 to further filter the waste liquid at a position close to the liquid outlet 141 to reduce the content of solid substances in the waste liquid and improve the purity of the waste liquid. Of course, in other embodiments, in order to simplify the structure, the weir plate 500 may not be provided at the liquid outlet 141 .

In an optional embodiment, filter components are provided in the filter space 520, or the weir plate 500 is a flat plate structure, and in the vertical direction extending from the liquid outlet 141 to the third liquid passage 510, the weir plate 500 and the side The distance between the walls gradually decreases. Optionally, the weir plate 500 is arranged obliquely relative to the axial direction of the barrel 100 . In the latter embodiment, the solid matter in the waste liquid located in the filter space 520 will fall on the weir plate 500 under the action of gravity, and under the guidance of the weir plate 500, slide down along the surface of the weir plate 500, and finally The third liquid outlet 510 falls out naturally to filter solid matter, so there is no need to install other filtering components in the filter space 520, which is beneficial to simplify the structure.

In an optional embodiment, the inside of the sedimentation tank 140 is provided with a collecting bucket 300, and the sedimentation tank 140 is also provided with a liquid outlet 141, and the collecting bucket 300 and the liquid outlet 141 are sequentially arranged in the height direction of the sedimentation tank 140, The collecting bucket 300 communicates with the aerobic pool 130, and the collecting bucket 300 is used for collecting solid matter. Optionally, the collection bucket 300 communicates with the aerobic pool 130 through the above-mentioned bending channel or the third liquid passage 261 . After the waste liquid enters the settling tank 140 , the solid matter in the waste liquid settles in the collecting bucket 300 under the action of its own gravity.

In another optional embodiment, the inside of the sedimentation tank 140 is also provided with a sedimentation device 600, and the collecting bucket 300, the sedimentation device 600 and the liquid outlet 141 are sequentially arranged in the height direction of the sedimentation tank 140, and the sedimentation device 600 is used The solid matter in the waste liquid is filtered so that the liquid in the waste liquid passes through the sedimentation device 600 and flows out from the liquid outlet 141 . Optionally, as shown in Figures 1-2, the settling device 600 can be a slanted plate settling device 600. The slanted plate settling device 600 includes a plurality of slanted plates arranged in sequence, each slanted plate is parallel to each other, and the plane where the slanted plate is located is the same as The angle between the horizontal planes is 45°-60°, the waste liquid flows from the bottom of the inclined plate sedimentation device 600 to the top of the sedimentation device 600 through the gap between the inclined plates, and the solid matter in the waste liquid will be deposited on the surface of the inclined plates , and then slide down into the bucket 300. By adopting this embodiment, by adding the settling device 600, the settling efficiency in the settling tank 140 is improved, and the collecting bucket 300, the settling device 600 and the liquid outlet 141 are arranged in sequence in the height direction of the settling tank 140, so as to avoid the increase of the settling device 600. Large waste liquid treatment system footprint.

In an optional embodiment, the treatment pool is arranged on the top of the aerobic pool 130, the aerobic pool 130 is provided with a first return port 131, and the waste liquid treatment system also includes a first return line 700, the first return line The first end of 700 communicates with the first return port 131 , the second end of the first return line 700 communicates with the liquid inlet 111 , and the first return line 700 is provided with a first control valve 710 and a first pump body. Optionally, the first control valve 710 may be a regulating valve, and the first control valve 710 may be used to control the flow of the first return line 700 . In this way, using the pressurized power of the first pump body, part of the waste liquid in the aerobic tank 130 is returned to the anoxic tank 110 or the anaerobic tank 120 in the direction from bottom to top through the first return pipeline 700, so as to improve Waste liquid treatment efficiency. In this embodiment, the liquid inlet 111 is connected with a liquid inlet pipeline, and the liquid inlet pipeline may be provided with a third control valve, through which the flow rate of the liquid inlet pipeline is controlled, and the liquid inlet pipeline is provided with a pulse The pump uses the pulse pump to pump the waste liquid into the anoxic pool 110 or the anaerobic pool 120. Among them, the liquid feeding method adopts the intermittent pulse liquid feeding method, which can effectively prevent the accumulation of solid substances in the waste liquid.

In another embodiment, the aerobic tank 130 is disposed on the top of the treatment tank. In this way, the waste liquid flows from top to bottom in the first return pipeline 700, so the waste liquid can flow back naturally by its own gravity, and there is no need to install the first pump body to provide return flow power, which is conducive to simplifying the waste liquid treatment system The structure reduces the investment cost.

In an optional embodiment, the aerobic tank 130 is arranged at the bottom of the treatment tank, the sedimentation tank 140 is arranged at the bottom of the aerobic tank 130, the sedimentation tank 140 is provided with a second return port 142, and the anaerobic tank 120 is provided with There is a third return port 121, and the waste liquid treatment system further includes a second return line 800, the first end of the second return line 800 communicates with the second return port 142, and the second end of the second return line 800 communicates with the second return line 800. The three return ports 121 are connected, and the second return line 800 is provided with a second control valve 810 and a second pump body. Optionally, the second control valve 810 can be a regulating valve, through which the flow of the second return line 800 can be controlled. In this way, by using the pressurized power of the second pump body, part of the waste liquid in the sedimentation tank 140 is returned to the treatment tank from bottom to top through the second return pipeline 800, so as to improve the efficiency of waste liquid treatment.

Optionally, the second return pipeline 800 includes a first shunt pipe and a second shunt pipe, the first end of the first shunt pipe and the first end of the second shunt pipe are both communicated with the second return port 142, and the first The second end of the distribution pipe is connected to the third return pipeline, the second end of the second distribution pipe can be connected to the sludge treatment system, and the first distribution pipe is provided with a second control valve 810 .

In another embodiment, the aerobic tank 130 is set on the top of the treatment tank, and the sedimentation tank 140 is set on the top of the aerobic tank 130 . Optionally, the second return pipeline 800 communicates with the collecting bucket 300 in the sedimentation tank 140 . In this way, the waste liquid flows in the direction from top to bottom in the second return pipeline 800, so the waste liquid can flow back naturally by its own gravity, and there is no need to install a second pump body to provide return flow power, which is conducive to simplifying the waste liquid treatment system The structure reduces the investment cost.

In an optional embodiment, the waste liquid treatment system further includes a sewage discharge pipe 900, and the sewage discharge pipe 900 is arranged at the bottom of the anoxic pool 110. The sewage discharge pipe 900 can be provided with a fourth control valve, and the discharge pipe 900 is controlled by the fourth control valve. flow. In this way, the sludge and the like in the waste liquid can be discharged out of the waste liquid treatment system through the sewage pipe 900 .

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims (10)

1. A waste liquid treatment system, characterized in that, comprises a treatment tank, an aerobic tank (130) and a sedimentation tank (140) connected in sequence, and the treatment tank, the aerobic tank (130) and the sedimentation tank Pools (140) are sequentially arranged in the height direction of the waste liquid treatment system, and the treatment pools include anoxic pools (110) and anaerobic pools (120) connected to each other, and the anoxic pools (110) and The anaerobic pool (120) is adjacently arranged, and one of the anoxic pool (110) and the anaerobic pool (120) is provided with a liquid inlet (111), and the other is connected to the aerobic pool. The pool (130) is connected. 2. The waste liquid treatment system according to claim 1, characterized in that, the waste liquid treatment system further comprises a cylinder (100), a first partition (210), a second partition (220) and a third A partition (230), in the axial direction of the cylinder (100), the first partition (210) and the second partition (220) are arranged at intervals in the cylinder (100), In order to separate the inner space of the cylinder (100) into the treatment tank, the aerobic tank (130) and the sedimentation tank (140), the third partition (230) is arranged on the In the pool, the inner space of the treatment pool is divided into the anoxic pool (110) and the anaerobic pool (120). 3. The waste liquid treatment system according to claim 2, characterized in that, the two sides of the first partition (210) are respectively the treatment pool and the aerobic pool (130), and the first A first liquid outlet (211) is provided between the partition (210) and the inner wall of the cylinder (100), and the first liquid outlet (211) is connected to the anoxic pool (110) and the One of the anaerobic tanks (120) is connected, The waste liquid treatment system also includes a fourth partition (240), the fourth partition (240) is arranged in the aerobic pool (130), and the fourth partition (240) is respectively connected to the The first partition (210) is connected to the inner wall of the cylinder (100), and a first liquid passage is provided between the fourth partition (240) and the inner wall of the cylinder (100) (241), the first liquid passage (241) communicates with the aerobic pool (130), and the first liquid passage (211) communicates with the first liquid passage (241). 4. The waste liquid treatment system according to claim 2, characterized in that, the sedimentation tank (140) is arranged on the top of the aerobic tank (130), and the two sides of the second partition (220) They are respectively the aerobic tank (130) and the sedimentation tank (140), and a second liquid outlet (221) is provided between the second partition (220) and the inner wall of the cylinder (100). ), the second liquid outlet (221) communicates with the aerobic pool (130), The waste liquid treatment system also includes a fifth partition (250) and a sixth partition (260) arranged in the sedimentation tank (140), the fifth partition (250) and the sixth partition The plates (260) are connected, and both are connected to the inner wall of the cylinder (100), and a second liquid passage is formed between the fifth partition (250) and the second partition (220). (251), a third liquid passage (261) is formed between the sixth partition (260) and the inner wall of the cylinder (100), the second liquid passage (221), the first The second liquid passing channel (251) communicates with the third liquid passing channel (261) in sequence to form a bent channel. 5. The waste liquid treatment system according to claim 4, characterized in that, the inside of the settling tank (140) is also provided with a collection bucket (300) and a flow guide (400), and the collection bucket (300) Set at the bottom of the sedimentation tank (140), one end of the flow guide (400) is connected to the sixth partition (260), and the other end of the flow guide (400) is connected to the collecting bucket (300) port relative. 6. The waste liquid treatment system according to claim 1, characterized in that, the inside of the sedimentation tank (140) is provided with a weir plate (500), the sedimentation tank includes a top wall and a side wall, and the weir plate (500) are respectively connected with the top wall and the side wall, so that the weir plate (500), the side wall and the top wall jointly form a filtering space (520), and the weir plate (500 ) and the side wall is provided with a third liquid outlet (510), the top wall and/or the side wall is provided with a liquid outlet (141), the third liquid outlet (510), The filter space (520) communicates with the liquid outlet (141) in sequence. 7. The waste liquid treatment system according to claim 6, characterized in that, the weir plate (500) is a flat plate structure extending from the liquid outlet (141) to the third liquid outlet (510) In the vertical direction of , the distance between the weir plate (500) and the side wall gradually decreases. 8. The waste liquid treatment system according to claim 1, characterized in that, the inside of the settling tank (140) is provided with a bucket (300) and a settling device (600), and the settling tank (140) is also provided with There is a liquid outlet (141), and the collection bucket (300), the sedimentation device (600) and the liquid outlet (141) are sequentially arranged in the height direction of the sedimentation tank (140), and the collection The bucket (300) communicates with the aerobic tank (130), and the settling device (600) is used to filter solid matter in the waste liquid, so that the liquid in the waste liquid passes through the settling device (600) and The liquid flows out from the liquid outlet (141), and the collecting bucket (300) is used to collect the solid matter. 9. The waste liquid treatment system according to claim 1, characterized in that, the aerobic tank (130) is arranged on the top of the treatment tank, and the aerobic tank (130) is provided with a first return port ( 131), the waste liquid treatment system further includes a first return pipeline (700), the first end of the first return pipeline (700) communicates with the first return port (131), and the first The second end of the return pipeline (700) communicates with the liquid inlet (111), and the first return pipeline (700) is provided with a first control valve (710). 10. The waste liquid treatment system according to claim 1, characterized in that, the aerobic tank (130) is arranged at the top of the treatment tank, and the sedimentation tank (140) is arranged at the aerobic tank ( 130), the sedimentation tank (140) is provided with a second return port (142), the anaerobic tank (120) is provided with a third return port (121), and the waste liquid treatment system also includes a second A return line (800), the first end of the second return line (800) communicates with the second return port (142), the second end of the second return line (800) communicates with the The third return port (121) is connected, and the second return line (800) is provided with a second control valve (810).

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