All-in-one machine for recoagulating landfill leachate membrane concentrated solution by refluxing supernate

Abstract

The utility model relates to the technical field of high-concentration organic waste liquid treatment, and discloses an all-in-one machine for recoagulating landfill leachate membrane concentrated solution by refluxing supernate, which comprises a treatment pond, a mixed reaction cavity and a solid-liquid separation cavity are arranged in the treatment pond, a liquid inlet communicated with the mixed reaction cavity is arranged on one side of the treatment pond, and a liquid outlet communicated with the solid-liquid separation cavity is arranged on the other side of the treatment pond. The other side of the treatment tank is provided with a liquid outlet communicated with the solid-liquid separation cavity, the liquid inlet and the liquid outlet are respectively provided with a three-way connector, and the two three-way connectors are provided with the same reflux pipeline. According to the utility model, the mixing reaction cavity and the solid-liquid separation cavity are arranged in the treatment tank, and after being mixed with a medicament in the mixing reaction cavity, the landfill leachate membrane concentrated solution can flow into the solid-liquid separation cavity for precipitation treatment, so that the phenomenon that the precipitation of the mixed landfill leachate membrane concentrated solution is influenced is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to high concentration organic waste liquid treatment technical field, concretely is a kind of backflow supernatant again coagulation landfill leachate membrane concentrated liquid integrated machine. BACKGROUND

[0002] Landfill leachate membrane concentrated liquid is the concentrated liquid intercepted after landfill leachate is biodegraded, then is concentrated by reverse osmosis membrane or nanofiltration membrane.The main component is refractory organic matter and high-valence salt, and it is brown-black.These membrane filtration concentrated liquids containing a large amount of pollutants seriously threaten surface water, groundwater, soil environment and so on, and cannot be directly discharged into the environment.Coagulation is one of the commonly used methods for treating leachate concentrated liquid.

[0003] Currently, when landfill leachate membrane concentrated liquid is coagulated, non-backflow method or backflow coagulation sedimentation method is usually used.If non-backflow method is used, due to the insufficient reaction of part of coagulant with landfill leachate membrane concentrated liquid, the production cost is relatively high.If backflow coagulation sedimentation method is used, the backflow coagulation sedimentation may break the large flocs in the sediment, which is not conducive to sedimentation, increases the sedimentation time, and may also increase the turbidity of effluent;it is difficult to accurately control the hydraulic conditions.

[0004] Therefore, we propose a backflow supernatant coagulation landfill leachate membrane concentrated liquid integrated machine to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to solve the above technical problems.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a backflow supernatant coagulation landfill leachate membrane concentrated liquid integrated machine, comprising a treatment tank, a mixing reaction cavity and a solid-liquid separation cavity are arranged in the treatment tank, a liquid inlet communicating with the mixing reaction cavity is arranged on one side of the treatment tank, a liquid outlet communicating with the solid-liquid separation cavity is arranged on the other side of the treatment tank, a three-way connector is respectively arranged on the liquid inlet and the liquid outlet, and a same backflow pipeline is arranged on the two three-way connectors.

[0007] Further, a baffle is arranged on the upper part of the solid-liquid separation cavity, and the baffle is inclinedly arranged below the baffle along the direction of water flow.

[0008] Further, two partition plates are arranged between the mixing reaction cavity and the solid-liquid separation cavity, and a certain gap is reserved between the two partition plates, one of the partition plates is arranged above the treatment tank, and the other partition plate is arranged below the treatment tank.

[0009] Further, the first placement plate is horizontally arranged above the mixing reaction cavity, and a motor is arranged on the top of the first placement plate, the output shaft of the motor is fixed with a stirring shaft extending to below the mixing reaction cavity, and the bottom end of the stirring shaft is fixed with a mounting disc, and a plurality of stirring blades are fixed on the circumferential surface of the mounting disc at equal intervals in the circumferential direction.

[0010] Further, the second placement plate is horizontally arranged above the solid-liquid separation cavity, and a sludge pump is arranged at the center of the second placement plate, the extraction end of the sludge pump is fixed with an extraction pipe extending to below the solid-liquid separation cavity, and the output end of the sludge pump is fixed with a conveying pipe extending to outside the solid-liquid separation cavity.

[0011] Further, one end of the reflux pipe close to the liquid outlet is higher, one end of the reflux pipe close to the liquid inlet is lower, and a valve is arranged at the middle part of the reflux pipe.

[0012] The utility model discloses the beneficial effect that:

[0013] The utility model discloses the inside setting of mixing reaction cavity and solid - liquid separation cavity in the treatment pool, and the garbage leachate membrane concentrated solution can flow into the inside of solid - liquid separation cavity and carry out the settlement treatment after mixing with the reagent in the inside of mixing reaction cavity, and the dynamic and static treatment of the leachate concentrated solution can be carried out through mixing reaction cavity and solid - liquid separation cavity respectively, can alleviate the leachate concentrated solution settlement phenomenon, and the supernatant above the solid - liquid separation cavity can flow to the inside of mixing reaction cavity through the reflux pipe between the liquid inlet and the liquid outlet, makes the supernatant be able to flow to the inside of mixing reaction cavity and carry out secondary mixing, makes the reagent and the garbage leachate membrane concentrated solution can carry out the sufficient mixing, reduces the waste condition of reagent, reduces the operation cost. ACCURATE DRAWINGS

[0014] Figure 1 It is the three -dimensional structure schematic diagram of the utility model discloses;

[0015] Figure 2 It is the section structure schematic diagram of the utility model discloses;

[0016] Figure 3 It is the local structure schematic diagram of the utility model discloses.

[0017] The names corresponding to various marks in the drawing are as follows:

[0018] 1, treatment pool;2, mixing reaction cavity;3, solid - liquid separation cavity;4, liquid inlet;5, liquid outlet;6, three - way connector;7, reflux pipe;8, baffle;9, partition;10, first placement plate;11, motor;12, stirring shaft;13, mounting disc;14, stirring blade;15, second placement plate;16, sludge pump;17, extraction pipe;18, conveying pipe;19, valve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art belong to the protection scope of the utility model.

[0020] A kind of backflow supernatant mixes again coagulation landfill leachate membrane concentrated liquid all-in-one machine, including treatment pond 1, the two sides of treatment pond 1 are provided with liquid inlet 4 and liquid outlet 5 respectively;The inside of treatment pond 1 is provided with mixed reaction cavity 2 and solid-liquid separation cavity 3 with liquid inlet 4 intercommunication respectively with liquid outlet 5 intercommunication;Landfill leachate membrane concentrated liquid flows into the inside of mixed reaction cavity 2 when passing through liquid inlet 4, so that landfill leachate membrane concentrated liquid can be mixed with reagent (pH regulator and coagulant) in the inside of mixed reaction cavity 2;Mixed landfill leachate membrane concentrated liquid flows into the inside of solid-liquid separation cavity 3, can carry out solid-liquid separation, and supernatant (usually refers to liquid after processing) after processing can flow out from the inside of liquid outlet 5;

[0021] In detail: two partition plates 9 are arranged between mixed reaction cavity 2 and solid-liquid separation cavity 3, and a certain gap is left between the two partition plates 9, so that landfill leachate membrane concentrated liquid can flow;More detailedly: the partition plate 9 near mixed reaction cavity 2 is high;A certain gap is left between the partition plate 9 and the bottom of mixed reaction cavity;The partition plate 9 near solid-liquid separation cavity 3 is lowly arranged, and a certain gap is left between the partition plate 9 and the top of solid-liquid separation cavity 3;By the arrangement of the two partition plates 9, if landfill leachate membrane concentrated liquid in mixed reaction cavity 2 is mixed, the flowability of landfill leachate membrane concentrated liquid in solid-liquid separation cavity 3 can be reduced, and good precipitation effect is obtained;

[0022] The top of mixed reaction cavity 2 is fixed with horizontal first placing plate 10, and the center of the top of first placing plate 10 is installed with motor 11, and the output shaft of motor 11 is fixed with rotating shaft 12 passing through first placing plate 10, and the bottom end of rotating shaft 12 is installed with mounting disc 13, and the outer surface of mounting disc 13 is fixed with a plurality of stirring blades 14 equidistantly along circumferential direction, when motor 11 drives mounting disc 13 to rotate at high speed through rotating shaft 12, mounting disc 13 can drive a plurality of stirring blades 14 to rotate at high speed and mix and stir landfill leachate membrane concentrated liquid in mixed reaction cavity 2, so that landfill leachate membrane concentrated liquid and reagent are mixed fully;

[0023] The top of the solid-liquid separation cavity 3 is fixed with a second placing plate 15, and a sludge pump 16 is installed above the second placing plate 15. The extraction end of the sludge pump 16 is installed with an extraction pipeline 17, and the bottom end of the extraction pipeline 17 extends to the bottom of the solid-liquid separation cavity 3. Through the cooperation of the sludge pump 16 and the extraction pipeline 17, the precipitated sundries can be extracted. The output end of the sludge pump 16 is installed with a conveying pipeline 18. Through the cooperation of the sludge pump 16 and the conveying pipeline 18, the extracted sundries can be conveyed to the outside of the solid-liquid separation cavity 3.

[0024] It should be noted that the position of the liquid inlet 4 is low, and the position of the liquid outlet 5 is high. The liquid inlet 4 and the liquid outlet 5 are respectively installed with a three-way connector 6. The same inclined backflow pipeline 7 is installed between the two three-way connectors 6. Through the setting of the backflow pipeline 7, the separated supernatant (treated liquid) is conveyed to the inside of the solid-liquid separation cavity 3 again for backflow treatment through the backflow pipeline 7, which has good treatment effect. Under normal circumstances, the middle part of the backflow pipeline 7 is installed with a valve 19. Through the setting of the valve 19, the backflow pipeline 7 is opened or closed.

[0025] The upper part of the solid-liquid separation cavity 3 is installed with a baffle 8, and the lower part of the baffle 8 is inclinedly arranged along the water flow direction. Through the setting of the baffle 8, if the garbage leachate membrane concentrate in the mixed reaction cavity 2 flows to the inside of the solid-liquid separation cavity 3, the particles in the liquid can be inclinedly settled downward along the baffle 8.

[0026] If the landfill leachate membrane concentrate is treated: first, the pipeline of the landfill leachate membrane concentrate is connected with the liquid inlet 4, so that the landfill leachate membrane concentrate can be continuously transported to the inside of the mixing reaction cavity 2; then the reagent (pH regulator and coagulant) is put into the inside of the mixing reaction cavity 2, so that the landfill leachate membrane concentrate can be mixed with the reagent; at the same time, the motor 11 can also be started, the output shaft of the motor 11 can drive the stirring shaft 12 to stir, the stirring shaft 12 drives a plurality of stirring blades 14 to rotate at high speed through the mounting disc 13, the landfill leachate membrane concentrate can be stirred and treated by the stirring blades 14, so that the landfill leachate membrane concentrate can be fully mixed with the reagent; as the landfill leachate membrane concentrate in the mixing reaction cavity 2 continues to increase, the liquid level also continues to rise, the landfill leachate membrane concentrate in the mixing reaction cavity 2 can flow to the inside of the solid-liquid separation cavity 3, the landfill leachate membrane concentrate in the solid-liquid separation cavity 3 can be precipitated, so that the sundries in the landfill leachate membrane concentrate can be precipitated to the lower part of the solid-liquid separation cavity 3, so as to realize the work of solid-liquid separation; as the liquid level in the solid-liquid separation cavity 3 continues to rise, the supernatant (treated liquid) can flow to the inside of the liquid outlet 5, the supernatant flows to the position of the liquid outlet 5 through the three-way connector 6 and the reflux pipeline 7 in turn, and can enter the inside of the mixing reaction cavity 2 again for reflux treatment.

Claims

1. A backflow supernatant re-coagulation landfill leachate membrane concentrate all-in-one machine, comprising a treatment tank (1), a mixing reaction cavity (2) and a solid-liquid separation cavity (3) are arranged in the treatment tank (1), a liquid inlet (4) in communication with the mixing reaction cavity (2) is arranged on one side of the treatment tank (1), and a liquid outlet (5) in mutual communication with the solid-liquid separation cavity (3) is arranged on the other side of the treatment tank (1), characterized in that: Three-way connectors (6) are installed on the liquid inlet (4) and the liquid outlet (5) respectively, and the same return pipeline (7) is installed on the two three-way connectors (6).

2. The backflow supernatant remixing coagulation landfill leachate membrane concentrate integrated machine according to claim 1, characterized in that: A baffle (8) is installed on the upper portion of the solid-liquid separation cavity (3), and the baffle (8) is obliquely arranged along the direction of water flow.

3. The backflow supernatant remixing garbage leachate membrane concentrate integrated machine according to claim 1, characterized in that: Two partition plates (9) are arranged between the mixing reaction cavity (2) and the solid-liquid separation cavity (3), and a certain gap is reserved between the two partition plates (9), one of the partition plates (9) is arranged above the treatment tank (1), and the other partition plate (9) is arranged below the treatment tank (1).

4. The backflow supernatant remixing garbage leachate membrane concentrate integrated machine according to claim 1, characterized in that: A horizontal first placement plate (10) is fixed above the mixing reaction cavity (2), a motor (11) is installed on the top of the first placement plate (10), an output shaft of the motor (11) is fixed with a stirring shaft (12) extending below the mixing reaction cavity (2), a mounting disc (13) is fixed on the bottom end of the stirring shaft (12), and stirring blades (14) are fixed on the circumferential surface of the mounting disc (13) at equal intervals in the circumferential direction.

5. The reflow supernatant re-coagulation landfill leachate membrane concentrate integrated machine according to claim 1, characterized in that: A horizontal second placement plate (15) is fixed above the solid-liquid separation cavity (3), a sludge pump (16) is installed at the center of the second placement plate (15), a suction pipeline (17) extending below the solid-liquid separation cavity (3) is installed on the suction end of the sludge pump (16), and a conveying pipeline (18) extending outside the solid-liquid separation cavity (3) is installed on the output end of the sludge pump (16).

6. The reflow supernatant re-coagulation landfill leachate membrane concentrate integrated machine according to claim 1, characterized in that: One end of the return pipeline (7) close to the liquid outlet (5) is higher, one end of the return pipeline (7) close to the liquid inlet (4) is lower, and a valve (19) is installed on the middle part of the return pipeline (7).

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