CN215102265U

CN215102265U - Anaerobic sedimentation tank for wastewater treatment

Info

Publication number: CN215102265U
Application number: CN202120710680.1U
Authority: CN
Inventors: 王琳
Original assignee: Chongqing Rongzhi Environmental Protection Technology Co ltd
Current assignee: Chongqing Rongzhi Environmental Protection Technology Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-12-10
Anticipated expiration: 2031-04-06

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses an anaerobic sedimentation tank for wastewater treatment, which comprises a tank body, wherein a first reaction zone, a second reaction zone and an upper liquid zone are sequentially arranged in the tank body from bottom to top, a first separator is arranged between the first reaction zone and the second reaction zone, and a second separator is arranged between the second reaction zone and the upper liquid zone; the water inlet mechanism is installed to the bottom of cell body, the play mill weir is installed at the top of cell body, the air discharge chamber is installed at the top of play mill weir, the back flow is installed to the bottom of air discharge chamber, the other end downwardly extending of back flow to the bottom of cell body and be linked together with the water inlet mechanism, the riser is installed to the bottom of back flow both sides. The utility model has simple integral structure, can realize the anaerobic treatment of the waste water, can produce methane for recycling, and has the functions of waste water recycling, water and energy saving and pollution control.

Description

Anaerobic sedimentation tank for wastewater treatment

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to an anaerobic sedimentation tank for wastewater treatment.

Background

The waste water treatment is one of the important ways of water resource recycling, in the process of waste water treatment, a large amount of organic matters are contained in some waste water, the waste water is usually treated by an anaerobic method, and the organic matters are biochemically degraded by taking anaerobic microorganisms as main bodies under the anoxic condition.

SUMMERY OF THE UTILITY MODEL

In view of the above problems existing in the prior art, the utility model provides an anaerobic sedimentation tank for wastewater treatment.

In order to achieve the purpose, the utility model provides an anaerobic sedimentation tank for wastewater treatment, which comprises a tank body, wherein a first reaction zone, a second reaction zone and an upper liquid zone are sequentially arranged in the tank body from bottom to top, a first separator is arranged between the first reaction zone and the second reaction zone, and a second separator is arranged between the second reaction zone and the upper liquid zone;

the bottom of the tank body is provided with a water inlet mechanism, the top of the tank body is provided with a water outlet weir, the top of the water outlet weir is provided with an exhaust chamber, the bottom end of the exhaust chamber is provided with a return pipe, the other end of the return pipe extends downwards to the bottom of the tank body and is communicated with the water inlet mechanism, the bottoms of two sides of the return pipe are provided with lift pipes, the other ends of the lift pipes extend into the first separator, and the top of the return pipe is provided with a biogas pipe;

the middle parts of the first reaction zone and the second reaction zone are respectively provided with a stirring paddle, and a middle shaft lever of the stirring paddle is rotatably connected with the middle parts of the first separator and the second separator.

Preferably, the water inlet mechanism comprises a water distributor and a water inlet pipe which are installed at the bottom of the tank body, one end of the water inlet pipe is fixedly connected with the water inlet end of the water distributor, and the other end of the water inlet pipe extends to the outside of the tank body.

Preferably, the water inlet end of the water distributor is connected with the bottom end of the return pipe.

Preferably, the stirring paddle consists of a rotating shaft in the middle and blades on the periphery, and the rotating shaft is rotatably connected with the middle parts of the first separator and the second separator.

Preferably, the rotating shaft of the stirring paddle is a hollow rotating shaft, the bottom end of the return pipe penetrates through the rotating shaft, and the bottom end opening of the rotating shaft is rotatably connected with the return pipe through a sealing piece.

Preferably, the first separator and the second separator are both three-phase separators.

Compared with the prior art, the utility model provides an anaerobic sedimentation tank for wastewater treatment has following beneficial effect:

when the utility model is used, the waste water to be treated is injected into the water distributor from the water inlet pipe and is evenly injected into the first reaction area by the water distributor, under the anoxic condition, the sludge microorganisms in the sewage decompose the organic matters and convert the organic matters into the methane, the methane is continuously discharged in the form of micro bubbles, the micro bubbles are continuously merged in the ascending process and are gradually formed into larger bubbles, and the stirring paddle is pushed to rotate, so that the ascending flow of the sewage and the methane generate severe disturbance, the sludge in the first reaction area is in an expansion and fluidization state, the contact of the surface of the sludge and the water is strengthened, the sludge keeps high activity, the yield and the anaerobic reaction effect of the methane are improved, simultaneously, a sludge-water mixture with thinner sludge concentration is formed, the sludge and the water rise together to enter the first separator, when the methane touches the reflecting plate at the lower part of the first separator, the sludge bends around the reflecting plate, then the sewage passes through the water layer to enter the air chamber, the marsh gas concentrated in the air chamber and a small part of mud-water mixture are upwards led out through the riser, a part of mixed liquor enters a settling zone of the first separator through reflection, the sludge in the sewage is flocculated, particles are gradually increased, and settled under the action of gravity, the sludge settled on the inclined wall slides along the inclined wall to the first reaction zone, accumulating a large amount of sludge in the first reaction zone, allowing the other part of the mixed liquor to enter the second separator, repeating the process in the first separator, allowing the sludge precipitate to slide into the second reaction zone, allowing the sludge precipitate to slide into the first reaction zone from the first separator for accumulation, allowing the treated water to enter the upper liquid zone and overflow from the effluent weir, the mixture transmitted into the exhaust chamber through the riser completes gas-liquid separation in the exhaust chamber, mud and water flow into the water distributor through the return pipe, and methane is discharged through the methane pipe; the utility model has simple integral structure, can realize the anaerobic treatment of the waste water, can produce methane for recycling, and has the functions of waste water recycling, water and energy saving and pollution control.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a tank body; 2. a first reaction zone; 3. a second reaction zone; 4. an upper liquid zone; 5. a first separator; 6. a second separator; 7. a water inlet mechanism; 8. an effluent weir; 9. an exhaust chamber; 10. a return pipe; 11. a riser tube; 12. a biogas pipe; 13. stirring blade paddles; 14. a water distributor; 15. and (4) a water inlet pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Referring to fig. 1, an anaerobic sedimentation tank for wastewater treatment comprises a tank body 1, wherein a first reaction zone 2, a second reaction zone 3 and an upper liquid zone 4 are sequentially arranged in the tank body 1 from bottom to top, a first separator 5 is arranged between the first reaction zone 2 and the second reaction zone 3, and a second separator 6 is arranged between the second reaction zone 3 and the upper liquid zone 4;

the bottom of the pool body 1 is provided with a water inlet mechanism 7, the top of the pool body 1 is provided with a water outlet weir 8, the top of the water outlet weir 8 is provided with an exhaust chamber 9, the bottom end of the exhaust chamber 9 is provided with a return pipe 10, the other end of the return pipe 10 extends downwards to the bottom of the pool body 1 and is communicated with the water inlet mechanism 7, the bottoms of two sides of the return pipe 10 are provided with lift pipes 11, the other end of each lift pipe 11 extends into the first separator 5, and the top of each return pipe 10 is provided with a biogas pipe 12;

the middle parts of the first reaction zone 2 and the second reaction zone 3 are both provided with stirring paddles 13, and the middle shaft lever of the stirring paddles 13 is rotatably connected with the middle parts of the first separator 5 and the second separator 6.

The water inlet mechanism 7 comprises a water distributor 14 and a water inlet pipe 15 which are arranged at the bottom of the tank body 1, one end of the water inlet pipe 15 is fixedly connected with the water inlet end of the water distributor 14, and the other end of the water inlet pipe 15 extends to the outside of the tank body 1.

The water inlet end of the water distributor 14 is connected with the bottom end of the return pipe 10.

The stirring paddle 13 is composed of a rotating shaft in the middle and peripheral paddles, the rotating shaft is rotatably connected with the middle of the first separator 5 and the middle of the second separator 6, and the stirring paddle 13 can be pushed by the upward flow of the marsh gas and the sewage, so that the sewage and the marsh gas are stirred, the contact surface of the muddy water is improved, the anaerobic reaction effect is improved, and the wastewater treatment effect is improved.

The rotating shaft of the stirring paddle 13 is a hollow rotating shaft, the bottom end of the return pipe 10 penetrates through the rotating shaft, the bottom end opening of the rotating shaft is rotatably connected with the return pipe 10 through a sealing piece, and the stirring paddle 13 does not influence the normal return of the return pipe 10 while rotating.

The first separator 5 and the second separator 6 are both three-phase separators, and conventional three-phase separators are selected, so that three-phase separation of oil, gas and water can be realized.

When the utility model is used, the waste water to be treated is injected into the water distributor 14 from the water inlet pipe 15 and is evenly injected into the first reaction area 2 by the water distributor 14, under the anoxic condition, the sludge microorganisms in the sewage decompose the organic matters and convert the organic matters into the methane, the methane is continuously discharged in the form of micro-bubbles, the micro-bubbles are continuously merged in the ascending process and gradually form larger bubbles and push the stirring paddle 13 to rotate, so that the ascending flow of the sewage and the methane generate severe disturbance, the sludge in the first reaction area 2 is in an expansion and fluidization state, the surface contact of the sludge and the water is strengthened, the sludge keeps high activity, thereby the yield and the anaerobic reaction effect of the methane are improved, a sludge-water mixture with thinner sludge concentration is formed simultaneously, the sludge and the water ascend together and enter the first separator 5, when the methane touches the reflecting plate at the lower part of the first separator 5, the mixture turns around the reflecting plate, then passes through the water layer to enter the air chamber, the marsh gas and a small part of the mud-water mixture which are concentrated in the air chamber are upwards guided out through the lifting pipe 11, a part of the mixed liquid enters the settling zone of the first separator 5 through reflection, the sludge in the sewage is flocculated, the particles are gradually increased and are settled under the action of gravity, the sludge settled on the inclined wall slides into the first reaction zone 2 along the inclined wall, a large amount of sludge is accumulated in the first reaction zone 2, the other part of the mixed liquid enters the second separator 6, the process in the first separator 5 is repeated, the sludge sediment slides into the second reaction zone 3, then slides into the first reaction zone 2 through the first separator 5 to be accumulated, the treated water enters the upper liquid zone 4 and overflows through the water outlet weir 8, the mixture which is transmitted into the exhaust chamber 9 through the lifting pipe 11 is separated in the exhaust chamber 9, the mud water is converged into the water distributor 14 through the return pipe 10, and the marsh gas is discharged through the marsh gas pipe 12; the utility model has simple integral structure, can realize the anaerobic treatment of the waste water, can produce methane for recycling, and has the functions of waste water recycling, water and energy saving and pollution control.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the present invention, the scope of which is defined by the appended claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. An anaerobic sedimentation tank for wastewater treatment comprises a tank body (1) and is characterized in that a first reaction zone (2), a second reaction zone (3) and an upper liquid zone (4) are sequentially arranged in the tank body (1) from bottom to top, a first separator (5) is arranged between the first reaction zone (2) and the second reaction zone (3), and a second separator (6) is arranged between the second reaction zone (3) and the upper liquid zone (4);

the sewage treatment device is characterized in that a water inlet mechanism (7) is installed at the bottom of the pool body (1), a water outlet weir (8) is installed at the top of the pool body (1), an exhaust chamber (9) is installed at the top of the water outlet weir (8), a return pipe (10) is installed at the bottom end of the exhaust chamber (9), the other end of the return pipe (10) extends downwards to the bottom of the pool body (1) and is communicated with the water inlet mechanism (7), lifting pipes (11) are installed at the bottoms of two sides of the return pipe (10), the other end of each lifting pipe (11) extends into the first separator (5), and a biogas pipe (12) is installed at the top of the return pipe (10);

the middle parts of the first reaction zone (2) and the second reaction zone (3) are respectively provided with a stirring paddle (13), and a middle shaft lever of the stirring paddle (13) is rotatably connected with the middle parts of the first separator (5) and the second separator (6).

2. The anaerobic sedimentation tank for wastewater treatment as claimed in claim 1, wherein the water inlet mechanism (7) comprises a water distributor (14) and a water inlet pipe (15) installed at the bottom of the tank body (1), one end of the water inlet pipe (15) is fixedly connected with the water inlet end of the water distributor (14), and the other end of the water inlet pipe (15) extends to the outside of the tank body (1).

3. An anaerobic sedimentation tank for wastewater treatment according to claim 2, characterized in that the water inlet end of the water distributor (14) is connected to the bottom end of the return pipe (10).

4. An anaerobic sedimentation tank for wastewater treatment according to claim 1, characterized in that the stirring paddles (13) consist of a central rotation shaft and peripheral paddles, the rotation shaft being rotatably connected to the central portions of the first separator (5) and the second separator (6).

5. The anaerobic sedimentation tank for wastewater treatment as claimed in claim 4, wherein the rotation shaft of the paddle (13) is a hollow rotation shaft, the bottom end of the return pipe (10) passes through the inside of the rotation shaft, and the bottom end opening of the rotation shaft is rotatably connected with the return pipe (10) through a sealing member.

6. An anaerobic sedimentation tank for the treatment of wastewater according to claim 1, characterised in that the first separator (5) and the second separator (6) are both three-phase separators.