CN211847336U

CN211847336U - Leachate anaerobic biochemical treatment device

Info

Publication number: CN211847336U
Application number: CN201922403516.1U
Authority: CN
Inventors: 梁万祥; 王庆华; 徐振华
Original assignee: Suzhou Hongbo Environmental Protection Technology Co ltd
Current assignee: Suzhou Hongbo Environmental Protection Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-03
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a filtration liquid anaerobism biochemical treatment device, including the anaerobism filtering pond, load anaerobism and filtration liquid in the anaerobism filtering pond, the anaerobism filtering pond will be held back, adsorb and the filtration liquid transmission of decomposition to one-level biology concurrently oxygen pond by anaerobism through drainage tube, so be provided with gaseous collecting pipeline in the anaerobism filtering pond, gaseous collecting pipeline arranges in one end in the anaerobism filtering pond is provided with atmospheric pressure response mechanism, atmospheric pressure response mechanism is including responding to the spheroid, respond to the spheroid and pass through spring and connecting plate fixed connection, the connecting plate passes through the fixed setting of bracing piece and is in on the gaseous collecting pipeline inner wall, anaerobism filtering pond bottom is provided with agitating unit. The device improves the traditional anaerobic biofilter, improves the purity of collected methane gas, reduces the content of intermediate product gas, and improves the reaction rate in the anaerobic biofilter.

Description

Leachate anaerobic biochemical treatment device

Technical Field

The utility model relates to a landfill leachate treatment device technical field especially relates to a leachate anaerobism biochemical treatment device.

Background

The biological treatment method of the landfill leachate comprises the steps of sending the pretreated landfill leachate into an anaerobic biological filter, intercepting, adsorbing and decomposing organic pollutants in the landfill leachate by anaerobic microorganisms in the anaerobic biological filter, changing organic matters which are difficult to biodegrade into organic matters which are easy to biodegrade, enabling the landfill leachate to enter a primary biochemical facultative tank for primary facultative biochemical treatment after passing through the anaerobic biological filter, and removing substances such as ammonia nitrogen, total nitrogen and total phosphorus in the landfill leachate in a facultative state through carbonization, assimilation, nitrification and denitrification so as to reduce COD.

After the first-stage facultative biochemical treatment, the landfill leachate enters an anoxic tank, denitrification is carried out in the anoxic tank, total nitrogen in the landfill leachate is removed by adding methanol as an external carbon source, denitrification is carried out on nitrite in the landfill leachate after the facultative biochemical treatment by utilizing the external carbon source such as the methanol, the landfill leachate enters a second-stage biochemical aerobic tank for second-stage aerobic biochemical treatment after passing through the anoxic tank, pollutants such as ammonia nitrogen, total nitrogen and the like in the landfill leachate are further removed through carbonization, nitrification and denitrification, COD is reduced, after the second-stage aerobic biochemical treatment, the landfill leachate passes through a ceramic membrane tank provided with a ceramic membrane component and then is discharged, and a subsequent advanced treatment process is carried out.

In the anaerobic biological treatment process, the leachate is intercepted, adsorbed and decomposed by anaerobic organisms, the final product is methane gas with high heat value and can be used as clean energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at improving the purity of methane gas collected in an anaerobic biological filter, reducing the content of intermediate product gas and providing a leachate anaerobic biochemical treatment device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a leachate anaerobism biochemical treatment device, includes the anaerobism filtering pond, load anaerobism and filtration liquid in the anaerobism filtering pond, the anaerobism filtering pond will be held back, adsorb and the filtration liquid of decomposition by anaerobism through drain line and transmit to one-level biological facultative anaerobic pond in, the anaerobism is held back, the final product that adsorbs and decompose the filtration liquid is the very high methane gas of calorific value, can be used as clean energy, and this device collects methane gas, but has more intermediate product gas in the methane gas in the reaction earlier stage, so be provided with the gas collection pipeline in the anaerobism filtering pond.

Preferably, the gas collecting pipeline is arranged to be a plurality of, the gas collecting pipeline is arranged in one end in the anaerobic biological filter tank is provided with a gas pressure sensing mechanism, the gas pressure sensing mechanism is used for controlling the gas pressure sensing mechanism to be insufficient to open when intermediate products in methane gas generated in the anaerobic biological filter tank in the early stage of reaction are more and the methane gas is impure, and the methane gas cannot be collected when the gas pressure sensing mechanism is not enough to open in the anaerobic biological filter tank.

Preferably, the air pressure sensing mechanism comprises a sensing ball body, the ball diameter of the sensing ball body is equal to the caliber of the gas collecting pipeline, the sensing ball body is fixedly connected with a connecting plate through a spring, the connecting plate is fixedly arranged on the inner wall of the gas collecting pipeline through a supporting rod, and the sensing ball body is clamped at the pipe orifice of the gas collecting pipeline in a natural state.

Preferably, in order to increase the reaction rate in the anaerobic biological filter, a stirring device is arranged at the bottom of the anaerobic biological filter, the stirring device comprises a tank body, the tank body is fixedly connected with the bottom wall of the anaerobic biological filter, and a low-boiling-point solvent within the range of 39-61 ℃ is filled in the tank body.

Preferably, a piston block is arranged in the tank body, a screw rod is fixedly arranged on the piston block, one end, far away from the piston block, of the screw rod penetrates out of the tank body, and a stirring sheet is connected to the screw rod in a threaded manner.

Preferably, the stirring sheet comprises a connecting ring, the connecting ring is in threaded connection with the screw, a plurality of stirring blades are fixedly arranged on the periphery of the connecting ring, a fixing column is connected to the bottom of the connecting ring through a bearing, and one end, far away from the connecting ring, of the fixing column is fixedly connected with the bottom wall of the anaerobic biological filter.

Compared with the prior art, the utility model discloses possess following advantage:

1. anaerobism in the anaerobism biofilter is held back, the final product of absorption and decomposition leachate is the methane gas that the calorific value is very high, when containing a large amount of intermediate gas products in the methane gas of early stage, gas pressure in the anaerobism biofilter is not enough to trigger atmospheric pressure response mechanism, gas collecting pipe can not collect methane gas this moment, when the reaction later stage, methane gas content in the anaerobism biofilter is great, and when purity is higher, the response spheroid is pressed to the gas pressure, make methane gas escape from the mouth of pipe of gas collecting pipe, collect, improve the purity of collecting methane gas.

2. The agitating unit that anaerobism biological filter bottom set up in anaerobism biological filter in reaction process, can produce great heat, the evaporation of being heated of low boiling solvent goes up the top piston piece for screw rod upward movement drives the go-between rotatory, thereby drives stirring vane rotation, stirs filtration liquid, improves reaction rate.

Drawings

FIG. 1 is a schematic structural view of an anaerobic biochemical treatment device for leachate according to the present invention;

FIG. 2 is an enlarged schematic view of the structure of part a of the present invention;

fig. 3 is an enlarged schematic view of the structure of the part b of the present invention.

In the figure: 1. an anaerobic biofilter; 2. a liquid discharge conduit; 3. a gas collection conduit; 31. an air pressure sensing mechanism; 311. an induction sphere; 312. a spring; 313. a connecting plate; 314. a support bar; 4. a stirring device; 41. a tank body; 42. a low boiling point solvent; 43. a piston block; 44. a screw; 45. a stirring sheet; 451. a connecting ring; 452. a stirring blade; 46. and (5) fixing the column.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, the anaerobic biochemical treatment device comprises an anaerobic biological filter 1, the anaerobic biological filter 1 is internally loaded with anaerobic organisms and percolate, the anaerobic biological filter 1 is used for intercepting the percolate which is intercepted by the anaerobic organisms and is absorbed and decomposed through a liquid discharge pipeline 2 and transmitting the percolate to a first-level biological facultative anaerobic tank (not shown in the figure), the anaerobic organisms are used for intercepting the methane gas with high heat value, the device is used for collecting the methane gas, but more intermediate product gas exists in the methane gas in the earlier stage of reaction, so a gas collection pipeline 3 is arranged in the anaerobic biological filter 1, and the gas collection pipeline 3 is arranged into a plurality of pipelines.

Referring to fig. 2, an air pressure sensing mechanism 31 is disposed at one end of the gas collecting pipe 3 disposed in the anaerobic biological filter 1, the air pressure sensing mechanism 31 is used for sensing methane gas, when the methane gas generated in the anaerobic biological filter 1 at the earlier stage of the reaction is impure, and the methane gas is not high enough, and the air pressure sensing mechanism 31 is not high enough to be opened at the time, and the methane gas cannot be collected, when the methane gas enters the anaerobic biological filter 1 at the later stage of the reaction and the final product is methane gas with high heat value, the air pressure sensing mechanism 31 is started when the pressure is high enough, the air pressure sensing mechanism 31 includes a sensing sphere 311, the sphere diameter of the sensing sphere 311 is equal to the caliber of the gas collecting pipe 3, the sensing sphere 311 is fixedly connected with a connecting plate 313 through a spring 312, and the connecting plate 313 is fixedly disposed on the inner wall of the gas, in a natural state, the sensing sphere 311 is clamped at the orifice of the gas collecting pipe 3.

In addition, referring to fig. 1 and fig. 3, in order to increase the reaction rate in the anaerobic biological filter 1, a stirring device 4 is disposed at the bottom of the anaerobic biological filter 1, the stirring device 4 includes a tank 41, the tank 41 is fixedly connected to the bottom wall of the anaerobic biological filter 1, a low boiling point solvent 42 in the range of 39-61 ℃ is disposed in the tank 41, a boiling point solvent of 39 ℃ is dichloromethane, a boiling point solvent of 61 ℃ is chloroform, and the lower side is the boiling point solvent of 39 ℃ dichloromethane, a piston block 43 is disposed in the tank 41, a screw 44 is fixedly disposed on the piston block 43, one end of the screw 44, which is far away from the piston block 43, penetrates out of the tank 41, and is in threaded connection with a stirring plate 45, the stirring plate 45 includes a connection ring 451, the connection ring 451 is in threaded connection with the screw 44, a plurality of stirring blades 452 are fixedly disposed on the, one end of the fixing column 46 far away from the connecting ring 451 is fixedly connected with the bottom wall of the anaerobic biological filter 1.

The use principle of the device is as follows:

the final product of the leachate intercepted, adsorbed and decomposed by the anaerobic organisms in the anaerobic biological filter 1 is methane gas with high heat value, when the methane gas contains a large amount of intermediate gas products in the previous period, the gas pressure in the anaerobic biological filter 1 is not enough to trigger the air pressure sensing mechanism 31, at the moment, the gas collecting pipeline 3 cannot collect the methane gas, and when the methane gas content in the anaerobic biological filter 1 is higher and the purity is higher in the later period of the reaction, the sensing ball 311 is pressed by the gas pressure, so that the methane gas escapes from the pipe orifice of the gas collecting pipeline 3 and is collected, and the purity of the collected methane gas is improved; the agitating unit 4 that sets up in anaerobic biological filter 1 bottom, in anaerobic biological filter 1 interior reaction process, can produce great heat, low boiling point solvent 42 is heated and evaporates, goes up top piston block 43 for screw rod 44 upward movement drives the go-between 451 rotatory, thereby drives stirring vane 452 rotatory, stirs filtration liquid, improves reaction rate.

In the present invention, unless otherwise expressly stated or limited, the terms "sliding", "rotating", "fixed", "provided", and the like are to be understood in a broad sense, e.g. as welded connections, as bolted connections, or as integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A leachate anaerobic biochemical treatment device comprises an anaerobic biological filter (1), and is characterized in that the anaerobic biological filter (1) is internally loaded with anaerobic organisms and leachate, the anaerobic biological filter (1) transmits the leachate intercepted, adsorbed and decomposed by the anaerobic organisms to a primary biological facultative anaerobic tank through a drainage pipeline (2), so that a gas collection pipeline (3) is arranged in the anaerobic biological filter (1), one end of the gas collection pipeline (3) in the anaerobic biological filter (1) is provided with a gas pressure induction mechanism (31), the gas pressure induction mechanism (31) comprises an induction ball body (311), the induction ball body (311) is fixedly connected with a connecting plate (313) through a spring (312), the connecting plate (313) is fixedly arranged on the inner wall of the gas collection pipeline (3) through a support rod (314), and a stirring device (4) is arranged at the bottom of the anaerobic biological filter (1).

2. The anaerobic biochemical treatment device for percolate according to claim 1, characterized in that the sphere diameter of the sensing sphere (311) is equal to the caliber of the gas collecting conduit (3).

3. The anaerobic biochemical treatment device for percolate according to claim 1, characterized in that in the natural state the sensing sphere (311) is stuck at the mouth of the gas collection pipe (3).

4. The anaerobic biochemical treatment device for percolate according to claim 1, wherein the stirring device (4) comprises a tank (41), the tank (41) is fixedly connected with the bottom wall of the anaerobic biological filter (1), and the tank (41) is filled with a low boiling point solvent (42) within the range of (39) - (61) DEG C.

5. The anaerobic biochemical treatment device for percolate according to claim 4, wherein a piston block (43) is arranged in the tank body (41), a screw (44) is fixedly arranged on the piston block (43), one end of the screw (44) far away from the piston block (43) penetrates out of the tank body (41), and a stirring sheet (45) is in threaded connection with the screw.

6. The anaerobic biochemical treatment device for percolate according to claim 5, wherein the stirring sheet (45) comprises a connecting ring (451), the connecting ring (451) is in threaded connection with the screw (44), a plurality of stirring blades (452) are fixedly arranged on the periphery of the connecting ring (451), a fixing column (46) is in bearing connection with the bottom of the connecting ring (451), and one end of the fixing column (46) far away from the connecting ring (451) is fixedly connected with the bottom wall of the anaerobic biological filter (1).