CN216377644U

CN216377644U - Anaerobic reactor

Info

Publication number: CN216377644U
Application number: CN202123185356.1U
Authority: CN
Inventors: 姜笔存; 许兴原; 于伟华
Original assignee: Nanjing Innovation Centre For Environmental Protection Industry Co ltd
Current assignee: Nanjing Innovation Centre For Environmental Protection Industry Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-26
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses an anaerobic reactor, and belongs to the technical field of environmental protection. The anaerobic reactor comprises a reaction tank body, wherein a biogas chamber, a water collecting tank, a three-phase separator and a water distributor are arranged in the reaction tank body, the water collecting tank is positioned at the bottom of the biogas chamber, the three-phase separator is positioned between the biogas chamber and the water distributor, the water collecting tank is connected with the three-phase separator through a water collecting pipe, the stability of a mud bed is effectively improved through the special design of the water collecting tank and the three-phase separator, a good mud-water separation effect is realized, and the reactor is easier to maintain.

Description

Anaerobic reactor

Technical Field

The utility model belongs to the technical field of environmental protection, and particularly relates to an anaerobic reactor.

Background

The anaerobic reactor is widely applied to sewage treatment, and particularly has the characteristics of impact resistance and high load in the treatment of high-concentration organic wastewater. Generally, the anaerobic reactor adopts a bottom water distribution pipe for water distribution, the ascending flow rate is controlled by the water inlet flow, and when the water inlet flow is unstable, the ascending flow rate fluctuates, the mud layer is unstable, and the treatment effect fluctuates.

The utility model patent application of application publication No. CN103588295A, application publication date 2014, 2.19 discloses a baffled anaerobic reactor, which comprises a body and a cover matched with the body, wherein the body is internally provided with a plurality of baffles which divide the inner space of the body into a plurality of reaction chambers, the volumes of the reaction chambers are different from each other, and the heights of the baffles are sequentially reduced from inside to outside; the cover is provided with a sleeve plate matched with the baffle plate; the sludge treatment device is characterized in that a sludge inlet is formed in the bottom of the body, a water outlet is formed in the side edge of the body, and an air outlet is formed in the cover. The baffling type anaerobic reactor can realize the sludge retention time which is high enough, and the solid and the liquid in the reactor are fully mixed and contacted, thereby ensuring the good growth of microorganisms.

Application publication No. CN104591383A, application publication No. 2015, 5.6.3, discloses a novel EGSB anaerobic reactor, which comprises a water distributor, a granular sludge reaction zone and a three-phase separator arranged above the granular sludge reaction zone, wherein the water distributor is detachable and consists of a plurality of perforated water distribution pipes which are uniformly distributed at the bottom, two ends of the perforated water distribution pipes extend out of the reactor, two ends of each water distribution pipe are provided with valves, and sewage to be treated enters the reactor through one end of the water distributor; the three-phase separator comprises a main separator and a plurality of secondary separators which are uniformly distributed around the main separator, each separator is cylindrical, a funnel-shaped isolation component which is reversed is arranged inside the separator, a reflecting plate is arranged below the isolation component, the upper space of the reactor is separated into a gas channel, a gas chamber and a settling zone through the isolation component, and overflow weir grooves are arranged on two sides above the reactor.

However, the existing three-phase separator in the anaerobic reactor generally adopts a herringbone folded plate three-phase separator, the disturbance of gas influences the solid-liquid separation effect, the mud leakage condition can occur, and in addition, the anaerobic reactor adopts a perforated pipe for water distribution, and the dredging is difficult after the pipeline is blocked.

SUMMERY OF THE UTILITY MODEL

1, problems to be solved

The utility model provides an anaerobic reactor, aiming at the problems of low stability of a mud bed, poor solid-liquid separation effect and the like in the anaerobic reactor in the prior art. The anaerobic reactor comprises a reaction tank body, wherein a biogas chamber, a water collecting tank, a three-phase separator and a water distributor are arranged in the reaction tank body, the biogas chamber is positioned above the inner part of the reaction tank body and communicated with an exhaust hole, the water distributor is positioned below the inner part of the reaction tank body and connected with a waste water main inlet, the water collecting tank is positioned at the bottom of the biogas chamber, the three-phase separator is positioned between the biogas chamber and the water distributor, the water collecting tank is connected with the three-phase separator through a water collecting pipe, the stability of a mud bed is effectively improved through the special design of the water collecting tank and the three-phase separator, a good mud-water separation effect is realized, and the reactor is easier to maintain.

2, technical scheme

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model discloses an anaerobic reactor, which comprises a reaction tank body, wherein the top of the reaction tank body is provided with an exhaust hole, the bottom of the reaction tank body is provided with a main wastewater inlet, the upper part of the reaction tank body is provided with a main wastewater outlet, a biogas chamber, a water collecting tank, a three-phase separator and a water distributor are arranged in the reaction tank body, the biogas chamber is positioned above the interior of the reaction tank body and communicated with the exhaust hole, the water distributor is positioned below the interior of the reaction tank body and connected with the main wastewater inlet, the water collecting tank is positioned at the bottom of the biogas chamber, the three-phase separator is positioned between the biogas chamber and the water distributor, and the water collecting tank is connected with the three-phase separator through a water collecting pipe.

Preferably, the three-phase separator comprises a gas collection communication port, a guide cylinder and a precipitation part, the gas collection communication port is located at the top of the three-phase separator and is connected with the biogas chamber, the guide cylinder is located in the middle of the inside of the three-phase separator, the top of the guide cylinder is connected with the gas collection communication port, the bottom of the guide cylinder is connected with the precipitation part, and the water collection tank is connected with the guide cylinder through a water collection pipe.

Preferably, the three-phase separator further comprises a water outlet hole and a water outlet groove, the water outlet hole is located at the upper portion of the peripheral side of the three-phase separator, the water outlet groove is located outside the water outlet hole, the water outlet groove is connected with the waste water main outlet through a water outlet pipe, and in the three-phase separator, a space between the horizontal position of the water outlet groove and the gas collection communication port forms a gas collection portion.

Preferably, the gas collection communication port is higher than the upper part of the water collecting tank.

Preferably, the lower part of the guide shell of the three-phase separator has an enlarged radius, and the bottom of the guide shell is provided with a reflecting plate.

Preferably, a return pipe is arranged at the bottom of the settling part of the three-phase separator, and the settling part is connected with a return water inlet pump through the return pipe.

Preferably, the return pipe is provided with a return valve and a return flowmeter.

Preferably, a backwashing port is arranged at one side of the bottom of the reaction tank body relative to the main wastewater inlet, and the backwashing port is connected with a backwashing pump through a pipeline.

Preferably, a backwashing nozzle is arranged in the sedimentation part of the three-phase separator and is connected with a backwashing pump through a backwashing pipe.

Preferably, the backwash spray-head is arranged along the side wall of the lower part of the settling section.

3, beneficial effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the anaerobic reactor, wastewater is subjected to variable flow reflux treatment, is mixed with reflux water, and enters the water distribution device through the wastewater inlet main port, the water distribution device uniformly discharges the wastewater into the reaction tank body, the biological sludge bed is flushed up from bottom to top in the reaction tank body to form a suspended state, pollutants are fully contacted with sludge, and gas generated in the pollutant degradation process flows upwards along with water flow and is released into the methane chamber at most of the top of the reaction tank body;

(2) according to the anaerobic reactor, a mud-water mixture is converged into the water collecting pipe through the water collecting tank, the water collecting pipe is communicated with the three-phase separator, the mud-water mixture is guided by the guide cylinder to enter the settling part, wastewater enters the water outlet tank through the water outlet hole upwards in the settling part, sludge is separated downwards and returns to the bottom of the reaction tank body through variable-flow backflow water inlet treatment, a small amount of residual gas is converged into the gas collecting part, the upper part of the gas collecting part is open and communicated with the biogas chamber, and the small amount of gas is separated in the three-phase separator because most of the gas is released before entering the three-phase separator, so that mud-water separation in the settling part is more stable;

(3) according to the anaerobic reactor, the return pipe is provided with the return valve and the return flowmeter, when the inflow flow fluctuates, the total inlet flow of the wastewater is controlled by adjusting the return valve, so that the ascending water flow in the reaction tank body is relatively stable, the mixing of sludge and wastewater is ensured, and the treatment effect is more stable;

(4) the anaerobic reactor disclosed by the utility model is simple in structure, reasonable in design and easy to manufacture.

Drawings

FIG. 1 is a structural front view of an anaerobic reactor of the present invention;

FIG. 2 is a structural plan view of an anaerobic reactor according to the present invention;

in the figure:

100. a reaction tank body; 101. an exhaust hole; 102. a biogas chamber; 103. a main wastewater outlet;

104. a water collection tank; 105. a water collection pipe; 106. a water outlet pipe; 107. a main wastewater inlet;

108. backwashing the opening; 200. a three-phase separator; 201. a gas collection communication port;

202. a draft tube; 203. a reflective plate; 204. a gas collection part; 205. a settling section;

206. a water outlet hole; 207. a water outlet groove; 300. a water distributor; 301. a reflux valve;

302. a reflux flow meter; 303. a reflux water inlet pump; 304. a reflux water inlet total flow meter;

305. a return pipe; 401. a backwash pump; 402. backwashing the tubes; 403. and (4) backwashing the spray head.

Detailed Description

The utility model is further described with reference to specific examples.

Example 1

As shown in fig. 1, an anaerobic reactor of this embodiment includes a reaction tank 100, an exhaust hole 101 is provided at the top of the reaction tank 100, a total wastewater inlet 107 is provided at the bottom of the reaction tank 100, and a total wastewater outlet 103 is provided at the upper part of the reaction tank 100; and a biogas chamber 102, a water collecting tank 104, a three-phase separator 200 and a water distributor 300 are arranged in the reaction tank 100, the biogas chamber 102 is positioned above the interior of the reaction tank 100 and communicated with the exhaust hole 101, the water distributor 300 is positioned below the interior of the reaction tank 100 and connected with a wastewater main inlet 107, the water collecting tank 104 is positioned at the bottom of the biogas chamber 102, the three-phase separator 200 is positioned between the biogas chamber 102 and the water distributor 300, and the water collecting tank 104 is connected with the three-phase separator 200 through a water collecting pipe 105.

The three-phase separator 200 comprises a gas collection communication port 201, a guide cylinder 202, a settling part 205, a water outlet hole 206 and a water outlet groove 207, wherein the gas collection communication port 201 is positioned at the top of the three-phase separator 200 and connected with the biogas chamber 102, the guide cylinder 202 is positioned at the middle position inside the three-phase separator 200, the top of the guide cylinder 202 is connected with the gas collection communication port 201, the bottom of the guide cylinder 202 is connected with the settling part 205, the water collection groove 104 is connected with the guide cylinder 202 through a water collection pipe 105, the water outlet hole 206 is positioned at the upper part of the peripheral side of the three-phase separator 200, the water outlet groove 207 is positioned outside the water outlet hole 206, the water outlet groove 207 is connected with a main wastewater outlet 103 through a water outlet pipe 106, and in the three-phase separator 200, a space between the horizontal position of the water outlet groove 207 and the gas collection communication port 201 forms the gas collection part 204.

It should be noted that the gas collection communication port 201 is higher than the upper part of the water collection tank 104, the lower part of the draft tube 202 has an enlarged radius, the bottom of the draft tube 202 is provided with the reflection plate 203, the bottom of the settling part 205 is provided with the return pipe 305, the settling part 205 is connected with the return water inlet pump 303 through the return pipe 305, and the return pipe 305 is provided with the return valve 301 and the return flow meter 302. Preferably, the return valve 301 is an electric regulating valve, and the return water inlet pump 303 is a variable frequency pump.

Waste water enters the reaction tank body 100 from the lower water distributor 300, gas is released to the biogas chamber 102 from the upper part, the waste water enters the water collecting tank 104, the water collecting tank 104 is connected to the guide shell 202 of the three-phase separator 200 through the water collecting pipe 105, solid-liquid separation is carried out at the settling part 205, the gas is enriched in the gas collecting part 204 and then enters the biogas chamber 102 through the gas collecting communicating port 201, solid sludge sinks into the lower part of the settling part 205 and is connected to the inlet of the backflow water inlet pump 303 through the backflow pipe 305, liquid enters the water outlet tank 207 from the water outlet hole 206, the water outlet tank 207 is a sealing mechanism and is directly connected to the main waste water outlet 103 through the water outlet pipe 106.

As shown in fig. 2, the water collecting grooves 104 are arranged uniformly as much as possible, the reaction tank 100 may be a square tank or a circular tank, and the structure of the three-phase separator 200 includes, but is not limited to, a square.

Before entering the backflow water inlet pump 303, the wastewater is mixed with backflow water, the backflow proportion is adjusted through the backflow valve 301, the backflow flow meter 302 displays the absolute backflow amount, the backflow water inlet total flow meter 304 displays the total output flow of the backflow water inlet pump 303, and the backflow water inlet pump 303 controls the total output flow through frequency conversion. During initial operation, the reflux valve 301 is fully opened, a certain total output flow rate of the reflux water inlet pump 303 frequency control is adjusted, the flow rate of the reflux flow meter 302 is consistent with that of the reflux water inlet total flow meter 304 and is set as a reference flow rate Q1, water is started to enter, the flow rate of the reflux water inlet total flow meter 304 is increased and fed back to the reflux valve 301 to reduce the opening degree, so that the flow rate of the reflux water inlet total flow meter 304 is maintained near Q1, during operation, when the water inlet flow rate is fluctuated, the flow rate of the reflux water inlet total flow meter 304 is fed back to the reflux valve 301 to automatically adjust and stabilize the flow rate of the reflux water inlet total flow meter.

It should be further noted that a backwash opening 108 is provided at the bottom of the reaction tank 100 on the side opposite to the wastewater inlet 107, the backwash opening 108 is connected to a backwash pump 401 through a pipe, and a backwash nozzle 403 is arranged along the side wall of the lower part of the settling part 205 of the three-phase separator 200, and the backwash nozzle 403 is connected to the backwash pump 401 through a backwash pipe 402.

The mixed liquid of the inflow water and the return water uniformly enters the bottom of the reaction tank body 100 through the water distributor 300 and upwards, and the sludge suspension state is maintained. When the water distributor 300 is blocked, the backwashing pump 401 pumps backwashing water into the water distributor 300 through the backwashing port 108 to dredge the sewage blockage. In addition, a backwashing nozzle 403 provided in the sedimentation part 205 of the three-phase separator 200 is connected to a backwashing pump 401 through a backwashing pipe 402, and when the sedimentation part 205 is silted up, the backwashing pump 401 is turned on to be dredged.

The present invention and its embodiments have been described above schematically, the description is not restrictive, the data used are only one of the embodiments of the present invention, and the actual data combination is not limited to this. Therefore, if the person skilled in the art receives the teaching, the embodiments and examples similar to the above technical solutions shall not be designed in an inventive manner without departing from the spirit of the present invention, and shall fall within the protection scope of the present invention.

Claims

1. The utility model provides an anaerobic reactor, includes that the retort body (100), retort body (100) top is provided with exhaust hole (101), and retort body (100) bottom is provided with waste water total import (107), and retort body (100) upper portion is provided with waste water total export (103), its characterized in that: the reaction tank body (100) is internally provided with a biogas chamber (102), a water collecting tank (104), a three-phase separator (200) and a water distributor (300), the biogas chamber (102) is positioned above the interior of the reaction tank body (100) and is communicated with an exhaust hole (101), the water distributor (300) is positioned below the interior of the reaction tank body (100) and is connected with a wastewater main inlet (107), the water collecting tank (104) is positioned at the bottom of the biogas chamber (102), the three-phase separator (200) is positioned between the biogas chamber (102) and the water distributor (300), and the water collecting tank (104) is connected with the three-phase separator (200) through a water collecting pipe (105).

2. An anaerobic reactor according to claim 1, wherein: the three-phase separator (200) comprises a gas collection communication port (201), a guide cylinder (202) and a precipitation part (205), the gas collection communication port (201) is located at the top of the three-phase separator (200) and connected with the biogas chamber (102), the guide cylinder (202) is located in the middle of the inside of the three-phase separator (200), the top of the guide cylinder (202) is connected with the gas collection communication port (201), the bottom of the guide cylinder (202) is connected with the precipitation part (205), and the water collection tank (104) is connected with the guide cylinder (202) through a water collection pipe (105).

3. An anaerobic reactor according to claim 2, wherein: the three-phase separator (200) further comprises a water outlet hole (206) and a water outlet groove (207), the water outlet hole (206) is located at the upper portion of the peripheral side of the three-phase separator (200), the water outlet groove (207) is located outside the water outlet hole (206), the water outlet groove (207) is connected with a waste water main outlet (103) through a water outlet pipe (106), and in the three-phase separator (200), a space between the horizontal position of the water outlet groove (207) and the gas collection communication port (201) forms a gas collection portion (204).

4. An anaerobic reactor according to claim 2, wherein: the gas collection communication port (201) is higher than the upper part of the water collection tank (104).

5. An anaerobic reactor according to claim 2, wherein: the lower part of a guide shell (202) of the three-phase separator (200) is provided with an expanded radius, and the bottom of the guide shell (202) is provided with a reflecting plate (203).

6. An anaerobic reactor according to claim 2, wherein: the bottom of a settling part (205) of the three-phase separator (200) is provided with a return pipe (305), and the settling part (205) is connected with a return water inlet pump (303) through the return pipe (305).

7. An anaerobic reactor according to claim 6, wherein: the return pipe (305) is provided with a return valve (301) and a return flowmeter (302).

8. An anaerobic reactor according to any one of claims 1 to 7, wherein: one side of the bottom of the reaction tank body (100) relative to a main wastewater inlet (107) is provided with a backwashing port (108), and the backwashing port (108) is connected with a backwashing pump (401) through a pipeline.

9. An anaerobic reactor according to claim 8, wherein: a backwashing spray head (403) is arranged in a settling part (205) of the three-phase separator (200), and the backwashing spray head (403) is connected with a backwashing pump (401) through a backwashing pipe (402).

10. An anaerobic reactor according to claim 9, wherein: the backwashing water nozzles (403) are arranged along the side wall of the middle lower part of the settling part (205).