CN215249844U

CN215249844U - Double-circulation efficient anaerobic reactor

Info

Publication number: CN215249844U
Application number: CN202120873987.3U
Authority: CN
Inventors: 李俊
Original assignee: Shanghai Qinyan Environmental Protection Technology Co ltd
Current assignee: Shanghai Qinyan Environmental Protection Technology Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-21
Anticipated expiration: 2031-04-26

Abstract

The utility model belongs to the technical field of anaerobic reactors, a dual-cycle high-efficiency anaerobic reactor is disclosed, which comprises a reactor body, a water distribution system is arranged at the inner bottom of the reactor body, the inner middle part of the reactor body is a main treatment area, the input end of the water distribution system is connected with a return pipe, the input end of the return pipe is positioned at the top of the main treatment area, the top of the main treatment area is provided with a circulating pipe, a support girder is arranged inside the reactor body, and a three-phase separator is arranged above the support girder; the utility model can ensure the full mixing of the mud and water in the reactor due to the existence of the double circulation system; the double circulation systems are internal circulation, so the operation cost is low; the alkalinity in the anaerobic effluent can be fully utilized, and the buffering capacity and the shock load resistance of the system are greatly improved; the mixing effect of the reactor can be optimized by adjusting the rotating speed of the circulating pump.

Description

Double-circulation efficient anaerobic reactor

Technical Field

The utility model belongs to the technical field of anaerobic reactor, concretely relates to high-efficient anaerobic reactor of dual cycle.

Background

With the rapid development of the society and the industry in China, the generated wastewater not only harms the environment, but also hinders the development of the industry. Wherein, most of wastewater discharged by industries such as chemical industry and the like belongs to high-concentration organic wastewater, the purpose of treatment is difficult to achieve by utilizing conventional physicochemical and biochemical treatment, and a series of problems of operation management, large investment, high operation cost and the like exist simultaneously. In order to improve the removal efficiency of such waste water, various forms of anaerobic reactors have been invented.

The existing ESGB anaerobic reactor has the following two defects that anaerobic effluent flows back to a water inlet pool of the ESGB anaerobic reactor after passing through a three-phase separator: 1) the energy consumption is high because the water required by circulation needs to be additionally lifted once by the water inlet pump, and the power consumption is increased; 2) can bring the waste gas problem, and then lead to the corrosion problem, the reason is that the sulphate radical in the intaking can be converted the sulphide under anaerobic condition, and partial sulphide can be taken away along with going out water, and when the gravity current of play water flows to anaerobic reactor intake chamber, this partial sulphide can be released, consequently can produce the corrosion problem to the surrounding environment, still can have the potential safety hazard problem when serious.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two Circulation Anaerobic Reactor (Dual Circulation Anaerobic Reactor, DCAR for short) is high and can bring waste gas and then lead to the problem of corruption in order to solve current Anaerobic Reactor energy consumption.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two-cycle high efficiency anaerobic reactor, includes the reactor body, the water distribution system is installed to the inside bottom of reactor body, the inside middle part of reactor body is main treatment area, the input of water distribution system is connected with the back flow, the input of back flow is located the top of main treatment area, the top of main treatment area is provided with the circulating pipe, the internally mounted of reactor body has the support girder, the three-phase separator is installed to the top of supporting the girder.

As the utility model relates to a high-efficient anaerobic reactor of dual cycle is preferred, the input of water distribution system is connected with the inlet tube, and it is interior by the inlet tube entering water distribution system to intake.

As the utility model relates to a high-efficient anaerobic reactor of dual cycle is preferred, still includes the circulating pump, the pipe that absorbs water of circulating pump is connected with the circulating pipe, the output of circulating pipe connect in water distribution system's input, one of them some play water pump into the inlet tube under the effect of circulating pump through the circulating pipe, with the mixed formation mixed water of intaking.

As the utility model relates to a high-efficient anaerobic reactor of dual cycle is preferred, the mixed water is pumped into main treatment area by reactor body bottom through water distribution system.

As the utility model relates to a high-efficient anaerobic reactor of dual cycle is preferred, the rotational speed of circulating pump is adjustable.

As the utility model relates to a high-efficient anaerobic reactor of dual cycle is preferred, the input of three-phase separator is connected in the output of main treatment district, the output of three-phase separator is connected with the outlet pipe, the outlet pipe is used for discharging another part effluent.

As the utility model relates to a high-efficient anaerobic reactor of dual cycle is preferred, the internal diameter mutation of back flow input is regional in order to form the venturi effect, under the venturi effect, partly play water after the main treatment district is handled is flowed to the return pipe in, in the process return pipe backward flow to water distribution system.

Compared with the prior art, the utility model, following beneficial effect has: the utility model can ensure the full mixing of the mud and water in the reactor due to the existence of the double circulation system; the double circulation systems are internal circulation, so the operation cost is low; the alkalinity in the anaerobic effluent can be fully utilized, and the buffering capacity and the shock load resistance of the system are greatly improved; the mixing effect of the reactor can be optimized by adjusting the rotating speed of the circulating pump.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1. a water distribution system; 2. a return pipe; 3. a primary treatment zone; 4. a three-phase separator; 5. a circulation pipe; 6. a circulation pump; 7. a water inlet pipe; 8. a water outlet pipe; 9. a reactor body.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides the following technical solutions: the utility model provides a dual cycle high efficiency anaerobic reactor, including reactor body 9, water distribution system 1 is installed to the inside bottom of reactor body 9, the inside middle part of reactor body 9 is main treatment area 3, main treatment area 3 is used for carrying out biochemical treatment to the liquid by the input of inlet tube 7, water distribution system 1's input is connected with back flow 2, the input of back flow 2 is located main treatment area 3's top, main treatment area 3's top is provided with circulating pipe 5, the internally mounted of reactor body 9 has the support girder, support the top of girder and install three-phase separator 4.

Three phases in the three-phase separation refer to: the separation of gas, liquid and solid, namely biogas generated in the anaerobic process, treated wastewater and anaerobic granular sludge, the principle of the separation is as follows: the biogas can flow upwards in the wastewater, the anaerobic granular sludge has ascending power under the action of the biogas and hydraulic ascending flow, but the self weight of the granular sludge can resist the ascending power, so that a 'swelling' state is formed in the reactor, and the small granular sludge can flow upwards if the small granular sludge cannot overcome the power of the biogas and hydraulic ascending flow. At this time, by arranging the two channels of the fluid channel which is inclined downwards, the atmospheric methane gas separated from the waste water rises to the methane collecting cabin and cannot flow along the descending channel. Thus, the residual wastewater and the granular sludge (especially small granular sludge) wrapped by partial methane microbubbles can flow along the obliquely downward channel, and in the flowing process, the small methane bubbles on the granular sludge can be separated from the surface of the granular sludge to become free methane bubbles and flow upwards along the obliquely downward channel wall, so that the purpose of separating the micro methane bubbles wrapped on the granular sludge is achieved. After most of the methane microbubbles coated by the granular sludge are removed, the relative specific gravity of the granular sludge is increased, the methane microbubbles can overcome the action of hydraulic upward flow and move downwards to be settled in the anaerobic reactor, thereby achieving the purpose of retaining the anaerobic granular sludge. The waste water still flows through the inclined downward channel to the upper part under the action of the hydraulic ascending flow.

Furthermore, the input end of the water distribution system 1 is connected with a water inlet pipe 7, and the inlet water enters the water distribution system 1 through the water inlet pipe 7.

Furthermore, the system also comprises a circulating pump 6, a water suction pipe of the circulating pump 6 is connected with a circulating pipe 5, the output end of the circulating pipe 5 is connected with the input end of the water distribution system 1, and a part of effluent water is pumped into a water inlet pipe 7 through the circulating pipe 5 under the action of the circulating pump 6 and is mixed with inlet water to form mixed water.

Further, the mixed water is pumped from the bottom of the reactor body 9 into the main treatment zone 3 through the water distribution system 1. The mixed water undergoes a biological reaction in the main treatment zone 3 of the reactor, where the biodegradable organic substances are converted into methane and carbon dioxide.

Specifically, the rotational speed of the circulation pump 6 is adjustable. Can be according to the quality of water condition of intaking, through the rotational speed of adjustment circulating pump 6 for the mixed effect of reactor reaches the best, and quality of water is worse, reduces circulating pump 6's rotational speed, and on the contrary, then improves circulating pump 6's rotational speed.

It is worth to say that the input end of the three-phase separator 4 is connected to the output end of the main treatment area 3, the output end of the three-phase separator 4 is connected with a water outlet pipe 8, and the water outlet pipe 8 is used for discharging the other part of the outlet water.

Furthermore, the inner diameter of the input end of the return pipe 2 is suddenly changed to form a venturi effect area, and under the action of the venturi effect, a part of effluent treated by the main treatment area 3 flows into the return pipe 2 and flows back into the water distribution system 1 through the return pipe 2.

The utility model discloses a theory of operation and use flow: the water distribution system 1 is arranged at the bottom of the reactor body 9 and is connected with the return pipe 2; the three-phase separator 4 is arranged on a middle supporting crossbeam of the reactor body 9; the circulating pipe 5 is arranged below the three-phase separator 4 and is connected with a water suction pipe of a circulating pump 6;

the inlet water and the outlet water from the circulating pump 6 are mixed and then pumped into the reactor from the bottom of the reactor body 9 through the efficient water distribution system 1, and simultaneously are rapidly mixed with the treated water from the return pipe 2; the mixed water then undergoes a biological reaction in the main treatment zone 3 of the reactor, where the biodegradable organic substances are converted into methane and carbon dioxide; after the main treatment area 3 is degraded, part of the effluent passes through the circulating pipe 5 under the action of the circulating pump 6, the water is pumped into the water inlet pipe 7 and is rapidly mixed with the inlet water, the other part of the effluent automatically flows into the water distribution system 1 through the Venturi principle and is rapidly mixed with the inlet water, so that the mixing effect inside the reactor is greatly improved, the alkalinity of the effluent is simultaneously utilized, the impact load resistance of the system is greatly improved, and the running cost can be saved. Finally, the remaining effluent passes through the three-phase separator 4 and is discharged from the top of the reactor body 9. Meanwhile, the mixing effect of the reactor can be optimized by adjusting the rotating speed of the circulating pump 6 according to the water quality of the inlet water.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A dual-cycle high-efficiency anaerobic reactor is characterized in that: including reactor body (9), water distribution system (1) is installed to the inside bottom of reactor body (9), the inside middle part of reactor body (9) is main treatment area (3), the input of water distribution system (1) is connected with back flow (2), the input of back flow (2) is located the top of main treatment area (3), the top of main treatment area (3) is provided with circulating pipe (5), the internally mounted of reactor body (9) has the support girder, three-phase separator (4) are installed to the top of supporting the girder.

2. A dual cycle high efficiency anaerobic reactor according to claim 1, wherein: the input end of the water distribution system (1) is connected with a water inlet pipe (7), and water enters the water distribution system (1) through the water inlet pipe (7).

3. A dual cycle high efficiency anaerobic reactor according to claim 2, wherein: the water distribution system is characterized by further comprising a circulating pump (6), a water suction pipe of the circulating pump (6) is connected with the circulating pipe (5), the output end of the circulating pipe (5) is connected to the input end of the water distribution system (1), and a part of effluent water is pumped into the water inlet pipe (7) through the circulating pipe (5) under the action of the circulating pump (6) and is mixed with the inlet water to form mixed water.

4. A dual cycle high efficiency anaerobic reactor according to claim 3, wherein: the mixed water is pumped into the main treatment area (3) from the bottom of the reactor body (9) through the water distribution system (1).

5. A dual cycle high efficiency anaerobic reactor according to claim 3, wherein: the rotating speed of the circulating pump (6) can be adjusted.

6. A dual cycle high efficiency anaerobic reactor according to claim 1, wherein: the input of three-phase separator (4) is connected in the output of main treatment district (3), the output of three-phase separator (4) is connected with outlet pipe (8), outlet pipe (8) are used for discharging another part delivery water.

7. A dual cycle high efficiency anaerobic reactor according to claim 1, wherein: the inside diameter of the input end of the backflow pipe (2) is suddenly changed to form a Venturi effect area, and under the action of the Venturi effect, part of effluent treated by the main treatment area (3) flows into the backflow pipe (2) and flows back into the water distribution system (1) through the backflow pipe (2).