CN209778441U

CN209778441U - outer circulation anaerobic reactor

Info

Publication number: CN209778441U
Application number: CN201920009534.9U
Authority: CN
Inventors: 曹振国
Original assignee: Shanghai Environmental Protection Technology Co Ltd Gordon
Current assignee: Shanghai Environmental Protection Technology Co Ltd Gordon
Priority date: 2019-01-04
Filing date: 2019-01-04
Publication date: 2019-12-13
Anticipated expiration: 2029-01-04

Abstract

The utility model provides an extrinsic cycle anaerobic reactor, include: the reactor comprises a reactor body, a jet aeration device, a three-phase separator and a reflux pump, wherein the reactor body comprises a reaction chamber and a gas-water separation chamber arranged on the upper part of the reaction chamber, the three-phase separator is fixedly arranged in the reaction chamber, a gas outlet of the three-phase separator is communicated with the gas-water separation chamber, and the bottom of the reaction chamber is provided with the jet aeration device. The oxygen supply jet flow of the utility model is in a curve rising state in the reactor, so that the sewage in the reaction chamber is fully contacted with the sludge, the sewage treatment efficiency is high, the recycling of the methane is realized, the methane utilization rate is high, and the loss of the sludge is avoided; the reactor has simple structure and small occupied area, and is suitable for industrial application.

Description

Outer circulation anaerobic reactor

Technical Field

the utility model relates to a sewage treatment device technical field especially relates to an extrinsic cycle anaerobic reactor.

Background

Anaerobic biological treatment is an important method for treating organic wastewater, and anaerobic biological reactors which are applied more at present are upflow anaerobic sludge blanket UASB, internal circulation anaerobic reactor IC and the like. The upflow anaerobic sludge blanket UASB is mainly formed by granular sludge and the action of a three-phase separator, so that the sludge is retained in the reactor, the sludge retention time SRT is longer than the hydraulic retention time HRT, the sludge concentration in the reactor is improved to a certain extent, but the mass transfer process of the reactor is not ideal, and in order to improve the mass transfer effect, the surface hydraulic load and the surface gas production load are required to be improved, so that the sludge is lost, and the treatment effect is influenced. The internal circulation anaerobic reactor IC is obtained by optimizing an upflow anaerobic sludge blanket UASB reactor, has large height-diameter ratio, small floor area, improved organic load, improved load impact resistance due to effluent backflow, internal circulation realized by methane lifting and small power consumption, but has the defects of complicated internal structure of the reactor, easy corrosion of the reactor, low methane utilization rate and the like due to upper and lower internal circulation pipelines.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems existing in the prior art, the utility model aims at providing an outer circulation anaerobic reactor with simple structure, small floor area and high methane utilization rate.

The utility model adopts the following technical scheme:

An external circulation anaerobic reactor comprising: reactor body, efflux aeration equipment, three-phase separator and backwash pump, wherein:

The reactor body comprises a reaction chamber and a gas-water separation chamber arranged at the upper part of the reaction chamber; a reactor water outlet is formed in the upper part of the reactor body and below the liquid level;

The three-phase separator is fixedly arranged in the reaction chamber, and a gas outlet of the three-phase separator is communicated with the gas-water separation chamber; the reaction chamber bottom is equipped with efflux aeration equipment, efflux aeration equipment includes: the device comprises a jet aerator, a water inlet pipe and a first biogas pipe, wherein the water inlet pipe is communicated with an inner nozzle of the jet aerator, and the first biogas pipe is communicated with an outer nozzle of the jet aerator; the gas-water separation chamber is communicated with a gas storage cabinet arranged outside the reactor body through a second methane pipe, and the gas storage cabinet is connected with the first methane pipe;

A water outlet pipe is arranged at the upper part of the reaction chamber and below the three-phase separator, a water outlet hole is arranged on the water outlet pipe, and one end of the water outlet pipe penetrates through the reactor body and is connected with a return pipe arranged outside the reactor body;

The reflux pump is respectively communicated with the reflux pipe and the water inlet pipe, and the water inlet pipe is also connected with the water inlet pipe of the reactor.

In a preferred embodiment, the reactor inlet pipe is provided with a reactor inlet valve for controlling external sewage to enter the reactor body.

In a preferred embodiment, the first biogas pipe is communicated with a plurality of biogas branch pipes, and each biogas branch pipe is connected with one jet aerator.

In a preferred embodiment, the jet aerator is connected to the water inlet pipe, and the jet aerator is provided with a plurality of jet aerators which are arranged on two opposite sides of the water inlet pipe in an equidistant and staggered manner.

in a preferred embodiment, the jet aeration device further comprises a second water inlet pipe, the second water inlet pipe is annular and is communicated with the water inlet pipe, and the jet aerators are arranged at the outer side of the second water inlet pipe at equal intervals.

Preferably, the axis of the jet aerator is parallel to the horizontal plane or maintains an inclination angle towards the bottom of the aeration tank body, and the inclination angle is 0-30 degrees.

In a preferred embodiment, the bottom of the reactor body is provided with at least two supporting seats, and the water inlet pipe is connected with the supporting seats.

in a preferred embodiment, both ends of the water outlet pipe are fixedly connected to the reactor body.

Preferably, the water outlet holes are provided with two or more water outlet holes which are arranged on the water outlet pipe at equal intervals.

In a preferred embodiment, a first biogas valve is arranged on the first biogas pipe.

In a preferred embodiment, the gas holder is communicated with a third biogas pipe, and a third biogas valve is arranged on the third biogas pipe.

compared with the prior art, the utility model provides an outer circulation anaerobic reactor, through the backwash pump with the water suction in the reactor to efflux aeration equipment, the gas in the reactor forms marsh gas through the separation filtration of three-phase separator and catch water room, marsh gas transmits to efflux aeration equipment through the marsh gas pipe behind the gas holder, efflux aeration equipment utilizes the powerful turbulence that forms after efflux and marsh gas mix to reach the air-water mixture, and be the state that the curve rises in the reactor, make the sewage in the reaction chamber fully contact with mud, sewage treatment efficiency is high, and the marsh gas utilization ratio is high; meanwhile, water in the water outlet pipe flows back to the reaction chamber, so that the loss of sludge is avoided; the reactor has simple structure and small occupied area, and is suitable for industrial application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

FIG. 1 is a schematic structural view of an external circulation anaerobic reactor according to example 1;

FIG. 2 is a schematic view of the structure of a jet aeration apparatus according to example 2;

Illustration of the drawings:

1. A reactor body; 11. a reactor water inlet pipe; 12. a water outlet of the reactor; 13. a reactor inlet valve; 2. a reaction chamber; 21. a jet aerator; 211. a biogas branch pipe; 22. a water inlet pipe; 23. a reflux pump; 24. a water outlet pipe; 25. a return pipe; 26. a water outlet hole; 27. a first biogas pipe; 29. a first biogas valve; 28. a supporting seat; 29. a second water inlet pipe; 3. a steam-water separation chamber; 32. a gas storage cabinet; 33. a second biogas pipe; 35. a third biogas pipe; 36. a third biogas valve; 4. a three-phase separator.

Detailed Description

The utility model provides an extrinsic cycle anaerobic reactor, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the attached drawing and lifts the example the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

it should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, and it should be understood that such used data may be interchanged where appropriate. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such system, article, or apparatus.

Example 1

In the present embodiment, as shown in fig. 1, an external circulation anaerobic reactor includes a reactor body 1, a jet aeration device, a three-phase separator 3, and a reflux pump 23. Wherein, the reactor body 1 comprises a lower reaction chamber 2 and an upper gas-water separation chamber 3. The three-phase separator 4 is fixedly arranged at the upper part of the reaction chamber 2, and the gas outlet of the three-phase separator is communicated with the gas-water separation chamber 3. The bottom of the reaction chamber 1 is provided with a jet aeration device, the jet aeration device comprises a jet aerator 21, a water inlet pipe 22 and a first biogas pipe 27, the first biogas pipe 27 is provided with a plurality of biogas branch pipes 271, and each biogas branch pipe 271 is communicated with an outer nozzle of the jet aerator 21. The jet aerator 21 is fixedly or detachably connected to the water inlet pipe 22 and is communicated with the water inlet pipe 22 through a water inlet thereof. The jet aerators 21 are equidistantly and alternately distributed on two opposite sides of the water inlet pipe 22, and form an inclination angle of 10 degrees with the horizontal line and inclined towards the bottom of the reactor body 1. The arrangement of the jet aerator 21 which is slightly inclined downwards can prevent sludge from depositing at the bottom of the reactor body 1, and the jet flows move to the upper part of the reaction chamber in a curve shape, thereby increasing the contact area of sewage and sludge and improving the reaction efficiency. At least two supporting seats 28 are arranged at the bottom of the reactor body 1, and the water inlet pipe 22 is connected with the supporting seats 28.

As shown in fig. 1, the upper portion of the reaction chamber is provided with a water outlet pipe 24, the water outlet pipe 24 is fixedly connected to two opposite sides of the reactor body 1, and the water outlet pipe 24 is provided with a plurality of water outlet holes 26. A return pipe 25 disposed outside the reactor body 1 communicates with the outlet pipe 24. The return pipe 25 and the inlet pipe 22 are connected to a return pump 23, respectively. Sewage in the upper part of the reaction chamber 2 can enter the water outlet pipe 24 through the water outlet hole 26, and then is pumped to the water inlet pipe 22 through the return pipe 25 by the return pump 23, so that the normal operation of the jet aerator 21 is maintained. The three-phase separator 4 can separate solid, gas and liquid in the reaction chamber 2 in three phases, the solid and the liquid are circularly reacted in the reaction chamber 2, the gas enters the steam-water separation chamber 3, water vapor is condensed back to the reaction chamber 2 in the steam-water separation chamber 3, and the residual gas, namely methane, is connected to the gas storage cabinet 32 through the second methane pipe 33. The gas holder 32 is respectively communicated with a first biogas pipe 27 and a third biogas pipe 35, the first biogas pipe 27 is provided with a first biogas valve 29, and the second biogas pipe 35 is provided with a second biogas valve 36.

The reflux pump 23 pumps water in the reaction chamber 2 to a water inlet of the jet aerator 21, biogas in the reactor body 1 is separated in the gas-water separation chamber 3 and is transmitted to the gas storage cabinet 32 through the second biogas pipe 33, the gas storage cabinet 32 is communicated with the first biogas pipe 27 to provide a biogas source for the jet aerator 21, the jet aerator 21 utilizes strong turbulence formed after jet and biogas are mixed to achieve gas-water mixing, and the jet aerator is in a curve rising state in the reaction chamber 2, so that sewage in the reaction chamber 2 is fully contacted with sludge particles, and the reaction efficiency is high. The gas storage tank 32 can also be connected with a heat exchanger or other methane utilization equipment through a third methane pipe 35 to fully utilize the redundant methane, thereby further improving the utilization rate of the methane. The first biogas pipe 27 is provided with a first biogas valve 29 for controlling whether the gas holder 32 can enter the jet aerator 21. The third biogas pipe 35 is provided with a third biogas valve 36 for adjusting the pressure in the gas holder 32 and the biogas inlet amount of the biogas utilization device.

A reactor water outlet 12 is provided at the upper part of the reactor body and below the liquid level, and the treated water can be discharged. The inlet pipe 22 is further connected with a reactor inlet pipe 11, and a reactor inlet valve 13 is arranged on the reactor inlet pipe 11, so that the inlet of external sewage can be controlled by arranging the reactor inlet pipe 11 and the reactor inlet valve 13.

Example 2

The configuration of the reactor body 1, the three-phase separator 3, and the reflux pump 23 of the external circulation anaerobic reactor according to the present embodiment is the same as that of embodiment 1, and only the jet aeration device is different from this, and only the differences will be described in detail.

As shown in FIG. 2, the jet aeration device comprises a jet aerator 21, a water inlet pipe 22, a second water inlet pipe 29 and a first biogas pipe 27. The first biogas pipe 27 communicates with the outer nozzle of each jet aerator 21. The second inlet conduit 29 is annular in shape and communicates with the inlet conduit 22. The jet aerator 21 is fixedly or detachably connected to the second water inlet pipe 29 and is communicated with the second water inlet and outlet pipe 29 through the water inlet thereof. The jet aerators 21 are equidistantly arranged outside the second inlet pipe 29 and are inclined at an angle of 5 ° to the horizontal to the bottom of the reactor body 1. The jet aerators 21 distributed annularly avoid the dead angle of jet flow in the reaction chamber 2, and the arrangement of the jet aerators 21 inclined slightly downwards can prevent sludge from depositing at the bottom of the reactor body 1.

the present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.

Claims

1. An external circulation anaerobic reactor, comprising: reactor body, efflux aeration equipment, three-phase separator and backwash pump, wherein:

the three-phase separator is fixedly arranged in the reaction chamber, and a gas outlet of the three-phase separator is communicated with the gas-water separation chamber; the bottom of reaction chamber is equipped with efflux aeration equipment, efflux aeration equipment includes: the device comprises a jet aerator, a water inlet pipe and a first biogas pipe, wherein the water inlet pipe is communicated with an inner nozzle of the jet aerator, and the first biogas pipe is communicated with an outer nozzle of the jet aerator; the gas-water separation chamber is communicated with a gas storage cabinet arranged outside the reactor body through a second methane pipe, and the gas storage cabinet is connected with the first methane pipe;

2. The external circulation anaerobic reactor according to claim 1, wherein the jet aerators are connected to the water inlet pipe, and a plurality of jet aerators are arranged on two opposite sides of the water inlet pipe in an equidistant and staggered manner.

3. the external circulation anaerobic reactor according to claim 1, wherein the jet aeration device further comprises a second water inlet pipe, the second water inlet pipe is annular and is communicated with the water inlet pipe, and the jet aerator is arranged at the outer side of the second water inlet pipe at equal intervals.

4. the external circulation anaerobic reactor according to claim 1, wherein the axis of the jet aerator is parallel to the horizontal plane or maintains an inclination angle towards the bottom of the aeration tank body, and the inclination angle is 0-30 °.

5. the external circulation anaerobic reactor according to claim 1, wherein the gas holder is in communication with a third biogas pipe, and a third biogas valve is provided on the third biogas pipe.