CN203451286U

CN203451286U - Two-phase double-circulation anaerobic expanded bed bioreactor

Info

Publication number: CN203451286U
Application number: CN201320539127.1U
Authority: CN
Inventors: 刘仁龙; 易德君; 崔良军; 唐小林; 王伟建
Original assignee: ZUNYI TIANLI ENVIRONMENTAL ENGINEERING Co Ltd
Current assignee: ZUNYI TIANLI ENVIRONMENTAL ENGINEERING Co Ltd
Priority date: 2013-09-02
Filing date: 2013-09-02
Publication date: 2014-02-26
Anticipated expiration: 2023-09-02

Abstract

The utility model discloses a two-phase double-circulation anaerobic expanded bed bioreactor comprising a three-phase separation distributor, a muddy water refluxing pipe, a mixed water distributor, a water inlet pipe, a methane downcomer, a drainage weir, a methane riser, an air lift riser, a shell and a filler expanded bed which is arranged in the middle of the shell, wherein a suspended filler is arranged on the filler expanded bed; four flow guide plates are arranged above the filler expanded bed, two of the flow guide plates are arranged on the air lift riser, and the other two flow guide plates are arranged on the inner wall of the shell; an air lift gas connecting hood connected with the air lift riser is arranged below the filler expanded bed; two symmetrical flow guide cones are arranged on the inner wall of the shell below the filler expanded bed; two symmetrical three-phase separators connected with the methane riser are arranged above the flow guide plates. The two-phase double-circulation anaerobic expanded bed bioreactor disclosed by the utility model solves the problem that sludge is carried out of the reactor by sewage due to a high flow speed, and the filler increases the contact reaction interval between active sludge and sewage to further promote the propagation and increase of methane-producing bacteria, so that the treatment effect of high-concentration organic sewage is improved.

Description

Two-phase double-cycling anaerobic expanded bed bio-reactor

Technical field

The utility model relates to a kind of two-phase double-cycling anaerobic expanded bed bio-reactor.

Background technology

The various anaerobic reactors that present stage is used can classify as high, medium and low speed reactor.Highly be less than 10 meters, the anaerobic reactor of upflow velocity between 0.5-1.0 m/h classifies as middling speed anaerobic reactor, and middling speed anaerobic reactor COD volumetric loading is less than 5kgCOD.m .d conventionally, during start-up and operation, can use floc sludge.Intermediate reactor floor space is moderate, reduced investment, and operation is convenient, but shortcoming is to be suitable for high density water quality and can biochemical poor sewage, and the anaerobic sludge of system easily runs off.It is representative that high-rate anaerobic reactor be take the IC that granule sludge reaction bed system is feature, its HRT(hydraulic detention time) short, volumetric loading is high, conventionally COD volumetric loading is greater than 5kgCOD.m .d, but start-up and operation must be used granule sludge, more than aspect ratio requires 2:1 conventionally, more than upflow velocity requires 1m/h, and granule sludge poor growth, needs often to supplement fresh granule sludge.

Utility model content

The utility model is for the deficiencies in the prior art, thereby a kind of two-phase double-cycling anaerobic expanded bed bio-reactor is provided.

Two-phase double-cycling anaerobic expanded bed bio-reactor, it comprises three phase separation divider, muddy water return line, mixes water distributor, water inlet pipe, biogas downtake, drainage weir, biogas upcast, air lift upcast and housing, between three phase separation orchestration and housing, be connected with respectively muddy water return line, biogas downtake, the gentle riser of putting on of biogas upcast, water inlet pipe is located at lower housing portion one side, housing inner bottom part center is provided with mixing water distributor, and housing internal upper part both sides are respectively provided with a drainage weir; This reactor also includes a filler expanded bed of being located at middle part in housing, is equipped with floating stuffing on it; Above filler expanded bed, be provided with four flow deflectors, wherein two flow deflectors are located on air lift upcast, are located at inner walls for another two; Below filler expanded bed, be provided with an air lift gas skirt being connected with air lift upcast; The inner walls of its below is provided with two symmetrical deflection cones; Above flow deflector, be also provided with two triphase separators that are connected with biogas upcast symmetrically.

Adopt the beneficial effect of such scheme to be: two pump around circuit modes that the utility model adopts anaerobic sludge and sewage stripping reflux and biogas to reflux, increase the velocity of flow of disposing of sewage in reactor, improve anerobic sowage processing efficiency, the setting of expanded bed, both solved granule sludge and by sewage, taken soon out of the problem of reactor because of flow velocity, specific surface area because of filler increases again, the contact reacts that has increased active sludge and sewage is interval, further promote breeding and the growth of methane-producing bacteria, improved the treatment effect of high concentration organic sewage.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model two-phase double-cycling anaerobic expanded bed bio-reactor;

In figure: 1--three phase separation divider, 2--muddy water return line, 3--mixing water distributor, 4-air lift gas skirt, 5--water inlet pipe, 6-filler expanded bed, 7-deflection cone, 8--biogas downtake, 9-triphase separator, 10--drainage weir, 11--biogas upcast, 12--air lift upcast, 13-thrust-augmenting nozzle, 14--housing.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Fig. 1, two-phase double-cycling anaerobic expanded bed bio-reactor, it comprises three phase separation divider 1, muddy water return line 2, mixes water distributor 3, water inlet pipe 5, biogas downtake 8, drainage weir 10, biogas upcast 11, air lift upcast 12 and housing 14, between three phase separation orchestration 1 and housing 14, be connected with respectively muddy water return line 2, biogas downtake 8, the gentle riser 12 of putting on of biogas upcast 11, water inlet pipe 5 is located at housing 14 bottom one sides, housing 14 inner bottom part centers are provided with mixes water distributor 3, and housing 14 internal upper part both sides are respectively provided with a drainage weir 10; It is characterized in that: this reactor also includes a filler expanded bed 6 of being located at housing 14 interior middle parts, is equipped with floating stuffing on it; Above filler expanded bed 6, be provided with four flow deflectors 13, wherein two flow deflectors 13 are located on air lift upcast 12, are located at housing 14 inwalls for another two; Below filler expanded bed 6, be provided with an air lift gas skirt 4 being connected with air lift upcast 12; Housing 14 inwalls of its below are provided with two symmetrical deflection cones 7; Above flow deflector 13, be also provided with two triphase separators 9 that are connected with biogas upcast 11 symmetrically.

The utility model technical process is as follows:

By water pump, the water inlet pipe 5 through two-phase double-cycling anaerobic expanded bed bio-reactor bottom enters in this reactor high-concentration waste water, so that certain flow velocity is bottom-up, flow and the floating stuffing larger with specific surface area in being installed on reactor contacts, common stirring action because of the suspension of filler self and the biogas of make progress mobile sewage and the generation of bottom mud generation anaerobic reaction, filler moves freely in reactor reaction zone, when the continuous process of sewage is equipped with the reactor of Moveable packings, biofilm growth formation on filler, microorganism amount reproduction on microbial film, increased biomass, form a complicated microecosystem, under anaerobic environment, at heterotrophism, autotrophic microorganism, aerobic-anaerobic microbe and obligate anaerobes utilize the C in water, N, P etc. carry out metabolism, by a large amount of adsorption-decomposition functions of various complicated organic molecule quilt in waste water, change into biogas (methane), the materials such as carbonic acid gas, thereby play the effect of purifying waste water.

In two-phase circulation anaerobic expanded bed bio-reactor, secondary air water separator is set, organic pollutant in waste water is converted to biogas, after being collected by one-level air water separator, along riser tube and carrying muddy water mixed solution air lift to the gas-liquid separator assembly of reactor head, isolated biogas some is discharged from the top biogas vent pipe of gas-liquid separator, another part is introduced the expanded bed bio-reaction zone at reactor middle part by pipeline, realize the internal recycle of gas, due to stronger current shearing and collision and the friction between filler, the thicker microbial film self falling of filler carry on expanded bed, produce effect and solved the aging problem of microbial film, promoted contacting of matrix and fresh granules mud, making sludge bulking bed district remove organic ability strengthens.On the other hand, the muddy water mixed solution that gas-liquid separator separates goes out turns back to the high loading treatment zone of reactor bottom along downtake, and fully mix with granule sludge and the water inlet of bottom, realized mixed solution in follow, cause higher liquid and gas up-flow speed simultaneously, promote breeding and the growth of methane-producing bacteria, strengthened the treatment effect of high concentration organic sewage.

Claims

1. two-phase double-cycling anaerobic expanded bed bio-reactor, it comprises three phase separation divider (1), muddy water return line (2), mix water distributor (3), water inlet pipe (5), biogas downtake (8), drainage weir (10), biogas upcast (11), air lift upcast (12) and housing (14), between three phase separation orchestration (1) and housing (14), be connected with respectively muddy water return line (2), biogas downtake (8), the gentle riser (12) of putting on of biogas upcast (11), water inlet pipe (5) is located at housing (14) bottom one side, housing (14) inner bottom part center is provided with mixes water distributor (3), housing (14) internal upper part both sides are respectively provided with a drainage weir (10), it is characterized in that: this reactor also includes a filler expanded bed (6) of being located at middle part in housing (14), is equipped with floating stuffing on it, in filler expanded bed (6) top, be provided with four flow deflectors (13), wherein two flow deflectors (13) are located at air lift upcast (12) above, are located at housing (14) inwall for another two, in filler expanded bed (6) below, be provided with an air lift gas skirt (4) being connected with air lift upcast (12), housing (14) inwall of its below is provided with two symmetrical deflection cones (7), in flow deflector (13) top, be also provided with two triphase separators (9) that are connected with biogas upcast (11) symmetrically.