CN201272713Y

CN201272713Y - Sewage treatment bioreactor

Info

Publication number: CN201272713Y
Application number: CNU2008201622469U
Authority: CN
Inventors: 金月祥
Original assignee: Jiaxing Huanke Environmental Engineering Co Ltd
Current assignee: Jiaxing Huanke Environmental Engineering Co Ltd
Priority date: 2008-08-11
Filing date: 2008-08-11
Publication date: 2009-07-15
Anticipated expiration: 2018-08-11

Abstract

The utility model relates to a bioreactor for wastewater treatment, which comprises a reaction tower, a water inlet pipe, a water outlet pipe and an air inlet pipe. The water inlet pipe is communicated with the top portion of the reaction tower, the water outlet pipe is communicated with the lateral wall of the reaction tower, and the air inlet pipe is communicated with the lower end of the reaction tower. The bioreactor for wastewater treatment is characterized by further comprising a filling frame, a water distributor and a water-retaining cone, the top portion of the reaction tower is further equipped with an exhaust hood, the filling frame is disposed at the middle portion of the water distributor, the water distributor runs through the filling frame to vertically stand at the center of the reaction tower, a flared end of the water distributor is positioned at the upper end of the reaction tower, a reduced end of the water distributor is located at the lower end of the reaction tower, an water outlet of the water inlet pipe is located in the flared port of the water distributor, the water-retaining cone is disposed below the reduced end of the water distributor, and the conical end of the water-retaining cone faces the reduced end of the water distributor. The bioreactor for wastewater treatment has the advantages that microorganisms and active sludge in the reaction tower can be effectively prevented from running away, and the active sludge can be prevented from bulking.

Description

Bioreactor for sewage treatment

Technical field

The utility model relates to technical field of sewage, particularly bioreactor for sewage treatment.

Background technology

Using in wastewater treatment at present is A/O technology more widely.The sewage biological treatment system that the A/O biological treatment is made up of the reaction of anaerobic and aerobic two portions.After sewage enters anaerobic pond, under the condition of anaerobic, utilizing the anaerobion effect, mainly is the effect of anerobe, handles the organism in the waste water.Hydrogen acceptor is not a free oxygen in the process, but organic substance or oxygenatedchemicals, as SO ₄ ^2-, NO ₃ ^-, NO ₂ ^-, CO ₂Deng.Therefore, final meta-bolites is not simple CO ₂And H ₂O, but some low molecule organic matters, CH ₄, H ₂S, NH ₄ ⁺Deng.Anaerobic process mainly rely on the bacterium of three big main monoids, the combined action that is hydrolysis acid formers, hydrogen-producing acetogenic bacteria and methane-producing bacteria will adopt anaerobic treatment can remove a part of COD, outside the load that alleviates follow-up aerobic treatment, also can utilize the enzymolysis of anerobe, open the chain link or the phenyl ring of polymer recalcitrant substance, make it to become small-molecule substance than readily biodegradable, even acidifying becomes materials such as VFA (VFA), alcohols, improve waste water B/C ratio, help follow-up aerobic treatment.

The anaerobic treatment water outlet enters Aerobic Pond, and the metabolism oxygenolysis pollutants in waste water matter of oxygen animalcule self is made good use of in O pond just.It is that aerobic microbiological and aerobic-anaerobic microbe participate in that aerobe is handled, and having under the condition of dissolved oxygen, organism is decomposed into CO ₂And H ₂O, and the metabolic process that gives off energy.The hydrogen of in the oxidation operation process, deviating from be with oxygen as hydrogen acceptor, organic decomposition is more thorough, final product is the minimum CO of energy content ₂And H ₂O, so it is many to release energy, accretion rate is fast, meta-bolites is stable.

The biological treatment of existing Sewage treatment systems routine has active bacterium mud method and contact oxidation method.Active bacterium mud method pond holds big, bacterium mud refluxes big, bacterium mud takes place easily expand, and bacterium mud refluxes from second pond, because second pond mainly acts on and carries out mud-water separation, hydraulic detention time is long, and the aerobic bacteria mud of backflow often enters hold concurrently oxygen even anaerobic state because of overstand, cause active bacterium mud bacterial activity poor, in case after refluxing, the big weak effect of bacterium mud amount, and have easy oxygen consumption shortcomings such as (power consumptions).But active bacterium mud method less investment is simple in structure, easy to maintenance.And the biological contact oxidation process of biofilm, routine does not need bacterium mud to reflux, and a large amount of bacterium mud backflow artifact films are because of bacterium mud concentration height, and easily oxygen consumption reduces treatment effect.Bacterium mud can not take place to expand, handles higher relatively, but invest bigger, complex structure, maintenance difficult.The operation of two kinds of technologies all exists sludge output big, and residue bacterium mud causes technical problems such as secondary pollution, poor processing effect easily.

Generally all adopt the out of door treatment tank in the existing technology, sewage water inlet pipe is set in the pond, rising pipe and inlet pipe, microorganism and carrier float in the pond, water inlet pipe is squeezed into sewage in the pond by intake pump, inlet pipe is carried air by gas blower in the pond, rising pipe will be extracted out through the sewage after the microbiological treatment by going out water pump.There is following shortcoming in the treatment tank of this structure: microorganism and carrier are discharged with water easily, when rising pipe discharges water, take away a large amount of microorganisms easily, cause microorganism concn decline in the reaction tank, and wastewater treatment efficiency is low, and the working cost height.The reaction tank of this structure, microorganism and filler can be deposited at the bottom of the pond, in the sewage treatment process, sludge bulking take place easily.

Summary of the invention

The technical problems to be solved in the utility model is: microorganism is taken away the easy expansible technical problem of mud in the reaction tank easily in the existing sewage disposal reaction tank by water.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: bioreactor for sewage treatment, comprise reaction tower, water inlet pipe, rising pipe and inlet pipe, water inlet pipe is communicated with the top of reaction tower, rising pipe is communicated with the sidewall of reaction tower, and inlet pipe is communicated with the lower end of reaction tower, it is characterized in that: also comprise stuffing frame, water distributor and dash circular cone, the top of reaction tower also is provided with extraction hood, and the middle part of reaction tower is provided with stuffing frame, and water distributor passes the center that stuffing frame is erected in reaction tower, the water distributor flared end is positioned at the upper end of reaction tower, and water distributor footpath mouthful end is positioned at the lower end of reaction tower; The water inlet pipe water outlet is positioned at the water distributor enlarging, the dash circular cone is set below mouthful end of water distributor footpath, and the awl end of dash circular cone is towards water distributor footpath mouthful end.

On the sidewall of reaction tower upper end overflow weir is set, overflow weir connects rising pipe.

The section of giving vent to anger of inlet pipe connects some aerators.

Described aerator is annular micro-hole aerator.

Reaction tower top and water inlet pipe are provided with sludge pipe side by side.

The middle part of reaction tower is provided with stuffing frame, and microorganism and filler are fixed on the stuffing frame, and sewage enters the reaction tower top from water inlet pipe, flows to reaction tower bottom through water distributor, by with dash circular cone buffering, reduce the kinetic energy of water inlet, alleviate into water to the impact of reaction tower.The inlet pipe of reaction tower bottom discharges tiny bubble by aerator, bubble fully contacts with sewage, flow in the top of steam mixed solution from the reaction tower bottom toward reaction tower, through the stuffing frame at reaction tower middle part, contact with microorganism on the stuffing frame, microorganism is adsorbed, degrades pollutants in sewage, sewage after microbiological treatment continues the upper reaches, arrive the overflow weir position of reaction tower upper end, sewage enters overflow weir, flows out reaction tower by rising pipe at last.Microbial population on the stuffing frame forms microbial film attached on the immobilized filler at filling surface, and sewage can fully contact with microorganism like this, can prevent the loss of microorganism and reactivity mud simultaneously.

The beneficial effects of the utility model are: sewage is from flowing out reaction tower, and water distributor and the uniform and stable water distribution of dash circular cone in the tower alleviate into water impact, can effectively prevent the loss of interior microorganism of reaction tower and active sludge, prevents activated sludge bulking.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Embodiment

As shown in Figure 1, bioreactor for sewage treatment comprises reaction tower 1, water inlet pipe 2, rising pipe 3 and inlet pipe 4, the reaction tower top is provided with extraction hood 5, one side of extraction hood is provided with water inlet pipe 2 and feeds in the reaction tower, and extraction hood 5 opposite sides and water inlet pipe 2 are provided with sludge pipe 6 side by side and feed in the reaction tower.On the sidewall of reaction tower upper end overflow weir 7 is set, overflow weir 7 is communicated with the rising pipe 3 that is arranged on reaction tower upper end sidewall.The reaction tower middle part is provided with stuffing frame 8, evenly arrange microorganism and filler on the stuffing frame 8, water distributor 9 passes stuffing frame 8 and is erected at the reaction tower center, and the upper end enlarging 9a of water distributor is positioned at the reaction tower top, and the water outlet 2a of water inlet pipe and the mud mouth 6a of sludge pipe are positioned at the enlarging 9a of water distributor.The footpath mouth 9b of water distributor is positioned at the bottom of reaction tower, and a dash circular cone 10 is set under it, and the awl end of dash circular cone is towards water distributor footpath mouthful end.Inlet pipe 4 is communicated with the lower end of reaction tower, and the section of the giving vent to anger 4a of inlet pipe is provided with 7 annular micro-hole aerators 11.The bottom of reaction tower 1 also is provided with evacuated tube 12 and inspection window 13.

Claims

1, bioreactor for sewage treatment, comprise reaction tower, water inlet pipe, rising pipe and inlet pipe, water inlet pipe is communicated with the top of reaction tower, rising pipe is communicated with the sidewall of reaction tower, inlet pipe is communicated with the lower end of reaction tower, it is characterized in that: also comprise stuffing frame, water distributor and dash circular cone, the top of reaction tower also is provided with extraction hood, the middle part of reaction tower is provided with stuffing frame, water distributor passes the center that stuffing frame is erected in reaction tower, and the water distributor flared end is positioned at the upper end of reaction tower, and water distributor footpath mouthful end is positioned at the lower end of reaction tower; The water inlet pipe water outlet is positioned at the water distributor enlarging, the dash circular cone is set below mouthful end of water distributor footpath, and the awl end of dash circular cone is towards water distributor footpath mouthful end.

2, bioreactor for sewage treatment according to claim 1 is characterized in that: on the sidewall of reaction tower upper end overflow weir is set, overflow weir connects rising pipe.

3, bioreactor for sewage treatment according to claim 1 is characterized in that: the section of giving vent to anger of inlet pipe connects some aerators.

4, bioreactor for sewage treatment according to claim 3 is characterized in that: described aerator is annular micro-hole aerator.

5, bioreactor for sewage treatment according to claim 1 is characterized in that: reaction tower top and water inlet pipe are provided with sludge pipe side by side.