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Annular aeration biological filter sewage low carbon treatment reactor

A biological aerated filter and carbon treatment technology, applied in the fields of environmental protection and sewage treatment, can solve the problems of poor denitrification effect, easy generation of dead water area, etc. Effect

Active Publication Date: 2014-02-12
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lateral flow biological aerated filter also has many disadvantages, such as easy to produce dead water area, poor nitrogen removal effect, etc.

Method used

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  • Annular aeration biological filter sewage low carbon treatment reactor
  • Annular aeration biological filter sewage low carbon treatment reactor
  • Annular aeration biological filter sewage low carbon treatment reactor

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Embodiment Construction

[0024] like figure 1 , image 3 As shown, the low-carbon sewage treatment reactor of the annular biological aerated filter includes a water inlet pipe 1, a packing frame 2, an aeration device 5, an outlet pipe 6 and a tank body 7, and a pretreatment system can be combined if necessary. The pool body is composed of three circular corridors. The outer ring corridor and the middle ring of the corridor are arranged alternately in the aerobic zone A and the anoxic zone B. The inner ring corridor is the sedimentation zone, and they are connected in turn.

[0025] In the aerobic zone and the anoxic zone, a filler frame 2 is arranged, and the filler frame is filled with porous iron-rich filler. In order to reduce the possibility of clogging, there is a certain distance between each packing frame, and there is also a certain gap between the packing frame and the pool wall, and in the same corridor, the gaps between adjacent packing frames and the pool wall are staggered.

[0026] In ...

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Abstract

An annular aeration biological filter sewage low carbon treatment reactor comprises a pool body, a water inlet pipe, an aeration device and a water outlet pipe. The pool body is composed of three annular galleries from inside to outside, the outer annular gallery and the middle annular gallery serve as reaction zones, filler frames are installed in the reaction zones, space is reserved between the filler frames, gaps are reserved between the filler frames and a pool wall, and the inner annular gallery serves as a settling zone. One end of the outer annular gallery is connected with the water inlet pipe, the other end of the outer annular gallery is communicated with a middle ring through the galleries, inlet water of the inner annular gallery comes from overflow of the middle ring, outlet water is connected with the central water outlet pipe, aerobic zones and anoxic zones are arranged in the an outer ring and the middle ring in staggered mode, and aerating devices are arranged below filler frames of the aerobic zones. The reactor is definite in partition, the aerobic zones are high in dissolved oxygen, and denitrification processes of the anoxic zones avoid existence of dissolved oxygen. By means of gathering of microorganisms on fillers, residence time of sludge is long, and the reactor has the advantages of being strong in control of nitrous oxide and other greenhouse gases, not easy to block, simple in structure, good in treatment effect, stable and reliable in operation, low in operating cost and the like.

Description

technical field [0001] The invention belongs to the technical fields of sewage treatment and environmental protection, and in particular relates to a sewage treatment reactor for an aerated biological filter based on a biofilm method. Background technique [0002] Biological aerated filter, referred to as BAF, is a new biofilm sewage treatment process developed in Europe and the United States in the late 1980s. This process has the functions of removing SS, COD, BOD, nitrification, nitrogen removal, phosphorus removal, and AOX ) role. The biological aerated filter integrates biological oxidation and interception of suspended solids, saves the subsequent sedimentation tank (secondary sedimentation tank), has a volume load, a large hydraulic load, a short hydraulic retention time, requires less infrastructure investment, and has good effluent quality. Low power consumption and low operating cost. [0003] The traditional biological aerated filter is prone to clogging. In pra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 柴宏祥何强康威刘洪达王伟杰方俊华
Owner CHONGQING UNIV
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