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Aeration biological filter device and process for carbon-nitrogen pre-separation

A biological aerated filter, pre-separation technology, applied in water/sewage multi-stage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve complex problems, increase carbon dioxide emissions, and low utilization rate of carbon sources and other problems, to achieve the effect of reducing suspended solids content, reducing emissions, and improving utilization rate

Inactive Publication Date: 2012-02-01
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0005] In order to solve the complex pretreatment of the biological aerated filter in the prior art, the utilization rate of carbon source in the raw water is low, and the emission of carbon dioxide is also increased, and frequent backwashing is required to maintain the stability of the biological aerated filter Operation problem, the invention provides a kind of carbon and nitrogen pre-separated biological aerated filter device and process

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  • Aeration biological filter device and process for carbon-nitrogen pre-separation
  • Aeration biological filter device and process for carbon-nitrogen pre-separation

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 A biological aerated filter device for pre-separation of carbon and nitrogen is shown, including an inlet pump 1 connected and arranged according to the water inlet sequence, a denitrification tank 2 for denitrifying the raw water from the inlet pump 1, and a denitrification tank 2 for denitrifying the raw water from the inlet pump 1. The mud-water mixture in the denitrification tank 2 is carried out in a nitrogen blow-off tank 4 for blowing off nitrogen, a sedimentation tank 7 in which the mud-water mixture from the nitrogen blow-off tank 4 is precipitated, and the supernatant from the sedimentation tank 7 is The biological aerated filter inlet pump 9 that pressurizes and lifts the liquid, and the biological aerated filter 10 that performs aerated biological filtration on the sewage from the biological aerated filter in...

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Abstract

The invention relates to an aeration biological filter device and an aeration biological filter process for carbon-nitrogen pre-separation, which are used for waste water treatment. The invention provides an aeration biological filter device, which comprises a water inlet pump, a denitrification pool for the denitrification of water from the water inlet pump, a nitrogen stripping pool for nitrogen stripping of the water from the denitrification pool, a sedimentation pool for settling water from the nitrogen stripping pool, an aeration biological filter water inlet pump, an aeration biologicalfilter, a sludge return pipe and an aeration biological filter effluent return pipe, wherein the water inlet pump, the denitrification pool, the nitrogen stripping pool, the sedimentation pool, the aeration biological filter water inlet pump and the aeration biological filter are connected according to a water inlet sequence; and the denitrification pool is an activated sludge process denitrification pool. The invention also provides the aeration biological filter process for the carbon-nitrogen pre-separation. The device and the process have the advantages of solving the problems of complex pretreatment, frequent back flush and insufficient utilization of carbon source in raw water of the conventional aeration biological filter.

Description

【Technical field】 [0001] The invention relates to sewage treatment, in particular to a carbon and nitrogen pre-separated aerated biological filter device and process in sewage treatment. 【Background technique】 [0002] Biological Aerated Filter (BAF) is a new sewage treatment process developed in the late 1980s and early 1990s on the basis of ordinary biological filters and referring to the water supply filter process. The biggest feature of the biological aerated filter is that it integrates biological oxidation and interception of suspended solids, saves the subsequent secondary sedimentation tank, and simplifies the treatment process on the premise of ensuring the treatment effect. [0003] However, the biological aerated filter process has high requirements on the quality of the influent water, especially the suspended solids (Suspended Substance, SS) in the water quality, which requires a complex pretreatment process to pretreat the raw water. For example, the commonly ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 董文艺李继王宏杰刘杰廖凤京王维康刘莉莎
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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