Sewage treatment method for room temperature nitrosation-anaerobic ammoxidation coupling symbiotic denitrification device for municipal sewage

An anammox and urban sewage technology, which is applied in the field of sewage treatment of urban sewage nitrification-anammox coupled symbiotic denitrification device at room temperature, can solve the problem of nitrification-anammox process covering a large area and operating costs Advanced problems, to achieve the effect of reducing oxygen consumption, reducing operating costs, and huge energy-saving benefits
CN102531172BInactive Publication Date: 2013-05-29NORTHEAST FORESTRY UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEAST FORESTRY UNIVERSITY
Publication Date
2013-05-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a room temperature nitrosation-anaerobic ammoxidation coupling symbiotic denitrification device for municipal sewage and a sewage treatment method and relates to a sewage treatment method, solving the technical problems that in the existing nitration-anaerobic ammoxidation process, occupied area is large and operation cost is high. The method comprises the following steps of: carrying out film formation with an intermittent film formation mode; introducing municipal sewage; completing the removal of COD (chemical oxygen demand) in the outer barrel and generating a small amount of NO2<-1>-N; and introducing mixed sludge subjected to nitrosation and anaerobic ammoxidation into the outer barrel so as to realize nitrosation-anaerobic ammoxidation coupling symbiotic denitrification. According to the invention, a continuous operation mode is adopted for the device; the device is small in occupied area, and the effective volume of a structure is reduced; and the device is simple and convenient in management, high in treatment efficiency, low in operation cost and the like, and specifically aims at domestic sewage having the characteristics of low substrate concentration and large water yield.
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Description

technical field

[0001] The invention relates to a sewage treatment method; in particular, it relates to a sewage treatment method of an urban sewage normal temperature nitrosation-anaerobic ammonium oxidation coupled symbiotic denitrification device. Background technique

[0002] At present, the treatment methods of urban domestic sewage in my country and other countries in the world mainly adopt aerobic treatment (such as activated sludge method, etc.) and anaerobic treatment (such as USAB, etc.). Although they can achieve better treatment effects, there are still many problems. , Problems in aerobic treatment: (1) high energy consumption; (2) high sludge output; (3) need to add organic carbon source; (4) inconvenient management. Problems in anaerobic treatment: (1) The COD and BOD values ​​of the effluent after treatment are high; (2) The hydraulic retention time is long and produces foul odor.

[0003] Compared with the traditional whole-process nitrification-denitrificat...

Claims

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