Operation mode and apparatus of short distance nitration-anaerobic ammoxidation batched biomembrane denitrogenation

A sequencing batch biofilm and anaerobic ammonium oxidation technology, which is applied in the fields of environmental protection and sewage treatment, can solve the problems of carcinogenicity, infrastructure investment, increased land occupation, and high energy consumption, so as to reduce poisoning and avoid poisoning effect, the effect of shortening the reaction time
CN1927739AInactive Publication Date: 2007-03-14HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN UNIV
Publication Date
2007-03-14
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

One kind of short range nitrifying-anaerobic aminoxidizing sequencing batch type denitrifying biomembrane mode and plant is disclosed. The limited aerating mode with real-time control of the sewage temperature inside the reactor and high frequency alternation between aeration and anaeration can inhibit the growth of nitrite oxidizing bacteria and denitrifying bacteria so that the aminoxidizing bacteria and the anaerobic aminoxidizing bacteria become the dominant bacteria in the nitrifying and denitrifying stages. In the nitrifying stage, nitrification is stopped in the nitrite step; and in the denitrifying stage, ammonia nitrogen acts as the direct electron donor to reduce nitrite. The plant is provided with fixed spherical composite stuffing with spherical shell of polypropylene and filled inside biological composite material. Sectional discrete water feeding mode is adopted to feed the sewage to be treated in four stages into the reactor.
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Description

technical field

[0001] The invention belongs to the technical fields of environmental protection and sewage treatment, and in particular relates to a short-range nitrification-anammox sequence batch biofilm denitrification operation mode and device. Background technique

[0002] Traditional biological denitrification is mainly accomplished through two stages of nitrification and denitrification. In the nitrification stage, the conversion of ammonia nitrogen to nitrate nitrogen is divided into two consecutive reactions, first the conversion of ammonia nitrogen to nitrite by ammonia oxidizing bacteria, and then the conversion of nitrite to nitrate by nitrite oxidizing bacteria. This process has two deficiencies. First, it consumes a lot of energy. The ammonia nitrogen nitrification process requires additional energy to supply oxygen. The pre-denitrification system needs to be equipped with a relatively large reflux of the mixed liquid, which also increases energy consumption. ...

Claims

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