Method for removing carbon and nitrogen pollutants in waste water in one step

A pollutant, carbon and nitrogen technology, applied in the field of water treatment, can solve the problems of separate nitrification and denitrification reactions, slow proliferation of nitrifying bacteria, etc., to achieve the effect of reducing reactor settings and simplifying operating procedures
CN101985376AActive Publication Date: 2011-03-16PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2011-03-16

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Abstract

The invention breaks through the restriction of the traditional autotrophic nitrification and anoxic denitrifying metabolism principle, and discloses a method for removing carbon and nitrogen pollutants in waste water in one step according to physiological feature and metabolism principle of heterotrophic nitrification-aerobic denitrification bacteria. In a single biochemical reactor, mixed solution of the heterotrophic nitrification-aerobic denitrification bacteria and active slurry in a certain proportion is inoculated, after a certain period of aeration is performed, nitrogen and organic substances are removed at the same time, and the efficiency of denitrification and carbon removal is high. By using the method, a traditional biochemical treatment system can be updated and transformedwithout constructing a new building based on the traditional biochemical treatment system, and the operation is convenient and fast. The method overcomes the bottleneck problems that the nitrobacteria propagate slowly, the nitrification and denitrification reactions are performed in sections, and the like.
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Description

technical field

[0001] The invention relates to a sewage treatment method, which belongs to the technical field of water treatment, in particular to a waste water treatment technique for one-step denitrification and carbon removal using heterotrophic nitrification-aerobic denitrification bacteria. Background technique

[0002] Oxygen-consuming pollutants such as various organic carbons and nutrients such as inorganic nitrogen and phosphorus in water bodies are the main reasons for the loss of functions of natural water bodies. Oxygen-consuming pollutants need to consume dissolved oxygen in water, resulting in hypoxia in the water body, followed by putrefaction and fermentation, bacterial growth, and black odor. Excessive intake of nitrogen and phosphorus is the "culprit" that causes eutrophication of water bodies. Eutrophication of water bodies not only affects the use of water bodies, but also endangers human health. Therefore, people have been devoting themselves to devel...

Claims

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