Delftia with aerobic denitrifying capability and method of treating waste water by the same

Abstract

The invention discloses a primotest clustered hair single cell bacterium (Comamonas testosteroni) WXZ-9 CGMCC No.1797 strain with aerobic denitrifying property and a method to denitrify the waste water; which is characterized by the following: possessing strong tolerance degree for dissolved oxygen; deacidizing nitrate and nitrite with distinctive speed under the condition of 10-98% saturated dissolved oxygen; seeding to active sludge; proceeding enriched culture; realizing the aerobic anti-nitration.

Description

technical field

[0001] The invention relates to a method for biological denitrification treatment of wastewater by adopting Delftia tsuruhatensis WXZ-9 CGMCC No.1797 bacterial strain under aerobic conditions. The strain has strong tolerance to dissolved oxygen, and can use nitrate and nitrite as electron acceptors under the condition of 10-98% saturated dissolved oxygen. Nitrate and nitrite in sewage can be reduced to gaseous products in an aerobic environment to denitrify wastewater. Background technique

[0002] Among the various denitrification methods that have been applied so far, biological denitrification is still the main method in wastewater denitrification treatment. The traditional wastewater biological denitrification treatment process is: the organic nitrogen compounds in the sewage are first converted into ammonia nitrogen in the biochemical process, and the ammonia nitrogen is converted into nitrate and nitrite by autotrophic nitrifying bacteria in the nitrif...

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