Denitriding microbial nest based on basalt fiber filling materials and culture method thereof

Abstract

The invention discloses a denitriding microbial nest based on basalt fiber filling materials and a culture method thereof. The denitriding microbial nest is attached onto a basalt fiber beam, and sequentially comprises an aerobic layer, an anoxic layer, an anaerobic layer and the like from outside to inside. Through the combination of the basalt fiber filling materials, a bioreactor and an aerator, the sewage is treated; the air and active sludge realize the strong mixing through the aerator; an ascending flow is generated; circulation flows are formed at the two sides of the basalt fiber filling materials; under the hydraulic effect, the basalt fiber beam performs coating and support on the active sludge attached onto the surface of the fiber beam; under the layered coverage of the basalt fiber on the active sludge, the spherical or spheroid active sludge microorganism aggregates, i.e., the denitriding microbial nests are gradually formed. The denitriding microbial nests are subjected to domestication culture; the goal of removing nitrogen in the sewage is achieved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a denitrification microbial nest based on basalt fiber filler and a cultivation method thereof. Background technique [0002] In the past 20 years, China's economy has developed rapidly, urbanization has advanced rapidly, and the scale of cities has expanded severely. A large amount of substandard industrial wastewater and domestic sewage have been discharged directly into rivers, lakes and seas without treatment, resulting in a large accumulation of nitrogen and phosphorus in them, and the water body is rich. Nutritization is becoming more and more serious, and the water environment problems caused by it are frequent. In April 2015, the new "Water Ten Measures" pointed out that the discharge of nitrogen, phosphorus and other pollutants will be fully controlled. By the end of 2017, the effluent should meet the "Pollutant Discharge Standards for Urban Sewa...

AI Technical Summary

Problems solved by technology

The separation membrane of the former is easy to block and difficult to clean; the mixed aeration method in the reactor of the latter has a huge impact on the granular sludge, and the anoxic and anaerobic environment formed is limited, the denitrification efficiency is low, and the actual operation process is complicated and difficult to scale up

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