Quinones-modified biological vector and application thereof in accelerating microbial denitrifying process

Abstract

The invention relates to a quinones-modified biological vector and application thereof in accelerating a microbial denitrifying process. The quinones-modified biological vector is prepared by performing a modification reaction on a vector by using quinones. The preparation method for the quinones-modified biological vector comprises the following steps of: performing the modification reaction in the aqueous solution of methylene-bis-naphthalene sulfonate, wherein the vector, the quinones, the methylene-bis-naphthalene sulfonate and water are in the weight part ratio of 20-30:10-20:0.5-5:500-1,000; adjusting the pH to be 5 to 9; and reacting for 3 to 10 hours with stirring at the temperature of 60 to 120 DEG C. The invention also comprises the application of the quinones-modified biological vector in accelerating the microbial denitrifying process. The quinones-modified biological vector has the advantages of high microbial compatibility, simple modification process and low production cost, is suitable for modifying various biological vectors by various quinones, and can strengthen, regulate and control the microbial denitrifying process.

Description

technical field [0001] The invention relates to a biological carrier modified by a quinone compound and its application in accelerating the process of microbial denitrification. Background technique [0002] With the rapid development of industrial and agricultural production and the continuous growth of population, a large amount of untreated or improperly treated nitrogen-containing wastewater has seriously deteriorated the quality of the water environment and caused serious harm to human health and the survival of animals and plants. Nitrogen is the main factor causing eutrophication of water bodies. When a large amount of sewage containing nitrogen nutrients is directly discharged into the receiving water body, it will lead to abnormal growth of algae and other aquatic plants, consume dissolved oxygen in the water, and cause water quality deterioration and aquatic ecology. Destruction of environmental structure; ammonia pollutants in water can continue to be oxidized to ...

AI Technical Summary

Problems solved by technology

However, most of the current biological denitrification treatment technologies still have two bottleneck problems: (1) relatively high investment and operating costs for processes and equipment; (2) low efficiency of biological denitrification

[0003] In the past 20 years, many studies have found that redox mediators can catalyze and strengthen the anaerobic biotransformation of pollutants such as azo dyes, nitroaromatic amines, polyhalogenated compounds, perchlorate, and arsenic, and provide efficient biological denitrification for pollutants. Provides new research ideas, but there is currently no research on quinone-modified biocarriers to accelerate the anaerobic biodegradation of these pollutants

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