印染废水生物脱氮技术进展.

Combined with the biological nitrogen removal technology of printing and dyeing wastewater at home and abroad, this paper briefly describes the difficulties of nitrogen removal from printing and dyeing wastewater and the main nitrogen circulation modes in the process of biological nitrogen removal. Taking ammoniation, nitrification and denitrification as an example in the mainstream nitrogen removal process, the process mechanism and the main microorganisms involved are discussed, and the advantages and disadvantages of the current treatment effects of nitrification and denitrification in printing and dyeing wastewater are analyzed. The results show that there are a lot of organic nitrogen and inorganic nitrogen in the comprehensive printing and dyeing wastewater, and biological nitrogen removal is still the mainstream nitrogen removal process in printing and dyeing wastewater. In addition, to strengthening the ammoniation, nitrification and denitrification processes involved in the nitrogen removal process of printing and dyeing wastewater, sulfur autotrophic denitrification(SAD)and anaerobic ammonia oxidation(Anammox)are the most promising development directions biological nitrogen removal technology of printing and dyeing wastewater. In the future, it is necessary to further carry out research on the mechanism and application of SAD and Anammox based on the water quality characteristics of printing and dyeing wastewater to prove the feasibility of its engineering application. [ABSTRACT FROM AUTHOR]