环境保护科学2024，Vol.50Issue(1)：140-147,8.DOI:10.16803/j.cnki.issn.1004-6216.202302054
硫自养反硝化系统处理化工园区尾水特征分析
Characteristic analysis of tail water treatment in chemical industry parks by sulfur autotrophic denitrification system
摘要
Abstract
A sulfur autotrophic denitrification plant was used to denitrify the end drainage of a pesticide chemical park water treatment system.After the system was successfully started and operated smoothly,the nitrate simulated wastewater and the actual wastewater were run at room temperature of about 16℃and HRT of 22 h.The test results showed that the average removal rate of NO3--N was 87%and the average concentration of effluent was 21 mg/L after running for 25 d in the simulated wastewater,and the average concentration of the effluent was 17 mg/L,indicating that the denitrification system had good denitrification effect and stable operation.High-throughput sequencing analysis of microorganisms at different stages in the reactor was carried out.The results at the phylum level showed that Proteobacteria was the largest bacterial phylum,and Campilobacterota transitioned from the simulated wastewater to the actual wastewater operation stage,and the abundance increased significantly.At the genus level,Sulfurimonas and Thiobacillus were typical bacterial genera existing in the system.Both of them had the function of sulfur autotrophic denitrification,and their abundance was greatly improved after the reaction.Thiobacillus showed superiority in sulfur autotrophic denitrification and played an important role in inorganic sulfur oxidation and nitrate reduction.关键词
农药化工尾水/硫自养反硝化/脱氮/微生物/高通量测序Key words
pesticide chemical tail water/sulfur autotrophic denitrification/denitrification/microorganism/high-throughput sequencing分类
资源环境引用本文复制引用
姚苏娥,刘诗月,马永光,马茜雅,梁吉艳..硫自养反硝化系统处理化工园区尾水特征分析[J].环境保护科学,2024,50(1):140-147,8.基金项目
辽宁省教育厅科学研究经费项目(LQGD2020014) （LQGD2020014）
辽宁省教育厅科学研究经费项目(面上项目)(LJKZ0153) （面上项目）
