改良型UNITANK工艺冬季运行特性及微生物群落分析  

Operation characteristics and microbial community of modified UNITANK process in winter

作　　者：顾晓丹 黄勇[1,2] 丁永伟 黄继会 王伟 张俊 陈芳芳 GU Xiaodan;HUANG Yong;DING Yongwei;HUANG Jihui;WANG Wei;ZHANG Jun;CHEN Fangfang(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology,Suzhou University of Science and Technology,Suzhou 215009,China;Suzhou Water Group Co.Ltd.,Suzhou 215001,China;Suzhou Drainage Co.Ltd.,Suzhou 215001,China)

机构地区：[1]苏州科技大学环境科学与工程学院,苏州215009 [2]苏州科技大学城市生活污水资源化利用技术国家地方联合工程实验室,苏州215009 [3]苏州市水务集团,苏州215001 [4]苏州市排水有限公司,苏州215001

出　　处：《环境工程学报》2021年第7期2480-2487,共8页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项子课题(2017ZX07205-0203);苏州科技大学科研基金项目(XKZ2018001);江苏省水处理技术与材料协同创新中心项目。

摘　　要：针对苏州某城市污水处理厂改良型UNITANK工艺冬季出水水质波动大的问题,采用模型分析了改良型UNITANK工艺的周期性运行特征,通过Illumina MiSeq高通量测序对改良型UNITANK工艺冬季活性污泥的微生物种群结构进行了分析。结果表明,冬季改良型UNITANK工艺缺氧池反硝化充分,边池的均匀曝气导致边池前端和中段硝化不充分,周期性出水氨氮、溶解性磷酸盐的质量浓度逐渐升高。微生物种群结构分析结果表明:冬季微生物多样性较高,独特的工艺运行方式会对生物多样性产生影响;Saprospiraceae、Nitrosomonas、Nitrospira作为冬季活性污泥中的优势菌属,保证了改良型UNITANK工艺内生物脱氮除磷功能的发挥。To solve the problem of large fluctuation of effluent quality from modified UNITANK process in a Suzhou municipal sewage treatment plant in winter,periodical operation characteristics of the modified UNITANK was analyzed by the model.The high-throughput sequencing of Illumina MiSeq was used to analyze the microbial community structure of activated sludge in the modified UNITANK in winter.The results showed denitrification was sufficient in the anoxic zone,uniform aeration in the edge tank led to inadequate nitrification in the front and middle of the edge tank,ammonia and soluble phosphate in the periodic effluent gradually increased.The analysis of microbial community structure indicated that the microbial diversity was higher than other seasons,which was related to the unique process operation mode.Saprospiraceae,Nitrosomonas and Nitrospira were the dominant bacteria in the activated sludge in winter,which ensured the performance on the biological removal of nitrogen and phosphorus in the modified UNITANK process.

关 键 词：改良型UNITANK工艺 冬季 模型 群落结构 运行特征 

分 类 号：X703[环境科学与工程—环境工程]