环丙沙星对好氧颗粒污泥同步脱氮除磷的影响  

Effect of Ciprofloxacin on Simultaneous Nitrogen and Phosphorus Removal by Aerobic Granular Sludge

作　　者：郑丽颖 温俊宝[2] ZHENG Liying;WEN Junbao(Department of Water Conservancy and Hydropower Engineering,College of Agriculture and Water Engineering,SuiHua University,SuiHua 152061,China;The Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]绥化学院农业与水利工程学院水利水电工程系,黑龙江绥化152061 [2]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083

出　　处：《水处理技术》2020年第10期55-60,共6页Technology of Water Treatment

基　　金：国家重点研发计划项目(2018YFC1200400);绥化市科技计划项目(SHKJ2016037)。

摘　　要：以合成废水为研究对象,在AGS系统中探究了CIP对同步脱氮除磷的影响并揭示作用机制。实验结果表明,低ρ(CIP)对AGS系统营养盐去除影响不明显,而当ρ(CIP)为3.0 mg/L时,AGS系统COD,TN及TP的去除效率分别为71.3±3.2%,72.3±3.6%和74.6±3.1%,显著低于空白组。CIP在AGS系统中的去除主要依赖吸附。CIP降低了AGS系统硝化,反硝化,厌氧释磷及好氧吸磷过程。当ρ(CIP)为3.0 mg/L时,细胞内聚合物聚羟基脂肪酸酯(PHA)最大净增量为0.6±0.05 mg/g,仅为空白组的54.5±1.6%。酶活性分析表明CIP降低与生物脱氮除磷过程相关关键酶的活性。微生物群落结构分析揭示当ρ(CIP)为3.0 mg/L时,生物除磷关键微生物Candidatus_Accumulibacter和Actinobacteria的相对丰度为4.5%和8.4%,生物脱氮微生物Nitrosomonas和Nitrosospira的相对丰度分别为0.21%和0.19%。Taking synthetic wastewater as the research object,the effect of CIP on simultaneous nitrogen and phosphorus removal was studied in AGS system,and the mechanism was revealed.The results showed that lowρ(CIP)had no significant effect on nutrient removal in AGS system.Whenρ(CIP)was 3.0 mg/L,the removal efficiencies of COD,TN and TP in AGS system were 71.3±3.2%,72.3±3.6%,and74.6±3.1%respectively,which were significantly lower than that of the blank group.The removal of CIP in AGS system mainly depended on adsorption.CIP reduced the processes of nitrification,denitrification,anaerobic phosphorus release and aerobic phosphorus uptake in AGS system.The maximum net increment of intracellular polymer polyhydroxyalkanoate(PHA)was 0.6±0.05 mg/g when theρ(CIP)was 3.0 mg/L,which was only 54.5±1.6%of that in the blank group.Enzyme activity analysis showed that CIP decreased the activities of key enzymes related to biological nitrogen and phosphorus removal process.The analysis of microbial community structure revealed that the relative abundances of Candidatus_Accumulibacter and Actinoacteria,the key microorganisms for biological phosphorus removal,were 4.5%and 8.4%,respectively,and those of Nitrosomonas and Nitrospira were 0.21%and 0.19%,respectively,when theρ(CIP)was 3.0 mg/L.

关 键 词：环丙沙星 好氧颗粒污泥 生物脱氮 生物除磷 胞内聚合物 

分 类 号：X703.1[环境科学与工程—环境工程]