氧化锌纳米颗粒对污水生物除磷的影响及其机理研究  

Study on the effect and mechanism of zinc oxide nanoparticles on the biological phosphorus removal from wastewater

作　　者：王立璇[1] 杨平平[2] 

机构地区：[1]河北化工医药职业技术学院化学与环境工程系,河北石家庄050026 [2]太原理工大学化学化工学院,山西太原030024

出　　处：《环境污染与防治》2017年第11期1189-1192,共4页Environmental Pollution & Control

基　　金：国家自然科学基金青年基金资助项目(No.21206103)

摘　　要：在序批式反应器中探究了不同浓度氧化锌纳米材料(ZnO NPs)对污水生物强化除磷的影响。结果表明:(1)低质量浓度(1mg/L)ZnO NPs对污水生物除磷影响不明显,而高质量浓度(32mg/L)ZnO NPs能明显降低生物除磷效率(除磷效率仅为55%左右)。(2)高浓度ZnO NPs的存在能抑制厌氧释磷和好氧吸磷。32mg/L ZnO NPs作用下聚磷菌相对丰度仅为21.6%,明显低于空白组,与除磷相关的酶活也明显低于空白组。The effect of different concentrations of ZnO nanoparticles （NPs） on biological phosphorus removal （BPR） in sequencing batch reactor was investigated. Experimental results showed that： （1） low mass concentration of ZnO NPs （1 mg/L） caused no obvious effect on BPR,however,high mass concentration of ZnO NPs （32 mg/L） significantly decreased the efficiency of BPR, and the BPR efficiency decreased to 55%. （2） High concentration of ZnO NPs inhibited the anaerobic phosphorus release and oxic phosphorus uptake. When the mass concentration of ZnO NPs was 32 mg/L,the abundance of phosphorus accumulating organisms was only 21.6 %,which was much lower than that in blank. Additionally,the key enzymes activities related to phosphorus removal in the presence of high ZnO NPs were also lower than those in blank.

关 键 词：生物除磷 氧化锌纳米材料 聚磷菌 酶活 

分 类 号：X703[环境科学与工程—环境工程]