微生物固定化降解含聚废水  

Degradation of poly-containing wastewater with immobilized microorganism

作　　者：孙鸿[1] 宋华[1] 刘江红[1] 张广洲[1] 芦艳[1] 

机构地区：[1]东北石油大学化学化工学院,大庆163318

出　　处：《环境化学》2013年第3期419-424,共6页Environmental Chemistry

基　　金：国家博士基金特别资助项目(200902395)资助

摘　　要：采用微生物固定化技术降解含聚废水.将混合菌固定化制得的微生物固定化颗粒加入到含聚废水处理工艺的生化池单元中,进行含聚废水处理的模拟实验.通过曝气和添加营养物质的方式对含聚废水进行可生化性调整,以提高废水的生化比,使其达到可以生化处理的水平.实验流程分为静态和动态两部分.微生物固定化静态处理含聚污水3 d后,出水的PAM含量为82.2 mg.L-1,降解率可达83.6%;微生物固定化动态处理含聚废水3 d后,出水的水质指标趋于稳定,PAM含量为104 mg.L-1,降解率为79.2%;原油含量为8.5 mg.L-1,去除率为98.8%;CODCr含量为119 mg.L-1,去除率为85.5%.出水水质指标达到国家污水综合排放的二级排放标准.利用紫外光谱分析PAM在微生物降解前后的光谱变化,结果表明经微生物降解后的PAM结构中的羟基和酰胺基已被降解.In order to further improve the polyacrylamide（PAM） biodegradation effect,the microbial immobilization technology was employed to degrade poly-containing wastewater in the paper.Immobilized granules produced by the mixed bacteria were added to the biochemical pool unit of poly-containing wastewater treatment process.Poly-containing wastewater treatment simulation experiment was conducted.Poly-containing wastewater biodegradability was adjusted by aeration and adding nutrients to improve the wastewater biochemical ratio and reach the biochemical level.The simulation experiments technological process includes static and dynamics stages.After 3 d treatment with microbial immobilization static stage,PAM content of the effluent is 82.2 mg · L-1 and the degradation rate is up to 83.6%.The effluent quality indicators tended to be stable after 3 d treatment with microbial immobilization dynamic stage.PAM content is 104 mg · L-1 and degradation rate is 79.2%;crude oil content is 8.5 mg · L-1 and removal efficiency is 98.8%;CODCr content is 119 mg · L-1 and removal efficiency is 85.5%,which attains the National Secondary Emission Standard.PAM spectral changes before and after the microbial degradation were analyzed by ultraviolet spectrum.The results show that the hydroxyl group and amide group in the structure of PAM have been biodegraded by microbial degradation.

关 键 词：生物降解 固定化 动态 模拟 含聚废水 

分 类 号：X741[环境科学与工程—环境工程]