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环境化学  2015 

微生物固定化降解含聚废水

Keywords: 生物降解,固定化,动态,模拟,含聚废水

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Abstract:

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3d后,出水的PAM含量为82.2mg·L-1,降解率可达83.6%;微生物固定化动态处理含聚废水3d后,出水的水质指标趋于稳定,PAM含量为104mg·L-1,降解率为79.2%;原油含量为8.5mg·L-1,去除率为98.8%;CODCr含量为119mg·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.

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