摘要
研究城市污水生化处理水中有机污染物特性，及开发新型深度处理技术，对于减轻环境污染和实现废水回用均具有重要理论意义和实用价值。文章对生活污水生化处理水中有机污染物特性及UV／O3法深度处理效果进行了研究，结果表明，与焦化废水生化处理水相比，城市污水中含芳香结构的有机物含量较少，另外．亲水性和小分子有机物在城市污水生化出水中占有相当大的比例。由于UV／O3过程具有氧化能力强，反应无选择性等优点，使其在城市污水生化处理水深度处理方面比普通O3氧化更具有优势，50min时COD去除率达到90％以上，达到了深度处理的目的。对于难氧化有机物，UV／O3法处理时几乎大部分都被氧化分解．残留量很少，而O3法处理时仍有较多难氧化有机物残留。
The research of organic pollutants＇ characteristics in municipal sewage secondary effluent and developing new advanced treatment technologies are very important to environment protection and wastewater reuse. The characteristics of organic pollutants and their advanced treatment by UV/O3 process were studied. There were fewer aromatic compounds found in municipal sewage effluent than in coking wastewater. Organic compounds in the secondary effluent were mostly hydrophilic and with low molecular weight. Comparing to ordinary O3 process, the UV/O3 process had high oxidative ability and nonselective merit. After 50 minutes in the UV/O3 treatment, the COD removal rate got over 90%. Refractorily oxidized organic compounds could mostly be decomposed in UV/O3 process while still being remained a lot in the O3 process.
出处
《上海环境科学》
CAS
CSCD
2005年第3期96-100,118,共6页
Shanghai Environmental Sciences
基金
上海市科委资助项目,编号:022312116
关键词
城市污水
生化处理水
紫外臭氧法
深度处理
Municipal sewage Secondary effluent UV/O3 process Advanced treatment
