半连续活性污泥法测定表面活性剂的好氧生物降解度  

Aerobic biodegradation of surfactants using semi-continuous active sludge method

作　　者：李遵峰[1] 张高勇[1] 赵郁梅[1] 谷惠先[1] 秦勇[2] 

机构地区：[1]中国日用化学工业研究院,山西太原030001 [2]江苏工业学院化工系,江苏常州213164

出　　处：《日用化学工业》2007年第2期85-87,96,共4页China Surfactant Detergent & Cosmetics

摘　　要：用半连续活性污泥(SCAS)法测定表面活性剂的生物降解度,考察了表面活性剂分子在活性污泥体系中的吸附-脱附作用所导致的假降解现象,研究了活性污泥浓度对降解性能的影响,并用SCAS法对AEO7、L-64、LAS和AES进行了初级和最终生物降解度的测定,结果表明以上4种表面活性剂的初级生物降解度均>90%、最终生物降解度均>70%,达到了欧盟洗涤剂法规的相关标准,均属易降解表面活性剂。False degradation phenomenon caused by the adsorption - deserption action of surfactant molecules in active sludge system were examined. The effects of mixed liquor suspended solid （consistency of the active sludge） on degradation performance were studied. Using semi - continuous active sludge method, the ready biodegradability and ultimate biodegradability of AEOT, L - 64 （polyether）, LAS and AES were determined. Results showed that the ready biodegradability of all of the above - mentioned 4 kinds of surfactant are higher than 90% while their ultimate biodegradability are higher than 70%. Such results meet the requirement of Regulation （EC） and these surfactants are all belong to easily biodegradable surfactants.

关 键 词：表面活性剂 半连续活性污泥法 生物降解 测定 

分 类 号：TQ423[化学工程]