涤纶碱减量废水中对苯二甲酸的好氧生物降解性能研究  

Study on aerobic biodegradability of terephthalic acid in polyester fabric alkali-peeling process wastewater

作　　者：杨期勇[1] 陈季华[2] 孙选举[2] 奚旦立[2] 

机构地区：[1]九江学院化学化工学院,九江332005 [2]东华大学环境科学与工程学院,上海200051

出　　处：《环境污染治理技术与设备》2006年第7期38-42,共5页Techniques and Equipment for Environmental Pollution Control

基　　金：上海市科委重点科技攻关资助项目(02DZ12096)

摘　　要：采用城市污水处理厂的活性污泥做菌源,在实验室条件下研究了对苯二甲酸(TA)和乙二醇(EG)的好氧生物降解性能,着重考察了EG对TA好氧生物降解性能的影响。试验结果表明,微生物以TA、EG作为惟一的碳源需要一定的驯化时间,EG作为惟一碳源的驯化时间比TA的驯化时间长。但微生物一旦被驯化,EG比TA具有较快的降解速度,当TA为1100 mg/L时,其平均降解速率为27.5 mg COD/g MLSS.h,而EG为1200 mg/L时,其平均降解速率达到36.7 mgCOD/gMLSS.h。在相同污泥负荷条件下,TA降解的滞后期受TA浓度影响不大,TA的好氧降解不存在明显的抑制浓度。EG不会抑制TA的初级生物降解,但会抑制TA的最终生物降解。The aerobic biodegradability of terephthalic acid （TA） and ethylene glycol （EG）, especially the effect of the added EG on the biodegradability of TA , were studied in the lab condition with mixed culture from activated sludge of WWTP. There was a lag period in the aerobic biodegradation of TA and EG as sole carbon source, and the lag period of biodegradation for EG was longer than for TA. After the lag period, the removal rate of EG was 36.7 mg COD/g MLSS · h at a concentration of 1200 mg/L, while TA was 27.5 mg COD/g MLSS · h at 1100 mg/L. The concentration of TA had a slight negative influence on the lag period of biodegradation of EG at the same sludge loading rate. Although EG did not inhibit the aerobic primary biodegradation of TA, it inhibited the aerobic ultimate biodegradation of TA.

关 键 词：好氧生物降解 对苯二甲酸 乙二醇 碱减量废水 

分 类 号：X703[环境科学与工程—环境工程]