摘要：

采用两级UASB反应器处理模拟精对苯二甲酸（PTA）废水，考察了反应器性能和微生物群落特征。结果表明，两级UASB反应器对高浓度PTA废水处理性能优异，COD去除率和单位COD的甲烷产率可分别达到92.34%和52.38 mL/g，对PTA废水中特征污染物苯甲酸、对苯二甲酸、对甲基苯甲酸的降解率分别高达100%、97.99%、93.73%；互营菌属（Syntrophus）和杆状脱硫菌属（Desulforhabdus）为两级UASB反应器共同的特征优势菌属；一级UASB反应器内酚降解菌（Diaphorobacter）和水解酸化菌（Raineyella）丰度更高，对污染物降解性能提升效果显著，为二级UASB反应器的稳定运行提供保障。

关键词: PTA废水, UASB, 高通量测序, 微生物群落

Abstract:

Synthetic purified terephthalic acid(PTA) wastewater was treated by the two-stage upflow anaerobic sludge blanket(UASB) reactors, and the performances and microbial communities of which were investigated. The results showed the two-stage UASB reactors had excellent performances in treating high concentration PTA wastewater, the COD removal rate and methane yield reached up to 92.34% and 52.38 mL/g respectively, and the degradation rates of characteristic contaminants in PTA wastewater, such as benzoic acid, terephthalic acid and p-toluic acid, were up to 100%, 97.99% and 93.73%, respectively. Syntrophus and Desulforhabdus were both dominant in two reactors. Stage I UASB reactor had highly abundant of Diaphorobacter and Raineyella, which improved the degradation of characteristic contaminants, and supported stage Ⅱ UASB reactor.

Key words: PTA wastewater, UASB, high-throughput sequencing, microbial communities

中图分类号: 

• X703