Yan Ning, Xia Si-Qing, Zhu Jun, Zhang Yong-Ming
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Huan Jing Ke Xue. 2011 Oct;32(10):3059-66.
Photolytic circulating-bed biofilm reactor (PCBBR) and internal loop photolytic-biological reactor (ILPBR) were respectively used for degradation of phenol, 2, 4, 6-trichlorophenol (TCP) and sulfamethoxazole (SMX). Experimental results indicated that the rates of phenol, TCP and SMX removal by coupled photolysis with biodegradation (P&B) reached at 0.65, 0.11 and 0.17 mg x (L x min)(-1), which was clearly higher than that by photolysis alone (P), biodegradation alone (B), except phenol removal rate by B,which was similar to the rates by P&B. The COD removal percentages of phenol and TCP were 99.5% and 72.1%, and TOC removal percentage of SMX was 57.3, which all were higher that by P and B. The biofilms under UV irradiation were taken as samples for molecular biological analysis to get the significant results that microbial communities in biofilms took great change compared with that without UV irradiation, but they still kept bioactivity degrading organic pollutants. That is significant results for technological innovation on recalcitrant organic wastewater treatment.
光解循环床生物膜反应器（PCBBR）和内循环光解生物反应器（ILPBR）分别用于降解苯酚、2,4,6-三氯苯酚（TCP）和磺胺甲恶唑（SMX）。实验结果表明，光解与生物降解耦合（P&B）对苯酚、TCP和SMX的去除速率分别达到0.65、0.11和0.17mg·(L·min)-1，明显高于单独光解（P）和单独生物降解（B），除了单独生物降解对苯酚的去除速率与光解与生物降解耦合的速率相似。苯酚和TCP的化学需氧量去除率分别为99.5%和72.1%，SMX的总有机碳去除率为57.3%，均高于单独光解和单独生物降解。以紫外照射下的生物膜为样本进行分子生物学分析，得到重要结果：与未进行紫外照射相比，生物膜中的微生物群落发生了很大变化，但它们仍保持降解有机污染物的生物活性。这对于难降解有机废水处理的技术创新具有重要意义。
