不同污泥龄对活性污泥系统处理各种药物的影响  

Impact of Sludge Retention Time on Pharmaceuticals Removal in Activated Sludge System

作　　者：杨程[1] 郭劲松[1] Belinda S.M.Sturm Rachael F.Lane Craig D.Adams Ray E.Carter 

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400045 [2]美国堪萨斯大学土木建筑与环境工程学院

出　　处：《中国给水排水》2012年第13期99-102,108,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07104-002;2009ZX07104-003)

摘　　要：运行4个实验室规模(3 L)的序批式活性污泥反应器(SBR),其污泥龄(SRT)分别为2、8、14、20 d。批次摇瓶试验通过设置3个工况(正常运行、加入生物抑制剂、无微生物)来讨论5种污泥(4个SBR和当地污水处理厂)对浓度为5μg/L的10种药物的处理效果,以及在一个运行周期(8 h)中吸附作用、生物降解作用和挥发损失的去除贡献。试验结果显示,对乙酰氨基酚、咖啡因基本能被去除,去除率在60%以上,立痛定、磺胺甲恶唑能被部分去除,去除率为30%～55%;降固醇酸、林肯霉素、甲氧苄啶的处理效果不好,去除率<15%。在相同污泥浓度下进行的摇瓶试验结果表明,对4种磺胺类药物的去除率为20%～60%,磺胺甲恶唑、磺胺间二甲氧嘧啶、磺胺甲基嘧啶主要依靠吸附作用去除,磺胺嘧啶则是依靠生物降解作用去除。从单因素方差分析可知,对磺胺类药物的去除效果与污泥龄有着显著的关系(p<0.02)。Four sequencing batch reactors （SBR） were operated with sludge retention time （SRT） of 2, 8, 14, and 20 d. In batch experiments, three conditions （normal operation, addition of inhibitors and no microorganisms presence） were used to investigate the impact of five kinds of sludges （WWTP and SBR with SRT = 2, 8, 14 and 20 d） on the removal often pharmaceuticals of 5 μg/L. The respective contributions of biosorption, biodegradation and volatilization loss in an operation cycle of 8 h were studied. The result showed that at least 60% of acetaminophen and caffeine were removed, 30% to 55% of carbamazepine and sulfamethoxazole were removed, and at most 15% of clofibric acid, lincomycin and trimethoprim were removed. Under the same sludge concentrations, the batch experiments showed that the removal rates of the four sulfonamides were 20% to 60% , the removal of sulfamethoxazole, sulfadim-ethoxine and sulfamerazine depended mainly on biosorptio mainly on biodegradation. One-way ANOVA statistical test was significantly affected by the SRT （p 〈0.02）.

关 键 词：活性污泥系统 磺胺类抗生素 污泥龄 药物 

分 类 号：X787[环境科学与工程—环境工程]