内电解-SMBR组合工艺处理蒽醌活性染料废水  

Combined internal electrolysis/SMBR process for treatment of reactive anthraquinone dye wastewater.

作　　者：秦磊[1] 王玮[1] 张国亮[1] 孟琴[2] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310014 [2]浙江大学材料与化工学院,浙江杭州310027

出　　处：《中国环境科学》2011年第1期25-31,共7页China Environmental Science

基　　金：国家自然科学基金资助项目(20776133;20976163);浙江省重大科技攻关(2008C13014-2);浙江省自然科学基金(Y4090324)

摘　　要：采用自制的PVDF中空纤维膜组件构建浸入式膜生物反应器,进行了内电解-SMBR组合工艺处理难降解蒽醌染料(活性艳蓝X-BR)废水的试验.试验分为2组,一组为内电解出水直接进入的SMBR-3,另外一组为内电解出水经调节pH值达9～10后进入的SMBR-4.结果表明,组合工艺中2组SMBR对CODCr、色度和NH4+-N的去除率均很高,且相差不大;但两反应器对TN的去除效果却有明显差异,由于良好生物铁絮体的存在,SMBR-3对TN的去除可高达92.8%,而SMBR-4对TN的去除只有67.5%.与pH值调节后进水相比,内电解直接进水导致活性污泥絮体粒径增大34μm,EPS总量明显增加,且微生物表面结构中有丝状菌出现,菌种也变得相对复杂.对SMBR膜材料进一步检测发现,内电解直接进水所形成的生物铁絮体还可有效减轻膜污染,使膜通量衰减变慢.Wastewater containing reactive brilliant blue X-BR anthraquinone dye was treated by internal electrolysis coupled with submerged membrane bioreactor（SMBR）,in which the self-made PVDF hollow fiber membrane modules were applied.During the experiments performance of SMBR-3 with internal electrolysis water directly entering was compared with SMBR-4 in which water entered after regulating pH to 9～10.The rates of both two SMBR on CODCr and NH4＋-N removal were high,but the efficiency on TN removal was very different,in which SMBR-3 had a high rate of 92.9% compared to just 67.5% for SMBR-4.The mean particle diameter of activated sludge in SMBR-3 was 34μm bigger than SMBR-4,and the change of EPS quantity was in the same trend.Some extra filamentous bacteria in microorganism surface texture were observed in solution which predicted the relative intricacy of cultures.The bio-ferric sludge forming in SMBR-3 was found to be useful to alleviate membrane fouling and made the flux decline become slower.

关 键 词：内电解 SMBR 活性艳蓝X-BR 活性污泥 膜污染 

分 类 号：X703.1[环境科学与工程—环境工程]