HRT对A/O型序批式MBR处理印染废水的影响  

Influences of HRT on dyeing effluents treatment with A/O type sequencing batch MBR

作　　者：李靖梅 李秀芬 堵国成[2] 

机构地区：[1]江南大学环境生物技术研究室,江苏无锡214122 [2]江南大学工业生物技术教育部重点实验室,江苏无锡214122

出　　处：《印染》2009年第16期13-16,共4页China Dyeing and Finishing

基　　金：国家自然科学基金项目(50678073);江苏省太湖水专项(BS2007125)

摘　　要：采用A／O型序批式MBR（生物膜反应器）工艺处理某印染厂的模拟生产废水，考察MBR工艺中HRT（水力停留时间）对污染物去除效果、污泥性质及膜通量的影响。试验结果表明，在不同HRT时，A／O型序批式MBR工艺处理印染废水出水水质良好且稳定，出水总COD和色度的去除率均在95％以上；氨氮去除率随HRT的延长呈先升后降的趋势，且在HRT为24h时达到最大值（96．4％）；反应器内活性污泥体积指数（SVI）均在50～70mL／gMLSS范围内，沉降性能良好；膜通量随HRT的延长而提高。综合考虑，A／O型序批式MBR处理模拟印染废水的最佳HRT为24h。A/O-type sequencing batch membrane bioreactor （MBR） was used to treat dyeing effluents. Influences of HRT on pollutant removal effect, sludge properties and membrane flux were analyzed. Results showed that, under different HRT, effluents treated with A/O-type sequencing batch MBR were good and stable, and total removals of COD and chroma were more than 95%; ammonia nitrogen removal rate rose first and fell later as HRT increased, and its maximum reached 96.4% when HRT was 24 h. SVI of sludge was in the range of 50 - 70 mL/gSS and its settling ability was good. Membrane flux increased with the extension of HRT. Overall, the best HRT would be 24 h.

关 键 词：染整 废水处理 膜生物反应器 

分 类 号：X703[环境科学与工程—环境工程] X791.03