UF耦合两相厌氧工艺处理茶多酚废水

化工进展

UF耦合两相厌氧工艺处理茶多酚废水

李祝，万端极，皮科武，龚文琪

湖北工业大学化学与环境工程学院；湖北省膜技术与清洁生产研究中心；武汉理工大学资源与环境工程学院

出版日期:2008-01-05 发布日期:2008-01-05

Two-phase anaerobic process coupled with ultrafiltration for treating tea polyphenols wastewater

LI Zhu，WAN Duanji，PI Kewu，GONG Wenqi

School of Chemical and Environmental Engineering，Hubei University of Technology；Membrane Technology and Cleaner Production Center of Hubei province；School of Resources and Environmental Engineering，Wuhan University of Technology

Online:2008-01-05 Published:2008-01-05

摘要/Abstract

摘要： 为提高高浓度有机废水厌氧处理的效能，采用膜孔径为50 nm的超滤膜组件在两相厌氧反应器前端对废水进行预处理，然后对废水进行两相厌氧水解。实验结果表明，当过膜压力为0.2 MPa时，COD去除率为37.3%，SS去除率可达87.8%。与未经过超滤膜预处理的水样进行对比，经过超滤膜处理后的水样在厌氧处理时COD去除率可提高5%～7%，沼气产率增加约为0.1 m3/kg(COD)。同时投加比、P含量和HRT2/ HRT1比值对COD去除率和沼气产率也存在一定的影响，当投加比15.0%、PO43－投加量为71.5 mg/L、HRT2/ HRT1比值为3～4时，两相厌氧处理茶多酚废水达到最佳效果，COD最高去除率可达83.5%，沼气产率达0.46 m3/kg(COD)。

Abstract: Ultrafiltration (UF) membrane module with membrane pore size of 50nm was used as pretreatment for a two-phase anaerobic process in order to improve the bio-treating performance of high concentration organic wastewater containing polyphenols. The results showed that the COD removal rate was 37.3% and SS removal rate was 87.8% under the operating pressure of 0.2MPa when wastewater was pretreated by the UF membrane. The effects of inlet ratio，phosphorous concentration and the ratio of HRT2/ HRT1 (hydraulic retention time) on COD removal rate and methane output were also discussed. The best results for the treatment of wastewater containing polyphenols were： COD removal rate of 83.5%，an improvement of 5%～7%，and methane output of anaerobic reactor of 0.46 m3/kg(COD)，an improvement of 0.10 m3/kg(COD)，when inlet ratio was 15.0%，phosphorous concentration was 71.5 mg/L and the ratio of HRT2/ HRT1 was 3～4.

李祝，万端极，皮科武，龚文琪. UF耦合两相厌氧工艺处理茶多酚废水 [J]. 化工进展.

LI Zhu，WAN Duanji，PI Kewu，GONG Wenqi. Two-phase anaerobic process coupled with ultrafiltration for treating tea polyphenols wastewater[J]. Chemical Industry and Engineering Progree.