用水解酸化池—膜生物反应器处理活性艳红X-3B废水

Treatment of Wastewater Containing Reactive Brilliant Red X-3B by Hydrolysis Acidification Pool-Membrane Bioreactor Process

采用水解酸化池—膜生物反应器处理含活性艳红X-3B的模拟废水,研究了水力停留时间(HRT)对水解酸化池废水处理效果的影响,考察了水解酸化池—膜生物反应器对废水的处理效果及膜生物反应器中污泥沉降性能对膜污染的影响。实验结果表明:水解酸化池HRT为16h时,废水的可生化性最好,挥发性脂肪酸质量浓度与COD比值为0.5;HRT为17h时,废水脱色率达69%,而COD的去除率受HRT影响较小;膜生物反应器主要起去除废水中COD的作用;水解酸化池—膜生物反应器处理后废水的脱色率和COD去除率分别为83%和97%;膜生物反应器中活性污泥沉降性能的变化直接影响膜污染的速率。

The simulated wastewater containing reactive brilliant red X-3B was treated in a hydrolysis acidification pool and a membrane bioreactor. The effects of HRT on hydrolysis acidification,the whole process on wastewater treatment and sludge sedimentation performance on membrane fouling speed were investigated. The experimental results show that：For the hydrolysis acidification pool, when HRT is 16 h,the biodegradability of wastewater is the best with 0.5 of ρ（ VFA）/COD and when HRT is 17 h,the chroma removal rate is 69% whereas the COD removal rate is less affected by HRT; The function of membrane bioreactor is to remove COD;After treated in the hydrolysis acidification pool and membrane bioreactor, the chroma and COD removal rate of the wastewater is 83% and 97% respsctively;The sedimentation performance of activated sludge in membrane bioreactor directly affects the speed of membrane fouling.