PAC-DMBR复合工艺的运行特性及处理效果研究

发布时间：2018-12-25 15:54

【摘要】：采用3组动态膜生物反应器(DMBR)分别投加不同量的粉末活性炭(PAC)同时运行平行实验的方法,考察投加PAC对长期运行的PAC-DMBR复合工艺处理生活污水的效果及对污泥混合液特性的影响。结果表明,投加PAC后强化了PAC-DMBR对污染物的处理效果,COD、氨氮、TP、UV_(254)和色度的去除率均有提升。PAC投加量为3g/L时运行效果最好,稳定通量增加且运行周期延长,浊度在30 min内即降至1 NTU以内,且出水水质更好。投加PAC后改善了污泥混合液特性,促进了动态膜的形成过程及结构改变,主要表现为投加PAC后污泥粒径均有增大,污泥混合液沉降性能更好,EPS含量降低且比好氧速率有轻微提升。
[Abstract]:Three groups of dynamic membrane bioreactor (DMBR) with different amount of powdered activated carbon (PAC) were used to run parallel experiments at the same time. The effects of adding PAC on the treatment of domestic sewage and the characteristics of sludge mixture were investigated. The results showed that the treatment effect of PAC-DMBR on pollutants was enhanced by adding PAC, and the removal efficiency of COD, ammonia nitrogen, TP,UV_ (254) and chroma were all improved. The effect of PAC was the best when the dosage of PAC was 3g/L. The stable flux is increased and the operation period is prolonged, the turbidity is reduced to less than 1 NTU within 30 min, and the effluent quality is better. After adding PAC, the characteristics of sludge mixture were improved, and the formation process and structure change of dynamic membrane were promoted. The results showed that the particle size of sludge increased after adding PAC, and the settling performance of sludge mixture was better. The content of EPS decreased and the aerobic rate increased slightly.
【作者单位】：西安建筑科技大学环境与市政工程学院西北水资源与环境生态教育部重点实验室国家城市非传统水资源开发利用国际科技合作基地;
【基金】：水体污染控制与治理科技重大专项(2014ZX07315002) 国家自然科学基金项目(51508450) 中国博士后科学基金资助项目(2015M582760XB) 陕西省污水处理与资源化科技创新团队(2013KCT-13)
【分类号】：X799.3

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