投加粉末活性炭对DMBR处理污水性能的影响

发布时间：2018-05-28 18:44

本文选题：动态膜生物反应器 + 粉末活性炭　；参考：《中国给水排水》2016年19期

【摘要】：采用向动态膜生物反应器(DMBR)中投加粉末活性炭(PAC)的方式处理生活污水,考察了不同目数(200~500目)膜基材下投加1 g/L的PAC以及200目膜基材下投加不同浓度PAC(0.5~3 g/L)对DMBR性能的影响。在不同目数膜基材下,除200目外其他孔径下的膜通量均有轻微下降,但浊度均能快速降至1 NTU以内(约为25 min)。不同PAC投加量的试验结果表明,其较佳投量为1 g/L,在此投量下浊度下降迅速(30 min即降至1 NTU以下),且投加PAC系统表现出更好的去除污染物效果。分析认为,PAC与活性污泥的短时间相互作用未能显著改善污泥的性质,主要体现在PAC对污染物的强化吸附作用,而过量的PAC本身可能成为污染物质,堵塞已经形成的动态膜孔道,影响出水的通量和浊度。
[Abstract]:Domestic sewage was treated by adding powdered activated carbon (PAC) into dynamic membrane bioreactor (DMBR). The effects of adding 1 g / L PAC under different mesh number of mesh) and adding different concentration of PAC(0.5~3 g / L under 200mesh film substrate on DMBR performance were investigated. Under different mesh number of membrane substrates, the membrane flux decreased slightly except 200 mesh, but the turbidity decreased rapidly to less than 1 NTU (about 25 mins). The experimental results of different PAC dosages show that the optimum dosage is 1 g / L, under which the turbidity decreases rapidly to less than 1 NTU for 30 min, and the addition of PAC system has a better effect on the removal of pollutants. It is concluded that the short time interaction between PAC and activated sludge can not significantly improve the properties of sludge, which is mainly reflected in the enhanced adsorption of pollutants by PAC, while excessive PAC itself may become a pollutant, blocking the existing dynamic membrane channels. The flux and turbidity of effluent are affected.
【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】：国家水体污染控制与治理科技重大专项(2014ZX07315002) 国家自然科学基金资助项目(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项目(2013KCT-13)
【分类号】：X703

【相似文献】