GAC/DMBR复合工艺的优化及污水处理效能  

Optimization of Granular Activated Carbon and Dynamic Membrane Bioreactor Hybrid Process and Its Wastewater Treatment Efficiency

作　　者：张净钰 杨媛[1,2] 胡以松[1,2] 臧颖 王晓昌[1,2] 陈荣[1,2] ZHANG Jing-yu;YANG Yuan;HU Yi-song;ZANG Ying;WANG Xiao-chang;CHEN Rong(Shaanxi Key Laboratory of Environmental Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Key Laboratory of Northwest Water Resource,Environment and Ecology,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学陕西省环境工程重点实验室,陕西西安710055 [2]西安建筑科技大学西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《中国给水排水》2020年第11期9-14,共6页China Water & Wastewater

基　　金：陕西省自然科学基础研究计划项目(2018JQ5054);国家自然科学基金青年基金资助项目(51508450);陕西省科技创新团队项目(2019TD-025)。

摘　　要：基于动态膜生物反应器(DMBR),采用批式试验研究了尼龙网膜基材孔径(200、300、500目)和颗粒活性炭(GAC)投加量(0.5、1、2、3 g/L)对GAC/DMBR复合工艺运行效果的影响,并基于优化结果进一步通过连续运行工艺试验考察了其对污水的处理效能。批式试验结果表明,采用不同孔径的膜基材时出水浊度无明显差别,但是200目的膜基材表现出更高的稳定通量[65 L/(m^2·h)];当GAC投加量为2 g/L时,GAC/DMBR复合工艺的处理效果和过滤性能最优。连续运行工艺试验结果表明,与空白组(DMBR)相比,GAC/DMBR复合工艺的出水通量显著提升,出水浊度稳定在1 NTU左右,且对污染物的去除效果较好,溶解性胞外聚合物(SEPS)含量降低,污泥性能得到了改善。Based on the dynamic membrane bioreactor(DMBR),batch experiments were conducted to study the effect of pore size of supporting material(200 mesh,300 mesh and 500 mesh)and dosage(0.5 g/L,1 g/L,2 g/L and 3 g/L)of granular activated carbon(GAC)on operation of GAC/DMBR process,and long-term experiments were further conducted to verify the wastewater treatment efficiency based on the optimization results.The batch experiments showed that there was no significant difference in effluent turbidity when nylon mesh with different pore size was used.However,a higher stable flux of 65 L/(m^2·h)was obtained when nylon mesh with pore size of 200 mesh was used.The treatment efficiency and filtration performance were the best when GAC dosage was 2 g/L.Compared with the control experiment(DMBR),the effluent flux of GAC/DMBR increased significantly during the longterm experiments,and the effluent turbidity remained around 1 NTU.In addition,GAC/DMBR had a better treatment performance with lower soluble extracellular polymeric substances(SEPS)content and improved sludge property.

关 键 词：动态膜生物反应器 颗粒活性炭 污水 过滤性能 污泥特性 

分 类 号：TU992[建筑科学—市政工程]