Powder activated carbon (PAC) addition to improve the performance of ultra-filtration Membrane Bioreactor System
In this study, powdered activated carbon (PAC) was used to improve the operational performance of ultra-filtration (UF) membrane bioreactor (MBR) system. At first, two runs of tests were carried out to investigate the effect of MLSS and SCOD in MBR on UF membrane permeate flux. It was found that the majority of the increasing resistance was attributed to cake resistance; while in the reactor with higher COD, the fouling resistance increased at a rate higher than the cake resistance did. On this base, a model of protection layer was proposed to illustrate the phenomenon of UF membrane fouling. Following that, PAC was added into the test reactor to enhance the formation of protection layer. During the operational period of 32 days, compared with the control system, test system obtained higher removals for COD, NH4+-N, TN and TP by 7.5％, 6.8％, 5.5％ and 12.6％, respectively. And fouling rate of the UF membrane in it was also lowered.
MBR PAC Fouling resistance Permeate flux Protection layer
Chuanxin Wang Shuying Wang Yongzhen Peng Liang Zhang Yongzhen Peng
Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering Beijing U State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin,
国际会议
三峡
英文
899-902
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）