Research on Performance Effected by HRT of PAC-MF Integrated Process
The hydraulic residence time (HRT) is a key parameter affecting the water treatment process,concerning water quality guarantee,short HRT will shrink capacity of structure,in order to reduce capital construction fee and operation cost.Filtration experiments using a bench-scale immersed membrane separation system combined with a high dose of PAC (powdered activated carbon) were conducted in order to investigate the effect for organic matters,pesticides and ammonia-nitrogen,and choose the optimal hydraulic retention time.The experiments were carried out under such operation conditions as a filtration rate of 0.5m/d,water temperature of 20℃.Synthetic water was used as the source water;the average influent concentrations of TOC (total organic carbon),and NH3-N (ammonia nitrogen) were 7.8mg/l,6.8mg/l,respectively,201μg/L for THMFP and 201μg/L for Nitrobenzene.The results illustrated that,when HRT reduced from 3h to lh,the removal rate of TOC,UV254 decreased a little,so did ammonia-nitrogen.But it had little effect on THMFP and nitrobenzene.When HRT was 1 hour,the average removal rate of TOC was 75％,92％ for ammonia-nitrogen,97.5％ for nitrobenzene and 75％ for THMFP,which was all less than that of GB5749-2006 and thats the optimal hydraulic retention time..
Powdered activated carbon Microfiltration Optimal hydraulic retention time
Cong Ma Shuili Yu Wei Li Linyan Zhang
Department of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin.China
国际会议
哈尔滨
英文
1115-1118
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）