Yangtze River water treatment by spiral UF membrane with Coagulation pretreatment
To further determine the effects of operational condition on water quality and to prepare a integrated unit for waterworks on a small or medium-sized in future,an experiment using Yangtze River source water(site in Zhenjiang) as raw water was carry out to run continuously for six months by applying the in-line microflocculation/sand filtration/ spiral UF membrane process.The results show that the coagulant dosage of 3～5 mg/L(as Fe),the sand filtration at a speed of 19.5m/h and the filtration flux at 1m3/m2·d can efficient in discharging the most suspensions,and a part of organics from water can de removed.The turbidity in sand-filtration treated water value of 3～10 NTU may cause little change in trans-membrane pressure difference and increase operating efficiency,while turbidity value is less than 2 NTU ,much change is observed in the trans-membrane pressure difference.Although the wash pressure and membrane feed water quality have effect on the trans-membrane pressure difference,the wash pressure is not an important influencing the trans-membrane pressure difference.
Spiral UF membrane Drinking water treatment Yangtze River source water
CHEN Yan ZHANG Guo-zhen XIAO Zi-wen
Engineering Research Center for Cold and Arid Regions Water Resource Comprehensive Utilization,Minis School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China
国际会议
哈尔滨
英文
1524-1528
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）