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Research on Removal of Residual Chlorine and Heavy Metal Ions in Drinking Water by KDF Media

WANG Li-ping1,WANG Ya-qi1,DING Fu-sheng1,GUO Ying-qing1,2,GAO Nai-yun2(1.School of Environmental and Safety Engineering,Jiangsu Polytechnic University,Changzhou 213164,China;2.State Key Laboratory of Pollution Control and Resources Reuse,Tongji University,Shanghai 200092,China)  
KDF55,which is a kind of copper-zinc alloy,was used in this study to remove residual chlorine,Pb2+,Cd2+ in advanced tap water treatment.The results show that the removal efficiency of residual chlorine and heavy metal ions by KDF55 filter is favorable.When the filter media KDF55′s filling diameter and height are both 100mm,and the filtration rate was 45m/h,the removal rates of residual chlorine,Pb2+,Cd2+ by this filter were 89.5%,77.9% and 70.1% respectively.The removal rates of residual chlorine,Pb2+,Cd2+ by KDF55 filter was stable,when the filtering equipment was running continuously for 10 days.The tap water quality can be improved rapidly by KDF55 filter,as the consequence,the safety of drinking water can be ensured.
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