Contaminations removal from static l

Contaminations removal from static lake water by compound

Abstract： Urban wastewater treatment techniques could not be applied to improve the pollutant removal efficiency,due to its characteristics of closed and quiescent conditions of the static lake water.In this study,natural zeolite and coal cinder were chosen as filler compounds of the ecological filter.Static and dynamic experiments were carried out to study the remediation efficiency.Experimental data show that removal efficiency of ammonia nitrogen(NH4+-N)reaches 85%in both static and dynamic patterns and its removal efficiency reaches 97%when the recycling period is 1 h in dynamic condition.The maximum removal efficiency of nitrite nitrogen(NO2--N)reached 98%,and the removal efficiency of total nitrogen(TN)is a maximum of 84%.The final effluent concentration of total phosphorus(TP)is 0.079 mg/L.Effluent recycling could improve the nutrient(N,P)removal efficiently.Dissolved oxygen(DO)concentration could remain high with the water cycling.The filter works efficiently on regulating pH to the standard level of healthy water. 作 者： LIU Shu-yu    WU Ming-hong    MA Fang    ZHANG Jie    GU Xiao-jing   作者单位： LIU Shu-yu(School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,P.R.China;School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,P.R.China)

WU Ming-hong,GU Xiao-jing(School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,P.R.China)

MA Fang,ZHANG Jie(School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,P.R.China) 

期 刊： 上海大学学报（英文版）    Journal： JOURNAL OF SHANGHAI UNIVERSITY(ENGLISH EDITION)  年，卷(期)： 2010, 14(2)  分类号：   Keywords： bio-remediation    compound substrate    static water   

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