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Chemcial Industry and Engineering 2010, Vol. 27 Issue (2) :153-156    DOI:
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Enhancing Clarification Efficiency in Seawater Purification Pretreatment Process
WANG Jing,WANG Shu-xun,SUN Hong-liang,ZHAO Jin,JIANG Tian-xiang,ZHANG Yu-shan(The Institute of Seawater Desalination and Multipurpose Utilization,State Oceanic Administration,Tianjin 300192,China)
(The Institute of Seawater Desalination and Multipurpose Utilization,State Oceanic Administration,Tianjin 300192,China

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Abstract Based on the contact flocculation theory,an enhancing clarification technology was proposed by integrating mechanical agitation,inclined tube settler and sludge circulation.Scale tests were carried out when the flow rate at the inlet was 300 L/h,the effects of technological parameters such as G values of rapid and slow mixing,and sludge reflux ratio were studied.Turbidity removal efficiencies of inorganic coagulants were compared with inorganic coagulants combined with organic polymer flocculants.The results show that when G values are 600 s~(-1) in rapid mixing zone and 60 s~(-1) in slow mixing zone, sludge reflux ratio is 2%,FeCl_3 accompanied with PAMC could decrease the water turbidity to(1.2��0.5) NTU.The high efficiency of seawater pretreatment was obtained under these conditions.
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Received 2010-03-15; published 2010-03-15
Cite this article:   
WANG Jing,WANG Shu-xun,SUN Hong-liang,ZHAO Jin,JIANG Tian-xiang,ZHANG Yu-shan.Enhancing Clarification Efficiency in Seawater Purification Pretreatment Process[J]  Chemcial Industry and Engineering, 2010,V27(2): 153-156
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