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《Water Purification Technology》 2012-03
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Application of Pulverized Fuel Ash in Treatment of Wastewater Contained with Fluorine and Phosphorus

Deng Hui,Li Cong,Ma Hongfei,Yang Xianghua(School of Environmental and Biological Engineering,Liaoning Shihua University,Fushun 113001,China)  
Pulverized fuel ash is a kind of industrial solid waste produced from thermo-electric plant,which has been widely used in waste water treatment as flocculant and adsorbent.Excessive fluorine intake for a long time causes endemic fluorosis,and phosphorus is the control factor which results in eutrophication of water bodies as majority.The paper reviewed the current studies of pulverized fuel ash in fluorine and phosphorus removal,discussed the influencing factors and modified methods,analyzed the removal mechanism additionally.Results revealed that the constituents,especially Ca/CaO content,and operation condition affected the removal of fluorine and phosphorus a lot.Change of sour,alkali,salt,microwave,load,process and new material transformation were beneficial to improve pulverized fuel ash disposal capacities for fluorine and phosphorus.Fluorine and phosphorus removal by pulverized fuel ash depended on adsorption and agglomeration effects in most cases.
【CateGory Index】: X703
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