利用吸附法处理废水中磷酸盐的研究进展

水体富营养化是世界各国面临的重大环境污染问题之一,磷是水体富营养化最关键的因素之一。因此,高效除磷可以有效控制水体富营养化。简述了吸附法除磷的优势,列举黏土矿物类吸附材料、金属氧化物类及金属矿物类吸附材料、生物质类吸附材料、活性炭等对磷酸盐的吸附效果与机理,并详细分析黏土矿物类吸附材料中的蒙脱石、蛭石、白云石、凹凸棒石等与金属氧化物类及金属矿物类吸附材料中的金属氧化物、水滑石、铁矿石、矿渣的实际吸附效果。最后,指出吸附剂吸附除磷的一些缺陷和有待改进的地方,归纳总结出改性吸附剂将继续是未来的研究热点。

Advances in the Removal of Phosphate from Wastewater by Adsorption Method

Eutrophication is a major environmental pollution facing all countries in the world.Efficient removal of phosphorus could control water eutrophication as phosphorus is a most critical factor of eutrophication.In this paper,the advantage of phosphorus removal by adsorption is reviewed.The efficiency and mechanism of clay mineral materials,metal oxides and metal mineral materials,biomass materials and active carbon in adsorbing phosphate are summarized;and the actual adsorption efficiencies of montmorillonite,vermiculite,dolomite,and attapulgite in clay mineral materials,as well as metal oxides,hydrotalcite,iron ore,and slag in metal oxides and metal minerals are analyzed in details.In addition,some defects which need improvement in the adsorption of phosphorus are pointed out,and the modification of adsorbent is regarded as the research direction in the future.