【摘要】 废水中重金属离子的难降解性、易富集性对环境及生态系统均有危害.目前处理废水中重金属离子的常规方法有化学沉淀、电化学、吸附、离子交换、膜分离等.文章介绍了近些年常用的处理废水中重金属离子的方法,除常用方法外,还介绍了水合物法与冷冻法脱除废水中的重金属离子.单一方法中,无论是常规方法中应用最广泛的吸附法,还是其它方法中如水合物法都存在各自的缺点.文章在指出单一方法的基础上,提出了通过组合或耦合的方法提高废水中重金属离子脱除效率的思路.此外,还指出目前大多方法针对废水中重金属离子脱除研究的另一大问题,即单纯研究了如何提高重金属脱除效率,并未指出对脱除后富集的重金属离子处理问题.富集后的重金属的处理也是彻底解决废水中重金属污染的一个重要研究方向.更多还原

【Abstract】 Heavy metal ions in waste water are difficult to be degraded but easy to be accumulated.Heavy metal ions can do harm to both living things and environments. Chemical precipitation, electrolysis, adsorption, ion exchange, and membrane separation were common methods to remove heavy metal ion in recent years. Except for introducing the above methods, hydrate-based method and freezing method to remove heavy metal ion have also been introduced. Both single common methods and single new proposed method exists disadvantages.The hybrid method to remove the heavy metal ions in waste water was proposed. In addition, most method to remove heavy metal ion in waste water only considered the accumulated of heavy metal or heavy metal ion, while not considered after treatment of accumulated heavy metal or heavy metal ion. In this work, after treatment of accumulated heavy metal or heavy metal ion are proposed to be treated for completely solving heavy metal problems.更多还原