【摘要】 有效降低城市污水处理厂污泥中重金属总量是污泥大量农用的关键。现阶段,国内外对于污泥中重金属的去除主要有化学试剂浸提、生物淋滤、电动修复及超临界流体萃取等方法。为此,从原理、研究现状及应用等方面对这些技术方法的研究进展进行综述,并比较了其对污泥中重金属的去除效率及优缺点,从而为污泥的无害化、资源化提供一定的理论依据。更多还原

【Abstract】 Removing the total amount of heavy metals efficiently from sludge was the key of its land application. In this paper, a review of chemical extraction, bioleaching, electro reclamation, and supercritical fluid extraction (SFE) in removing heavy metals from sewage sludge is presented in aspect of principle, research actuality and application. Moreover, the efficiencies, advantages and disadvantages of these methods are compared in order to offer theories to innocent and utilization of the sewage sludge.更多还原