污泥中的重金属特性分析和生态风险评价

Characteristics Analysis and Environmental Assessment on Heavy Metals in the Sludge of Sewage

选取上海某城市污水厂污泥进行重金属的总量测定及形态分析,确定超标重金属的含量和存在形态.结果表明,锌、铬、镍、铜4种重金属均存在不同程度的超标.在此基础上开展重金属潜在的生态风险评价,证明上述4种重金属元素存在较高的生态风险性,在控制、处理和资源化污泥利用中应引起足够的重视.

Sludge of Shanghai municipal sewage was chosen for carrying out total amounts and form analyses of heavy metals, The result show that four metals： Zn, Cu, Cr, Ni were excessive on varied degree. Based on these, environmental assessment were carried to evaluate the contamination situation of heavy metals, which show the four metals are in high ecological risk that should be emphasized when controlling, handing with and recycling use of municipal sludge.