Ottaviani M, Santarsiero A, De Fulvio S
Ann Ist Super Sanita. 1989;25(3):525-30.
To evaluate the fertilizing and polluting potential of sewage sludge and to establish whether the latter limits the former or not, sludge must be characterized, application rates chosen, and sludge effects monitored. This work emphasizes that chemical analysis aimed at total metal quantification cannot by itself ensure reliable answers about the agricultural value of sludge. The EEC directives about heavy metals in sewage sludge provide the total content limitation of each element without taking into consideration the respective fractions of metals present in their free state constituting the chemical state most directly related to sanitary risk. To evaluate the role of the Environmental Impact Assessment (EIA) in a such disposal system, a scheme is proposed.
为评估污水污泥的施肥和污染潜力，并确定后者是否会限制前者，必须对污泥进行特性分析、选择施用量并监测污泥的影响。这项工作强调，旨在对金属总量进行量化的化学分析本身并不能确保就污泥的农业价值给出可靠答案。欧盟关于污水污泥中重金属的指令规定了每种元素的总含量限制，但没有考虑以游离态存在的金属各自的组分，而游离态构成了与卫生风险最直接相关的化学形态。为评估环境影响评估（EIA）在这样一种处置系统中的作用，提出了一个方案。
