Balmér P
VA-strategi, Mölndal, Sweden.
Water Sci Technol. 2001;44(10):19-26.
Falling heavy metal concentrations in wastewater sludges are an indicator of the improvements in sludge quality achieved over the past thirty years. Studies of the sources of heavy metals in wastewater sludges, particularly the loads introduced by domestic and industrial wastewater and storm water, show the potential improvement that may still be made.
废水污泥中重金属浓度的下降是过去三十年来污泥质量得到改善的一个指标。对废水污泥中重金属来源的研究，特别是生活污水、工业废水和雨水引入的负荷研究，显示出仍有潜在的改善空间。
