The environmental pollutionofheavymetal ions(HMI) has already become serious problems that influence the survival environment of human being and other creatures.
重金属离子对环境的污染，尤其对水质的污染早已成为影响人类以及其它生物生存环境的重大问题。
2
Soil utilization of sewage sludge is an important international method of treating sewage sludge, and how to prevent the pollutionofheavymetal is always the most important problem.
污泥土地利用是当今国际上非常重视的污泥处置方式，如何防止重金属的污染一直是污泥农用中最重要的问题。
3
Heavymetalpollution, including lead, zinc, and cooper may be caused by corrosion of the very pipes that carry water from its source to the consumer.