The discharge of waste water containing persistent organic matters and waste water containing heavy metals shall be strictly controlled.

严格控制向海域排放含有不易降解的有机物和重金属的废水。

youdao

Studies of waste water Containing cyanogen were quite many with ferrate and sodium hypochlorite , the study is very few about waste water Containing heavy metal complex with cyanogen .

国内外应用高铁酸盐和次氯酸钠处理含氰离子废水方面的研究比较多，但对于含重金属氰配合物的废水却很少研究。

youdao

So the heavy metal waste water treatment has been the focus of attention.

所以对重金属废水的治理一直是人们关注的焦点。

youdao

They squander land, damage plant and animal species through the heavy use of fertilizers and pesticides, and waste huge amounts of water.

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