由于镉类重金属对人类的极大危害性，废水标准中关于重金属浓度的排放是非常严格的。
Because of their high toxicity for human health, heavy mental concentrations in wastewater are restricted by strict standards.
处理后废水的LAS、COD浓度可达到国家排放标准。
After treatment LAS, COD concentration of effluent could meet the national discharged standards.
对循环流化床锅炉的烟尘初始排放浓度进行了探讨，对GB13271标准的数值修改提出了建议。
This paper probes into the soot initial emission consistency of circulating fluidized bed boiler, and advances some Suggestions on the modification of the values of GB13271 standard.
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