Nitrogen and Phosphorus are restricted severely to prevent the water eutrophication .Biological nutrient removal (BNR) is an important water pollution control technology.

 
  • 为遏制水体的富营养化,氮、磷的排放标准日趋严格,生物脱氮除磷工艺能有效地去除水体中的氮、磷。
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