在对废水进行脱氮除磷时，去除生物营养素是一种相对成本较低的方法。

Biological nutrient removal is a relatively low-cost means of removing nitrogen and phosphorus from wastewater.

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浮萍种群增长能力极强，主要通过生物量的增长实现对氮磷营养的吸收去除。

Duckweed population grows rapidly and removes the nutrients mainly by biomass increasing.

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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。

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

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