生物脱氮 meaning in English

biological denitrification

New processes of biological phosphorus and nitrogen removal in sewage
污水生物脱氮除磷工艺的新进展
The effect of temperature on short - cut nitrification denitrification
新工艺中生物脱氮及影响因素研究
Mechanism and technology advances in biological denitrification and phosphorus removal
生物脱氮除磷机理及技术进展
Biological denitrogenation craft in coking - plant wastewater processing application
生物脱氮工艺在焦化废水处理中的应用
Specification for design of nitrogen and phosphorus removal in activated sludge system
城市污水生物脱氮除磷处理设计规程

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