biological N and P removal

• 脱氮除磷

biological N and P removal的用法和样例：

例句

1. Biological technology of denitrification and phosphorus removal has been focused on in wastewater treatment field in recent years.
   生物脱氮除磷技术一直是污水处理领域所关注的重点。
2. Experiments of nitrogen and phosphorus removal from rural domestic wastewater in the Taihu Lake basin were carried out by the two-stage subsurface flow constructed wetland process.
   采用二级串联潜流式人工湿地系统对太湖地区农村生活污水进行了脱氮除磷的试验研究。