Wastewater treatment plants concentrate large quantities of phosphorus and ammonia in their sludge-handling streams. 一般在污水处理厂的污泥中会富集大量的磷(P)和氨。
Based on this, the effect of N / P ratio on nitrogen and phosphorus removal was investigated. 在此基础上,考察了N/P值对系统脱氮除磷(P)效果的影响。
The scientists then compared how much nitrogen and phosphorus were available in the soil. 科学家然后比较土壤里有多少氮和磷(P)元素吸收了。
Choose a fertilizer that contains nitrogen, phosphorus, and potassium. 选择含有氮,磷(P)和钾的肥料。
In the subsurface flow constructed wetland, insoluble phosphorus is removed by adsorption and deposition during wet season. 雨季时潜流人工湿地内发生了不溶性磷(P)的吸附和沉积,实现了对磷(P)的去除;