高磷污水中磷的处理与回收

Treatment and Recovery of Phosphorus in High Phosphorus Content Sewage

磷是植物生长的必需元素;同时也是水域污染物,使水体富营养化。处理含磷量高的特殊污水时,应对水中的磷进行回收;这样不但减少除磷药剂投加量、减少化学污泥量,同时其产物——磷酸铵镁是一种高效缓释肥,具有较高的经济效益。

Phosphorus is essential element for plant growth. Phosphorus is also a kind of contaminant that can cause the eutrophication of water body. In treatment of high phosphorus content sewage, we have to consider the phosphorus recovery, which will not only reduce coagulants use level and the sludge volume, but also produce magnesium ammonium phosphate, a kind of effective slow-release fertilizer.