从城市污水和污泥中回收磷资源的研究

The Research on Potentiality of Recovering Phosphorus Resourses from Civic Wastewater and Sludge

从磷在生态系统中的意义和磷的地质、生物循环过程入手,论述了从污水及污泥中回收磷资源的技术方法。根据我国城市人口的数量,每人每年向污水中排放的磷的数量,城市污水的处理量,污泥的利用途径,估算了从城市污水和污泥中回收磷资源的潜力。结果表明,随着我国城市人口的增加,污水处理率的提高,从城市污水和污泥中回收磷资源的潜力越来越大。

From the meaning of phosphorus in ecosystem and the geological and biological cir- culation of phosphorus, the technical way of recovering phosphorus from civic wastewater and sludge is discussed. According to the civic population in our country, the amount of phosphorus which discharge to the wastewater for each person and each year, the disposal amount of civic wastewater, and the utilizing way of sludge, the potentiality of recovering phosphorus from the civic wastewater and sludge is estimated and calculated. The result shows that the potentiality of recovering phosphorus from civic wastewater and sludge is becoming biger and biger as the increase of civic population in china and the boost of disposal rate of wastewater.