农村生活污水中磷去除与资源化研究进展

Research Progress of Phosphorus Removal and Resource Utilization of the Rural Domestic Sewage

农村生活污水中含有大量的磷,经过处理回收可以转变为磷资源,又可以保护水环境。对除磷技术和回收磷作了阐述。所涉及的除磷方法中,有化学沉淀法、生物法、人工湿地法及吸附法,分析并比较每种方法的优势与不足。重点介绍了离子交换树脂和鸟粪石沉淀两种磷回收技术。其中,鸟粪石沉淀技术被认为是最有前景的磷回收途径之一,而我国在这方面的研究还处于起始阶段,需要进一步开发研究。

There is large quantity of phosphorus in the rural domestic sewage, which can be transformed into resource by recovery and be helpful to water environment protection. Both phosphorus removal and recovery techniques are presented in this paper. Methods of phosphorus removal include chemical precipitation, biological method, constructed wetland method and adsorption method;the predominance and the deficiency of each method are analyzed. Ion exchange resin method and struvite precipitation technique were introduced in detail. Struvite deposition technique is re-garded as one of the most promising means of the phosphorus recovery. While, in China, the study of this area is still at the beginning stage and further research needs to be done.