污水中磷的回收和利用途径

Recovery and reuse of phosphorus in wastewater

综述了近年来污水中磷回收的主要技术方法,重点针对磷酸铵镁结晶法,对磷酸铵镁的形成、用途及该方法的可行性做了详细的介绍与评述。同时,阐述了利用磷酸盐溶解微生物,实现磷产品肥效的回收。并对今后磷回收、回用工作的开展,提出了建议。

This paper presents a review of methods for recovering phosphorus from wastewaters. Valuable and easily separable magnesium ammonium phosphate （MAP） is highlighted as the product of an ideal phosphate removal process. The fundamentals of MAP formation and the feasibility of producing MAP from wastewaters are discussed in detail. The presence of microorganisms capable of solubilizing phosphate makes the recovered phosphorus product useful as a fertilizer. The paper also describes three areas requiring additional research to obtain essential information for cost effective recovery and reuse of phosphorus in wastewaters.