作　　者： ; ; ; ;

机构地区： 南京林业大学化学工程学院环境工程系

出　　处： 《环境科学与技术》 2010年第1期80-84,共5页

摘　　要： 基于我国磷资源和城市污泥的现状,针对城市污泥中的营养元素,分析了城市污泥中磷回收的必要性;探讨了城市污泥中磷由固相释放至液相的微生物消化法、热处理法和药剂溶出法等;综述了回收液相中磷的磷酸铵镁、磷酸镁钾、磷酸钠钾镁结晶法和磷酸钙盐沉淀法的原理和研究现状;展望了城市污泥中磷释放与回收技术的研究、开发与应用前景。 Based on the situation of phosphorus resource in China, the necessities of phosphorus recovery from municipal sludge were analyzed focusing on the nutrients in municipal sludge. The approaches to release phosphorus from municipal sludge into liquid phase were discussed including microbial digestion, thermal treatment and dosing dissolution. The principles and status for recovering phosphorus from liquid phase, which was made as magnesium ammonium phosphate, potassium magnesium phosphate or magnesium potassium sodium phosphate by crystallization and calcium phosphated by precipitation were reviewed. The prospects for technical research, development and application in phosphorus release and recovery from municipal sludge were discussed.

关 键 词： 城市污泥 磷资源 磷释放 磷回收

领　　域： [环境科学与工程]