用磷酸铵镁沉淀法对剩余污泥超声波处理上清液的磷回收研究  

Phosphorus Recovery by Magnesium Ammonium Phosphate from Sonicated Waste Activated Sludge Supernatant

作　　者：王晓霞[1] 吕树光[1] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237

出　　处：《华东理工大学学报（自然科学版）》2012年第1期53-58,共6页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(51108181)

摘　　要：在溶胞法污泥减量化处理中,细胞微生物中的碳、氮、磷等物质会溶解释放到上清液中,对上清液中的磷进行有效回收,既可保证污水处理系统的稳定运行,同时又有利于污泥资源化和缓解磷资源的匮乏。采用磷酸铵镁沉淀法(MAP法)对城市污水剩余污泥超声波处理上清液进行了磷回收研究。通过单因素实验得到的最佳反应条件为:初始pH 9.70、时间10 min、镁磷摩尔比n(Mg2+)/n(PO34--P)=1.5。在此条件下,上清液中总磷(TP)、正磷酸盐(PO34--P)的回收率可分别达到83.2%、96.3%,同时在此过程中有机物及氮也有一定程度的去除。During reduction of waste activated sludge（WAS） by sludge disintegration,many organic,nitrogen and phosphorus constituents of WAS would be dissolved and released into sludge supernatant.Effective recovering of phosphorus will benefit to stable performance of municipal biological treatment,reuse of WAS and alleviation phosphorus resources shortage.In this paper,phosphorus recovery from sonicated WAS supernatant by magnesium ammonium phosphate（MAP） sedimentation process was carried out and studied.Through the single factor experiment,the optimal reaction conditions was determined finally,which was： pH was 9.70,reaction time was 10 min,n（Mg2＋）/n（PO3-4-P） was 1.5.Under the optimal conditions,the recovery rates of TP and PO3-4-P by MAP reached 83.2%、96.3%,respectively,meanwhile,partial organics and nitrogen also were removed.

关 键 词：磷酸铵镁 剩余污泥 超声波 磷回收 

分 类 号：X7[环境科学与工程—环境工程]