MAP法沉淀回收装置的运行条件优化研究  

Operating conditions optimization of a precipitation recovery device by magnesium ammonium phosphate process

作　　者：周荣敏[1] 雷延峰[1] 闫越[1] 王昌南[1] 

机构地区：[1]郑州大学水利与环境学院,郑州450001

出　　处：《环境工程学报》2010年第5期1047-1051,共5页Chinese Journal of Environmental Engineering

基　　金：河南省教育厅自然科学研究计划项目(2008A610009)

摘　　要：采用一种简易的MAP回收装置,研究了间歇运行条件下反应时间和曝气量对MAP法除磷效果的影响,确定出最佳反应时间为90 min,最佳曝气量为1.2 L/min,相应的除磷率可达98.26%,沉淀回收率为74.54%。当增加一个漏斗形隔板分离反应区和沉淀区并连续运行时,除磷率和沉淀回收率分别为92.11%和63.66%。当不投加镁盐和铵盐而仅调控实际污泥脱水滤液的pH值为9.8时,其连续运行的平均除磷率和MAP回收率分别可达95.16%和70%,运行性能比较稳定。A simple magnesium ammonium phosphate（MAP） precipitation recovery device was designed and the effects of reaction times and aeration amounts on the phosphorus removal rate were studied under the intermittently operating congditions.The optimal reaction time was 90 minutes,the optimal aeration amounts was 1.2 L/min,the corresponding phosphorus removal rate and the precipitation recovery rate were 98.26% and 74.54% respectively.When a infundibuliform clapboard was added to separate the reaction region and the precipitation region,and the device was operated continuously.The phosphorus removal rate and the precipitation recovery rate were 92.11% and 63.66% respectively.Under the conditions that without adding the phosphate and magnesium and only adjusting the pH value of the sludge dewatering filtrate and operating continuously,the average phosphorus removal rate and the precipitation recovery rate were 95.16% and 70% respectively,and the opertating performance was stable.

关 键 词：磷酸铵镁 除磷 污泥脱水滤液 运行条件 

分 类 号：X703.1[环境科学与工程—环境工程]