MAP沉淀法与超声波技术相联合对畜禽粪便的脱氮除磷效果  

Effectiveness of MAP Method Coupled With Ultrasonic Technology in Removing Nitrogen and Phosphorus From Poultry Feces

作　　者：彭绪亚[1] 何芸[1] 何清明[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《生态与农村环境学报》2011年第6期78-82,共5页Journal of Ecology and Rural Environment

基　　金：国家"十一五"科技部重大专项(2009ZX07104-002-04)

摘　　要：研究磷酸铵镁(MAP)沉淀法与超声波技术相联合处理高浓度畜禽废水的最佳反应条件。结果表明,MAP沉淀法在pH值9.5、n(Mg2+)∶n(NH4+)∶n(PO43-)=1.2∶1∶1、反应时间10 min时脱氮除磷效果最佳,氨氮去除率为95.10%,磷酸盐去除率为97.40%。MAP沉淀与超声波辐照联合处理最佳条件下,同时增加曝气(流量为200L.h-1),6 h时氨氮去除率可提高到98%。To efficiently remove nitrogen and phosphorus from highly concentrated livestock and poultry wastewater,an MAP（magnesium-ammonium-phosphate） sedimentation method coupled with ultrasonic technology is used.Studies have been done to explore optimal conditions for use of the method through controlling and regulating pH,n（Mg2＋）∶n（NH＋4）∶n（PO43-） and duration of the reaction.Results show that the MAP sedimentation method may achieve its best effect within the first 10 min of reaction,removing 95.10% of ammonia nitrogen and 97.40% of phosphorates in wastewater,when pH is controlled at 9.5,and n（Mg2＋）∶n（NH＋4）∶n（PO43-） at 1.2∶1∶1.Moreover,when the method is coupled with 60 W ultrasonic irradiation for 6 hours and increased aeration of 200 L·h-1,its N removing efficiency can be further improved up to 98%.

关 键 词：磷酸铵镁(MAP) 畜禽粪便 脱氮除磷 超声波 

分 类 号：X703.1[环境科学与工程—环境工程]