摘要
氨氮浓度为2570.45mg·l-1的垃圾渗滤液经磷酸铵镁沉淀法处理后的处理出水中TN约为79.35mg·l-1,TP约为10.35mg·l-1,电导率约为78000μS·cm-1.研究用SBR法进一步处理处理出水的可行性.用常规的活性污泥,探讨了污水的含盐量和系统运行周期对TN,TP和COD去除率的影响.结果表明,当垃圾渗滤液处理出水和生活污水以1∶4混合后,TN约为48.0mg·l-1,TP约为6.0mg·l-1,COD约为1150.0mg·l-1,电导率略为15000μS·cm-1.运行的适宜周期为12h(其中厌氧2.0h,好氧5.0h,缺氧3.5h,后耗氧0.5h,沉淀排水和闲置1.0h).在此条件下,出水TN小于15mg.l-1,TP小于1.0mg·l-1,COD约为110mg·l-1.TN,TP和COD去除率分别约为77%,87%和90%.
The landfill leachate that NH3-N is 2570.45mg·l^-1 is disposed by magnesium ammonium phosphate （MAP） process. TP is 10. 35mg·l^-1, TN is 79.35mg·l^-1 conductivity is 78000μS · cm-1 in the treated water. The feasibility of the treatment of treated water by SBR process are discussed. Salt quantity and operating period affecting the result of removal of TN, TP, COD are discussed. The treated water of landfill leaehate and domestic sewage are mixed by 1：4. The conductivity is about 15000μS·cm-1, the concentration of COD is about 1150. 0mg·l^-1 , the concentration of TN is about 48mg·l^-1 , the concentration of TP is about 6. 0mg·l^-1 in the mix sewage. Operating period is 12h （ anaerobic time is 2. Oh, aerobic time is 5. Oh, anoxic time is 3.5h, next aerobic time is 0. 5h, drain and leave unused time is 1. 0h） . The removal ratio of TN, TP, COD is about 77%, 87%, 90%. The concentration of TN is less than 15mg·l^-1, the concentration of TP is less than 1.0mg·l^-1 , the concentration of COD is about 110mg·l^-1 in influent.
出处
《环境化学》
CAS
CSCD
北大核心
2008年第5期639-643,共5页
Environmental Chemistry
基金
国家自然科学基金资助项目(50378095)
关键词
SBR
垃圾渗滤液
磷酸铵镁
脱氮除磷.
SBR, landfill leachate , magnesium ammonium phosphate, nitrogen and phosphorus removal.
