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氨氮对UASB-ALR工艺处理晚期垃圾渗滤液的抑制性研究
Study on NH4+-N Inhibition on the Treatment of Later Landfill leachate by UASB-ALR
【摘要】 采用升流式厌氧污泥层反应器(UASB)-气升式环流反应器(ALR)的组合工艺处理高氨氮垃圾渗滤液。稳定运行阶段,通过添加氯化铵,考察NH4+-N浓度对UASB-ALR工艺稳定运行的影响。结果表明,当UASB进水氨氮浓度超过2 660mg/L时,UASB的有机物去除率下降到60%。当ALR进水中NH4+-N浓度达到3140 mg/L时,ALR对COD和NH4+-N去除率分别下降到12.8%和57%。经过7 d的恢复期,UASB对COD的去除率回升到78.5%,ALR反应器的COD及NH4+-N去除率均无法恢复到抑制前的水平。
【Abstract】 Landfill leachate with high ammonia was treated by up-flow anaerobic sludge blanket reactor( UASB)-airlift loop reactor( ALR) process. The effect of NH+ 4-N concentration on the stable operation of UASBALR was studied by the addition of ammonium chloride during the stable period. The results showed that when the ammonia concentration of UASB influent exceeded 2 660 mg / L,the organics removal rate of UASB drops to 60%. When the influent NH+ 4-N concentration of ALR reached 3 140 mg / L,the COD and NH+ 4-N removal rate of ALR decreases to 12. 8% and 57% respectively. After seven days recovery,the COD removal rate of UASB rises to 78. 5%,but the COD and NH+ 4-N removal rate of ALR can not restore to the level before inhibition.
【Key words】 up-flow anaerobic sludge blanket reactor(UASB) airlift loop reactor(ALR) leachate ammonia inhibition；
- 【文献出处】 科学技术与工程 ,Science Technology and Engineering , 编辑部邮箱 ,2014年08期
- 【分类号】X703
- 【被引频次】4
- 【下载频次】75