中文摘要：

应用两级上流式厌氧污泥床（UASB）-缺氧/好氧（A/O）-序批式反应器（SBR）深度处理早期和晚期垃圾渗滤液.首先在一级UASB（UASB1）中实现反硝化,在二级UASB（UASB2）中通过产甲烷降解有机物,在A/O反应器的好氧区进行NH4＋-N的硝化,最后在SBR中去除残余NH4＋-N及通过反硝化去除NO2--N和NO3--N深度脱氮.试验结果表明：早期渗滤液ρ（COD）,ρ（TN）和ρ（NH4＋-N）分别为14.8,1.8和1.3mg/mL,最终出水ρ（TN）,ρ（NH4＋-N）,ρ（NO2--N）和ρ（NO3--N）分别为28,4,3.4和1.9mg/L,获得了大于98%的TN和NH4＋-N去除率.晚期渗滤液ρ（COD）为2.5mg/mL;ρ（TN）,ρ（NH4＋-N）分别为3.0和2.9mg/mL时,获得99%以上的TN和NH4＋-N去除率.最终出水ρ（NH4＋-N）,ρ（NO2--N）和ρ（NO3--N）都小于10mg/L,最终出水ρ（TN）为26～32mg/L.

英文摘要：

A combined process of a two-stage up-flow anaerobic sludge blanket（UASB）,an anoxic-aerobic（A/O） reactor and a sequencing batch reactor（SBR） was used to treat fresh and matured landfill leachate.The operational mode of the process was as follows： denitrification took place in the first stage UASB（UASB1）;the chemical oxygen demand（COD） was mainly removed in the second stage UASB（UASB2） by methanogenesis;the ammonium nitrogen was removed by partial nitrification in the aerobic zone of A/O reactor;the residual ammonia nitrogen was removed in SBR;and the nitrite and nitrate which was produced by the nitrification was also removed in SBR.The experiment results show that the COD,TN and NH＋4-N concentrations of fresh leachate are about 14.8,1.8 and 1.3 mg/mL,respectively;the TN,NH＋4-N,NO-2-N and NO-3-N concentrations of final effluent leachate are 28,4,3.4 and 1.9 mg/L,respectively;and the TN and NH＋4-N removal efficiency are more than 98%.Meanwhile the COD,TN and NH＋4-N concentrations of matured leachate are 2.5,3.0 and 2.9 mg/mL,respectively;the TN and NH＋4-N removal efficiency are more than 99%;the NH＋4-N,NO-2-N and NO-3-N concentrations of final effluent are less than 10 mg/L;the TN concentration of final effluent is about 26-32 mg/L.