回流比对短程硝化-厌氧氨氧化组合工艺处理晚期垃圾渗滤液自养脱氮的影响  

Effect of Recycling Ratio on the Combined Process of Nitritation-ANAMMOX for the Autotrophic Nitrogen Removal of Mature Landfill Leachate

作　　者：彭永臻[1] 王众[1] 刘牡[1] 苗蕾[1] 张方斋 姜浩 王淑莹[1] PENG Yongzhen;WANG Zhong;LIU Mu;MIAO Lei;ZHANG Fangzhai;JIANG Hao;WANG Shuying(National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Key Laboratory of Beijingfor Water Quality Science and Water Environment Recovery Engineering,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城镇污水深度处理与资源化利用技术国家工程实验室,北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《北京工业大学学报》2018年第1期19-26,共8页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(21677005)

摘　　要：采用"连续流短程硝化-厌氧氨氧化组合工艺"处理低碳氮比高氨氮浓度的晚期垃圾渗滤液.主要考察了在不同外回流比(100%~600%)的条件下,A/O反应器中氨氮转化率以及亚硝酸盐积累率的变化,游离氨(free ammonia,FA)与游离亚硝酸(free nitrite acid,FNA)的平均质量浓度变化;UASB反应器的厌氧氨氧化活性及其在相同高度(10 cm)处的粒径变化情况.试验结果表明,当回流比维持在300%时,A/O反应器中的亚硝酸盐氧化细菌(nitrite oxidizing bacteria,NOB)被FA和FNA联合抑制,进而达到了较好的短程硝化效果,A/O反应器中氨氮转化率、亚硝酸盐积累率分别达到93.5%、95.6%以上,UASB厌氧氨氧化反应器污泥持留性与活性均达到较高的水平,总氮去除负荷达到1.04 kg/(m^3·d)以上.定量PCR结果表明,厌氧氨氧化菌占全菌的比例达到了试验期间的最大值3.78%.A combined continuous-flow process of A/OShortcut-UASBaNammox was applied to treat mature leachate which contained high concentration of ammonia and low COD/nitrogen rate.The conversion rate of ammonia,nitrite accumulation ratio and the variation of FA and FNA concentrations in A/O reactor,the nitrogen removal activity of ANAMMOX and the variation of granules sizes at the same height(10cm)were investigated at different recycling ratios(100%-600%).The results indicated that when the recycling ratio came to300%,with the help of associated inhibition of FA and FNA to NOB,the conversion rate of ammonia and nitrite accumulation ratio in A/O reactor were kept above93.5%and95.6%Respectively.In addition,the ANAMMOX granules were well retained in the UASB reactor and kept a high level of total0.04kg/(m3?d).Also,the results of quantitative PCR(polymerase chain reaction)indicated that the proportions ofANAMMOXin UASB reactor were3,78%which was the maximum value of the whole experiment.

关 键 词：回流比 垃圾渗滤液 厌氧氨氧化 游离氨 游离亚硝酸 

分 类 号：X703.1[环境科学与工程—环境工程]