游离氨抑制协同实时控制实现晚期渗滤液短程硝化  

FA inhibition cooperate with process control achieving partial nitrification to remove nitrogen from real mature landfill leachate

作　　者：刘牡[1] 彭永臻[1] 宋燕杰[1] 吴莉娜[1] 

机构地区：[1]北京工业大学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：《土木工程学报》2010年第S2期435-439,共5页China Civil Engineering Journal

基　　金：国家自然科学基金(50778005);北京市自然科学基金重点项目(8091001)

摘　　要：采用"单级UASB+A/O+SBR组合工艺"处理高氨氮晚期垃圾渗滤液。经过110天的稳定运行,结果表明在UASB中A/O反应器出水回流液与回流污泥中的亚硝酸盐和硝酸盐利用渗滤液原液中的COD反硝化同时产甲烷,随后在A/O反应器的缺氧段进行反硝化以及氨氮的硝化。最后剩余的氨氮,亚硝酸盐和硝酸盐在SBR应用实时控制被去除。在A/O反应器中以游离氨抑制(FA)为主而SBR中采用实时控制策略使得两反应器中的亚硝酸积累率分别达到了94%和93%。用FISH进行微生物种群结构分析表明,在A/O反应器中AOB和NOB分别占到了总菌群量的3.5%和0.2%,而在SBR中,AOB和NOB分别占到4%和0.4%。进水总氮为2080mg/L,氨氮浓度为1970mg/L的条件下,总氮去除率与氨氮去除率都接近99%,最终的总氮与氨氮分别为12mg/L和6mg/L。在同一个系统中通过FA选择性抑制与实时控制实现长期稳定的短程脱氮是可行的。Mature landfill leachate with high ammonia concentration was treated by a combined system consisting of a up-flow anaerobic sludge blanket(UASB),an anoxic/aerobic(A/O)reactor and a sequencing batch reactor(SBR).Denitrification and methanogenesis were carried out simultaneously in the UASB and then the denitrification of nitrite and nitrate in the returned sludge were accomplished in the A/O reactor.The residual ammonia as well as nitrite and nitrate was removed in SBR.The partial biological nitrogen removal was achieved stably both in A/O reactor with FA control and in SBR with process control strategy with 94% and 93% nitrite accumulation,respectively,and microbial analysis data showed AOB and NOB,respectively,accounted for 3.5% and 0.2% of the total amount of bacteria in A/O reactor and accounted for 4% and 0.4% in SBR.when the total nitrogen(TN)concentration of influent leachate was about 2080 mg/L and the ammonia nitrogen concentration was about 1970 mg/L,Nitrification and nitrogen removal were usually both higher than 99% and the TN and NH+4-N of final effulent were about 12 mg/L and 6 mg/L,respectively.The key factor of achieving and stabilizing partial nitrification in combined system was the optimization of nitrifying communities in sludge owing to long-term application of FA inhibition and process control.

关 键 词：游离氨抑制 实时控制 短程硝化 垃圾渗滤液 组合工艺 

分 类 号：X703[环境科学与工程—环境工程]