氨氮负荷的变化对部分硝化的影响及部分亚硝化的快速启动  

Effect of change in ammonia nitrogen loading rate on partial nitrification and rapid construction of partial nitrification

作　　者：苑宏英 赵鑫[1,2] 王宏斌 钱允致 马华继 王靖霖 赖姜伶[1,2] YUAN Hongying;ZHAO Xin;WANG Hongbin;QIAN Yunzhi;MA Huaji;WANG Jinglin;LAI Jiangling(College of Environmental and Municipal Engineering,Tianjin Chengjian University,Tianjin 300384;China 2.Tianjin Key Laboratory of Water Quality Science and Technology,Tianjin 300384;China 3.Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess,Tianjin 300384;China 4.Department of Environmental Innovation,Department of Environmental Sciences,Tohoku University,Sendai,980-8579,Japan)

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]天津市水质科学与技术重点实验室,天津300384 [3]基础设施防护和环境绿色生物科技国际联合研究中心,天津300384 [4]日本东北大学环境科学学院先端环境创城系,日本仙台980-8579

出　　处：《环境工程学报》2021年第8期2748-2758,共11页Chinese Journal of Environmental Engineering

基　　金：政府间国际科技创新合作重点专项(2019YFE0122400);国家自然科学基金资助项目(51308374);天津城建大学科技成果转化奖励专项资金项目(KJZHZ-CA-1754)。

摘　　要：部分硝化的稳定运行在一体式部分硝化-厌氧氨氧化工艺(PN/A)中至关重要。探索了在内循环接触氧化型膜生物反应器(ICCOMBR)中改变进水氨氮负荷(ALR)后,反应器中部分硝化过程受到的影响及恢复过程。结果表明:在HRT为24 h,DO为2.0~2.5 mg·L^(-1)时,系统进水ALR降为0.10 kg·(m^(3)·d)^(-1)(氨氮为100 mg·L^(-1)),部分硝化过程迅速破坏;当系统进水ALR升至0.40 kg·(m^(3)·d)^(-1)(氨氮为400 mg·L^(-1)),部分硝化过程在3 d内迅速恢复;部分硝化恢复稳定后,再提高ALR至0.60 kg·(m^(3)·d)^(-1)(氨氮为400 mg·L^(-1)),并通过调整HRT和DO,最终在HRT为16 h、DO为0.5~1.0 mg·L^(-1)时成功实现部分硝化;通过改变曝气量(AR),在AR为0.9 L·min^(-1)时,控制DO为(0.76±0.11)mg·L^(-1),系统pH为9.7~8.2,可成功启动部分亚硝化。The stable operation of partial nitrification is crucial in the integrated partial nitrification-anaerobic ammonium oxidation process(PN/A). Experiments are conducted to explore the influence and recovery process of partial nitrification process in an internal circulation contact oxidation membrane bioreactor(ICCOMBR)after changing the inlet ammonia nitrogen loading rate(ALR).The study found that the ALR of the system inlet was reduced to 0.10 kg·(m^(3)·d)^(-1)(ammonia concentration was 100 mg·L^(-1), HRT 24 h) and part of the nitrification process was destroyed rapidly when HRT was 24 h and DO was between 2.0 mg·L^(-1) to 2.5 mg·L^(-1).When the ALR at the system inlet rose to 0.40 kg·(m^(3)·d)^(-1)(ammonia nitrogen concentration was 400 mg·L^(-1),HRT was 24 h), partial nitrification process was rapidly resumed within 3 days. After partial nitrification was restored to stability, the ALR was increased to 0.60 kg·(m^(3)·d)^(-1)(ammonia concentration was 400 mg·L^(-1), HRT was 16 h). Meanwhile, HRT and DO were adjusted to achieve partial nitrification when HRT was 16 h and DO was between 0.5 mg·L^(-1) to 1.0 mg·L^(-1). Finally, partial nitrification was successfully started by changing the aeration(AR) to 0.9 L·min^(-1), controlling DO at(0.76±0.11) mg·L^(-1) and pH at 9.7~8.2.

关 键 词：厌氧氨氧化 接触氧化 部分硝化 氨氮负荷 溶解氧 碱度 

分 类 号：X703.1[环境科学与工程—环境工程]