中试一体式部分亚硝化-厌氧氨氧化反应器的启动与区域特性  

Start-Up and Regional Characteristics of a Pilot-scale Integrated PN-ANAMMOX Reactor

作　　者：周正[1,2] 王凡[1,2] 林兴[1,2] 董石语 朱强[1,2] 李祥[1,2] 黄勇[1,2] 

机构地区：[1]苏州科技大学环境科学与工程学院,苏州215009 [2]苏州科技大学环境生物技术研究所,苏州215009

出　　处：《环境科学》2018年第3期1301-1308,共8页Environmental Science

基　　金：国家重点研发计划项目(2016YFC0401103);国家自然科学基金项目(51478284;51408387);江苏省特色优势学科二期项目;江苏省水处理技术与材料协同创新中心项目

摘　　要：通过好氧区接种亚硝化悬浮填料,厌氧区接种厌氧氨氧化絮状污泥和普通厌氧污泥研究了中试规模下一体式部分亚硝化-厌氧氨氧化反应器的启动与区域特性.结果表明,历时74 d成功启动中试一体式PN-ANAMMOX反应器,整体氮去除速率由0.02 kg·(m3·d)-1上升至0.48 kg·(m3·d)-1左右,可达到快速启动的效果,接种ANAMMOX污泥的比例与活性是实现PN-ANAMMOX反应器快速启动的关键因素;对两区域氮素转化特性分析表明,好氧区中AOB一直处于优势地位,NOB受到DO和基质的双重抑制,亚硝化效果稳定,NPRa由0.22 kg·(m3·d)-1上升到0.58 kg·(m3·d)-1左右,NAPa随着厌氧区脱氮能力的提升可达95%以上;厌氧区为一体式PN-ANAMMOX反应器的关键性区域,NRRana由0.02 kg·(m3·d)-1上升至4.7 kg·(m3·d)-1左右,期间中常温(温度由32℃下降至27℃)的变化首先对厌氧区产生影响,NRRana下降至3.7kg·(m3·d)-1左右,降低约21%,而对好氧区影响不大;在长时间运行下,两区域均可实现大量ANAMMOX菌的富集,此时好氧区也具有一定的脱氮能力,厌氧区则起强化脱氮的作用.The start-up and regional characteristics of a pilot scale integrated PN-ANAMMOX reactor was studied. The results show that inoculated nitrosation suspension filler in the anaerobic zone,ANAMMOX sludge,and common anaerobic sludge in the anaerobic zone can start the reactor quickly. The PN-ANAMMOX reactor was successfully started at 74 days. The removal rate of total nitrogen increased from 0. 02 kg·（m^3·d）^-1 to 0. 48 kg·（m^3·d）^-1. The analysis of the nitrogen conversion characteristics in two regions showed that the AOB had been in a dominant position in the aerobic zone,and the NOB was inhibited by DO and the matrix,NPRa increased from 0. 22 kg·（m^3·d）^-1 to 0. 58 kg·（m^3·d）^-1,and NAPacould reach 95% with the increase in anaerobic denitrification capacity. The anaerobic zone was a critical region of the integrated PN-ANAMMOX reactor,and NRRanaincreased from 0. 02 kg·（m^3·d）^-1 to 4. 7 kg·（m^3·d）^-1. During the start-up period（temperature decreased from 32℃ to 27℃）,the changes first affected the anaerobic zone,NRRanadecreased to 3. 7 kg·（m^3·d）^-1（about 21%）,with little effect on the aerobic zone. The two regions can achieve a large ANAMMOX bacteria enrichment,as,during this time,the aerobic zone also has a certain denitrification capacity,while the anaerobic zone featured enhanced denitrification.

关 键 词：部分亚硝化 厌氧氨氧化 中试 启动 调控 

分 类 号：X703.1[环境科学与工程—环境工程]