中南大学学报（自然科学版）2013，Vol.44Issue(7)：3066-3071,6.
城市污水部分亚硝化的实现与稳定运行
Achievement and stable operation of partial nitritation for municipal wastewater
摘要
Abstract
The effluent of an Anaerobic/Oxic(A/O) process removing phosphorous from municipal wastewater was used as influent to a partial nitritation process of pilot scale plug flow reactor (volume of 1.14 m3) with the conditions of room temperature (16.4-25.5 ℃) and limited oxygen (DO concentration of 0-0.60 mg/L).The experimental result indicates that relatively low DO concentration (＜ 0.60 mg/L),operating mode of alternating aerobic and anoxic as well as the relatively constant sludge removal rate of ammonia are the key factors to achieve partial nitritation.By adjusting the aeration of the four grids in the reactor 4-8,3-4,0,3-5 L/min,DO concentrations controlling in 0.40-0.60,0.25-0.45,0.05-0.10,0.40-0.60 mg/L,forming aerobic,aerobic,anoxic,aerobic environment along the way,hydraulic retention time (HRT)for 7-9 h,the sludge circulation ratio is between 40％-60％.So ammonia oxidation rate is around 55％,the effluent of m(NO2--N)/m(NH4+-N) averaged 1.11,the effect of partial nitritation is stable for the nitrite accumulation rate is over 95％; which meet the requirement of the appropriate influent for the subsequent ANAMMOX biofilter.During the whole operating period,the settleability of sludge is good with volume Index (SVI) being 60-100 mL/g,and sludge bulking does not appear.关键词
城市污水/部分亚硝化/交替好氧缺氧/推流式反应器Key words
municipal wastewater/ partial nitritation/ alternating aerobic/anoxic/ plug flow reactor分类
资源环境引用本文复制引用
张昭,李冬,邱文新,周利军,张功良,张杰..城市污水部分亚硝化的实现与稳定运行[J].中南大学学报（自然科学版）,2013,44(7):3066-3071,6.基金项目
国家科技重大专项资助项目(2012ZX07202-005) （2012ZX07202-005）
北京市自然科学基金资助项目(8092006) （8092006）
城市水资源与水环境国家重点实验室开放基金资助项目(QAK201005) （QAK201005）
教育部新世纪优秀人才支持计划项目(NCET-10-0008) （NCET-10-0008）
北京工业大学第九届研究生科技基金资助项目(ykj-2011-4764,ykj-2011-4765,ykj-2011-4766) （ykj-2011-4764,ykj-2011-4765,ykj-2011-4766）
