摘要
在进水总无机氮负荷率约为13 kg/(m3.d)的条件下,通过改变无机配水中亚硝态氮与氨氮浓度的比例来考察其对厌氧氨氧化性能的影响。试验共分为5个阶段,各阶段的进水NO 2--N/NH 4+-N均值分别为0.87、1.03、1.16、1.27、1.48。在前4个阶段对NO 2--N的平均去除率变化不大,均在95%以上,在阶段五则降至82.28%;对NH4+-N的去除率从阶段一的74.94%逐步上升至阶段五的97.85%;在阶段四时厌氧氨氧化效果最好,对NH4+-N与NO2--N的平均去除率分别达到97.59%、95.25%。试验过程中跑泥和温度降低等现象均会使处理效果降低。对反应器各部位取样的分析表明,在5个不同阶段,至反应器中部对基质的去除率就已达90%以上。
Under total inorganic nitrogen load of 13 kg/（ m^3· d） in the influent, the impact of NO2^- - N/NH4^＋- N ratio in the synthetic inorganic wastewater on ANAMMOX performance was investigated. Testing was divided into five stages with influent NO2^- - N/NH4^＋- N ratios of 0, 87, 1.03, 1, 16, 1.27 and 1.48. The average NO2^- - N removal rates changed slightly, exceeding 95% in the first four stages, but dropping to 82.28% in stage 5. The NH4^＋-N removal rate increased from 74.94% in stage 1 to 97.85% in stage 5. The best ANAMMOX performance was found in stage 4, where the average re- moval rates of NH4＋ - N and NO2^- - N reached 97.59% and 95, 25%, respectively. Significant decline in the effluent quality was found when sludge loss and lower temperatures occurred. The analysis of samples from different positions of the reactor showed that up to 90% of substrate removal rates were achieved at the middle height of UASB reactor during all five stages.
出处
《中国给水排水》
CAS
CSCD
北大核心
2012年第7期43-47,共5页
China Water & Wastewater
基金
国家科技支撑计划项目(2008BAE64B05)
广东省粤港招标项目(2007A032500005)
亚热带建筑科学国家重点实验室项目(2010ZB04
2011ZB08)
