厌氧氨氧化颗粒反应器的快速启动研究

Fast Start-Up of Anaerobic Ammonium Oxidation Granular Reactor

DOI：10.3969/j.issn.1673-1689.2013.04.009

中文关键词: 厌氧氨氧化 水力停留时间 UASB

英文关键词: anaerobic ammonium oxidation hydraulic retention time up-flow anaerobic sludge bed

基金项目:国家“十二五”科技支撑计划项目(2011BAC11B05)

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中文摘要:

厌氧氨氧化菌较长的倍增时间导致了厌氧氨氧化颗粒反应器启动慢,作者采用上流式厌氧污泥床(UASB)对厌氧氨氧化颗粒反应器的快速启动进行了试验研究。以人工配水作原水(TN=200 mg/L、pH=7.5~7.8)、以常温放置的厌氧氨氧化颗粒污泥为种泥,在33~35℃条件下,通过水力停留时间的缩短,经过68 d的运行,成功启动厌氧氨氧化反应器,氨氮、亚硝酸盐氮消耗量与硝酸盐氮生成量之比为1∶1.08∶0.26。反应器运行稳定高效,在水力停留时间为4 h、有机负荷为1.2 kg/(m3.d)的条件下,NH4+-N和NO2--N的去除率分别为90%、99%。培养过程中,颗粒污泥颜色逐渐由黑色变为红棕色,所形成颗粒污泥具有极好的沉降性能,沉降速度达20~78 m/h。

英文摘要:

The start-up of Anammox process is very long due to the slow growth rate of the autotrophic anammox bacteria.The laboratory-scale study was carried out on the fast start-up of anaerobic ammonium oxidation in an up-flow anaerobic sludge bed with synthetic raw water(influent Total Nitrogen =200 mg/L,pH =7.5 ~7.8),and with anammox granule sludge stored at ambient temperature as the raw sludge feed.The results showed that quick start-up of anammox reactor was obtained after 68 day’s operation under the temperature of 33~35 ℃ by the decrease of hydraulic retention time.The ratio of NH4+-N removal,NO2--N removal and NO3--N production for the reactor was 1∶1.08∶0.26。 The reactor was operated stably and efficiently,and the NH4+-N and NO2--N removal was 90%,99% respectively under hydraulic retention time of 4 hours and organic loading rate of 1.2 kg/m3.d.During the operation,the color of the sludge was changed from black to reddish brown,and with excellent settling performance with settling velocity of between 20~78 m/h.

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