Study on start-up of anaerobic ammonia oxidation reactors with different inocula
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摘要: 采用3组平行的SBR系统,分别接种厌氧颗粒污泥与好氧活性污泥的混合污泥、河道底泥与好氧活性污泥的混合污泥以及厌氧消化污泥与好氧活性污泥的混合污泥,以典型城市污水为进水,在相同运行环境下同时运行150~180 d,成功启动厌氧氨氧化装置,氨氮去除率分别达到88%,80%和85%,亚硝氮去除率均达到96%以上.但厌氧消化污泥与好氧活性污泥的混合污泥的启动周期更短,是相对优化的接种污泥.Abstract: Three different mixed sludges, including anaerobic granular sludge and aerobic activate sludge, river sediments and aerobic activate sludge, anaerobic digested sludge and aerobic activate sludge, were used as inocula in three parallel SBR systems treating typical municipal wastewater, respectively. It was found that the anaerobic ammonia oxidation (ANAMMOX)reactors could be successfully startedup after 150~180 days’ operation with the NH4+-N removal efficiencies of 88%, 80% and 85%, respectively. Moreover, all the NO2--N removal efficiencies of these reactors were more than 96%. Comparatively, the startup period of the seeding sludges, namely the mixed anaerobic digested sludge and aerobic activate sludge,was relatively the shortest. Therefore, the above mixed sludge can be considered a promising inoculum for the start-up of AMAMMOX reactor.
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