SBR中好氧颗粒污泥的培养研究

Cultivation Investigation of Aerobic Granule Sludge in SBR

在SBR中,以厌氧颗粒泥为接种污泥,采用人工合成的模拟废水,34 d成功培养出了具有同步脱氮除磷效果的好氧颗粒污泥.颗粒污泥的粒径在0.5～1.8 mm,沉降速度为25～59 m/h.采用的C/N比为6.25,当COD和NH3-N的进水容积负荷分别为3.84 kg/（m^3·d）和0.612kg/（m^3.d）时,去除率分别都高达95％以上；而在整个试验过程中,TP保持较稳定的去除率50 ％～60％,这可能是由于C/N比、SRT和反硝化菌等因素共同作用的结果.

By using syntbetic domestic wastewater as feed, after 34 days operation, aerobic granular sludge used for simultaneous nitrogen and phosphorus removal was formed in SBR which was inoculated with anaerobic granular sludge. The particle size of the sludge were 0.5-1.8 ram, the settling velocity were 25-59 mh. 111 lhe ratio of C/N 6.25, under the conditions of organic volume rate of 2.4 kg/（m^3·d） and ammonia volume rate of 0.24 kg/（m^3·d）, the COD and NH4-N removal efficiencies could reach more than 95 % with the organic volume rate of 2.4 kg/（m^3·d） and ammonia volume rate of 0.24 kg/（m^3·d）. The system showed a