温度对AOA-SBR工艺同步脱氮除磷的影响

为了提高脱氮除磷的效率，采用序批式生物反应器（SBR）工艺处理模拟生活污水，考察了不同温度下N/P、污泥龄（SRT）对厌氧/好氧/缺氧序批式生物反应器（AOA-SBR）工艺同步脱氮除磷效能的影响。结果表明：当温度为10 ℃、N/P为2～3、SRT为20 d时，NH4+-N、TN和TP去除率分别为78%、69%和56%，污泥产率YS为0.339 kgSS/(kgBOD5)，污泥含磷率PC为4.68%。当温度为25 ℃、N/P为3～5、SRT为15 d时，NH4+-N、TN和TP的去除率分别为88%、83%和91%，污泥产率YS为0.253 kgSS/(kgBOD5)，污泥含磷率PC为6.35%。当温度为35 ℃、N/P为5～7、SRT为10 d时，NH4+-N、TN和TP去除率分别为80%、66%和73%，污泥产率YS为0.225 kgSS/(kgBOD5)，污泥含磷率PC为7.42%。污泥产率YS随着温度和污泥龄的增加而降低，通过调节温度和污泥龄能够实现污泥减量。

Effects of temperature on simultaneous nitrogen and phosphorus removal using AOA-SBR process

The simulated sewage wastewater was treated continuously using SBR process in order to improve the removal efficiency of nitrogen and phosphorus. Effects of mass ratio of nitrogen to phosphorus（N/P）and sludge retention time（SRT）on simultaneous nitrogen and phosphorus removal were investigated by using anaerobic/aerobic/anoxic sequencing batch reactor (AOA-SBR) at different temperatures. The results showed that removal efficiencies of NH4+-N，TN and TP were 78%，69% and 56%，respectively，and sludge yield (YS） was 0.339 kgSS/(kgBOD5)，and phosphorus content in the sludge was 4.68% under the condition of N/P of 2－3 and SRT of 20d at 10 ℃. The removal efficiencies of a NH4+-N，TN and TP weer 80%，66% and 73%，respectively and sludge yield (YS) was 0.225 kgSS/(kgBOD5)，and phosphorus content in the sludge was 7.42% under the condition of N/P of 5－7 and sludge age of 10d at 35 ℃. The removal efficiencies of NH4+-N，TN and TP were 88%，83% and 91%，respectively and sludge yield) (YS)was 0.253 kgSS/(kgBOD5)，and phosphorus content in the sludge was 6.35% under the condition of N/P of 5－7 and SRT of 15d at 25 ℃. Sludge yield was reduced with the increasing temperature and SRT，and sludge reduction can be realized by adjusting the temperature and SRT.