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温度对AOA-SBR工艺同步脱氮除磷的影响

张兰河1, 周广吉1 ,庞香蕊2 ,王灵川1 ,张海丰1   

  1. 1东北电力大学化学工程学院,吉林 吉林 132012;2辽宁大学环境学院,辽宁 沈阳 110036
  • 出版日期:2013-12-05 发布日期:2013-12-05

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

ZHANG Lanhe1,ZHOU Guangji1,PANG Xiangrui 2,WANG Lingchuan1,ZHANG Haifeng1   

  1. 1 School of Chemical Engineering,Northeast Dianli University,Jilin 132012,Jilin,China;2 College of Environmental Sciences,Liaoning University,Shenyang 110036,Liaoning,China
  • Online:2013-12-05 Published:2013-12-05

摘要: 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。

关键词: 温度, 污泥龄, 序批式生物反应器, 脱氮除磷

Abstract: 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.

Key words: temperature, sludge retention time, sequencing batch reactor, nitrogen and phosphorus removal

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