流速对环流式活性污泥-生物膜组合工艺除磷脱氮性能的影响  

EFFECT OF VELOCITY ON PHOSPHORUS AND NITROGEN REMOVAL IN CYCLIC ACTIVATED SLUDGE COMBINED BIOFILM SYSTEM

作　　者：郭倩[1] 吉芳英[1] 熊黎[1] 赵易[1] 张科 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]广东省水环境污染控制重点实验室,广东广州510400

出　　处：《水处理技术》2012年第10期75-78,共4页Technology of Water Treatment

基　　金：国家水体污染控制与治理重大科技专项(2009ZX07318-003);广东省水环境污染控制重点实验室项目

摘　　要：为探索抵抗小城镇水质波动的冲击开发环流式活性污泥-生物膜组合工艺(CASBS)的新技术抗冲击负荷机理,结合流速对CASBS功能分区的影响研究CASBS除磷脱氮性能。结果表明,流速直接影响CASBS脱氮除磷功能区大小,当外环平均水流速度为0.15 m/s时,即使进水水质波动很大,出水也能稳定达到GB 18918-2002一级A标准。当进水COD和TN、氨氮、TP的质量浓度分别为132～521mg/L和10.05～62.24、32.17～71.08、2.88～8.26mg/L,平均去除率分别为95.22%和80.44%、93.77%、93.73%。Cyclic activated sludge combined biofilm system （CASBS）, an effective wastewater disposal technique, was developed for water treatment in small town of China, which had great fluctuation of water quality. In order to explore the shock loading mechanism of CASBS, thoroughly, the Influence of flow rate on function division and nitrogen and phosphorus removal performance had been studied in CASBS. The results were： Different flow rates affected the size of the functional areas in CASBS, directly. When the average water velocity in outer circle of was 0.15 m/s, and waste water quality changed widely, the effluent could meet Category A, Class 1 under the standard of GB 18918- 2002. When the concentration of COD and TN, NH3-N, TP in influent were 132-521 mg/L and 10.05-62.24, 32.17-71.08, 2.88-8.26 mg/L, respectively, the removal rote of them were 86.31% and 57.8%, 97.26%, 98.18%, respectively.

关 键 词：流速 功能分区 环流式活性污泥-生物膜组合工艺 脱氮 除磷 

分 类 号：X703.1[环境科学与工程—环境工程]