摘要
氧化沟工艺因具有流程简单、抗冲击负荷能力强、处理效果较好以及剩余污泥量少且稳定等优点而曾备受国内外推崇。为确定在强调脱氮除磷的今天,氧化沟是否一如既往地具有这样的优势而进行了一系列模拟试验。与标准A2/O工艺进行脱氮除磷方面的功效与能效比较后发现,"厌氧+氧化沟"工艺在功效方面不及A2/O工艺,A2/O工艺只需前者60%的体积便可以达到同样的处理效果。能耗分析表明,采用机械曝气方式的氧化沟工艺在能效方面与A2/O工艺相当,而采用鼓风曝气+水下推进方式的氧化沟之能耗要明显高于A2/O工艺。
Oxidation ditches were very popular at home and abroad due to their simple process configuration, strong resistance to shock loading, efficient COD removal, less and stable production of excess sludge. Nevertheless, the performance of oxidation ditches against today＇ s nutrient removal stand- ards needs to be tested. Based on modeling, a practical oxidation ditch with an anaerobic reactor was compared with a standard A2/O process. The results reveal that the oxidation ditch is inferior to the A2/ O process in biological nutrient removal （BNR）. With 60% of the volume of oxidation ditch, the A2/O process can achieve the same removal efficieneies of COD, N and P. An analysis on energy consumption indicates that the oxidation ditch with mechanical aeration will have the same energy consumption as the A2/O process ; the oxidation ditch with bubble aeration and submerged propeller will be more energy-con- suming than the A2/O process.
出处
《中国给水排水》
CAS
CSCD
北大核心
2010年第1期1-5,共5页
China Water & Wastewater
基金
北京市属高等学校人才强教深化计划--高层次人才资助项目(PHR20100508)
关键词
氧化沟
A2/O
脱氮除磷
数学模拟
功效
能效
oxidation ditch
A2/O
phosphorus and nitrogen removal
mathematical simulation
function efficiency
energy efficiency
