DO浓度及其空间分布对Orbal氧化沟去除污染物效果  

Effect of DO Concentration and the Spatial Distribution on Pollutants Removal by Orbal Oxidation Ditch

作　　者：赵群英[1] 田敏 李侃 Zhao Qunying;Tian Min;Li Kan(School of Civil Engineering,Xi＇an Technological University,Xi＇an 710021,Chian;Xi＇an Sewage Treatment Co,Ltd,Xi＇an 710024,China)

机构地区：[1]西安工业大学建工学院,陕西西安710021 [2]西安市污水处理有限责任公司,陕西西安710024

出　　处：《净水技术》2018年第8期87-89,94,共4页Water Purification Technology

基　　金：陕西省教育厅资助项目(12JK0641)

摘　　要：采用实际运行的Orbal氧化沟工艺处理城市污水,考察了DO浓度及其空间上分布对氧化沟出水的影响。结果表明:Orbal氧化沟外沟转碟不安装导流板时,可在纵向形成好氧—缺氧—厌氧环境,有利于实现COD、TN和NH3-N的高效去除和磷的充分释放;Orbal氧化沟中沟、內沟采用传统的设计与运行方式,DO浓度分别保持在1 mg/L和2 mg/L以上时,对污染物进行进一步去除,出水可全面达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)中的一级A标准。Orbal oxidation ditch process of actual operation is applied to examine the impact of DO concentration and spatial distrilbution in municipal wastewater treatment. The results show that when outside ditch of Orbal oxidation ditch isn＇t installed backflow plate, aerobic,anoxic and anaerobic environment can be formed in longitudinal direction,and it is beneficial to COD,TN and NH3-N,and full release of phosphorus. If mid and inner ditch of and operation mode,the concentration of DO is maintained at above 1 m/L and 2 m/L,the poutants will ent water quality can reach the standard of tlie first class and grade A of Urban Sewage Treatment Plant（GB 18918-2002）.

关 键 词：奥贝尔氧化沟 溶解氧浓度 纵向分布 污染物去除 

分 类 号：TU992[建筑科学—市政工程]