碳氮比对AAO泥水回流工艺处理焦化废水的影响  

Effect of C/N on AAO with the Sludge Reflux Process for the Coking Wastewater Treatment

作　　者：包胜[1] 张光海[1] 蔡建安[1] 

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243002

出　　处：《安徽化工》2010年第6期58-60,63,共4页Anhui Chemical Industry

摘　　要：采用AAO泥水回流工艺处理焦化废水，研究了进水碳氮比（C／N）对COD、氨氮及TN去除率的影响。研究表明，进水碳氮比（C/N）在12—25范围内，厌氧滤池COD去除率和氨化率分别达到37％和30％；缺氧进水碳氮比（C／N）控制在5．3-11．9范围内，MO泥水回流系统去除COD与氨氮效果的影响不明显，平均去除率分别为89．6％和95．2％；缺氧进水碳氮比（C/N）控制在7．5～8．6范围内，系统具有较好的TN去除率，平均值为72．2％。出水COD和NH3-N均能够达到污水综合排放标准中的二级标准。The coking wastewater was treated by A/A/O process with the sludge and wastewater back to anoxic tank from the MBR. The influence of C/N ratio on COD／NH3-N／TN removal by A/A/O process was studied. The results of the test showed that, when C/N ratio was 12-25, the removal of COD and the ammonification rate of NH3-N in anaerobic reactor were 37% and 30%,respectively; the removals of COD and NH3-N were not influenced by influent C/N ratio（5.3-11.9） in anoxic tank, and the average removals of them were 89.6%, 95.2%, respectively; the best denitrification effect could be obtained when the influent C/N ratio was 7.5-8.6 in anoxie tank, and the average removal of nitrification was 72.2%. COD and NH3-N in effluents from the A/A/O process achieved the secondary standard criteria specified in Integrated Standard of Wastewater Discharge.

关 键 词：C/N A/A/O 焦化废水 生物脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]