C/N值对膜泥法一体化OCO工艺脱氮除碳的影响  

Influence of Carbon to Nitrogen Ratios on Carbon and Nitrogen Removal in Integral OCO Process with Biofilm and Activated Sludge

作　　者：殷旭东[1,2] 李德豪[1,3] 凌洪吉[1,2] 高桂枝[2] 

机构地区：[1]广东石油化工学院化工与环境工程学院,广东茂名525000 [2]南京信息工程大学环境科学与工程学院,江苏南京210044 [3]华东理工大学资源与环境工程学院,上海200237

出　　处：《中国给水排水》2011年第19期92-95,共4页China Water & Wastewater

摘　　要：在保持HRT、DO、pH值等参数基本不变的条件下,研究了不同进水COD浓度和C/N值对膜泥法一体化OCO工艺脱氮除碳效果的影响。研究表明,一体化OCO工艺对BOD_5、COD均具有很好的去除效果,出水COD和BOD_5浓度分别低于60和20 mg/L;随进水COD浓度和C/N值的增加,出水NH_3-N浓度逐渐增大,去除率逐渐降低,而对总氮的去除率呈波浪式变化。进水COD为300 mg/L(C/N值为7.5左右)时的除污效果最好,此时系统对BOD_5、COD、NH_3～N和TN的去除率分别达到98%、95%、98%和80%。该工艺有较强的降解有机污染物的能力和抗进水COD浓度和C/N值冲击的能力,能够满足处理城市生活污水的需要。The influences of different influent COD concentrations and carbon to nitrogen ratios （C/N ratios） on the carbon and nitrogen removal in the integral OCO process with biofilm and activated sludge were studied when some operation parameters, such as HRT, DO and pH, were almost constant. The results show that this integral OCO process has high removal efficiency of BOD5 and COD, the effluent BODs and COD are less than 20 mg/L and 60 mg/L respectively. The effluent NH3 - N increases gradually, its removal efficiency reduces gradually, and the removal efficiency of total nitrogen changes in wave form when the influent COD and C/N ratios increase. When the influent COD is about 300 mg/L and C/N ratio is about 7.5, the integral OCO process has the best removal efficiencies of BOD5 , COD, NH3 -N and TN, their removal rates are 98% , 95% , 98% and 80% respectively. This process can meet the requirement for treating domestic sewage for its strong degradation ability for organic pollutants and strong resistance to influent COD and C/N shock load.

关 键 词：膜泥法一体化OCO工艺 C/N值 脱氮除碳 

分 类 号：X703[环境科学与工程—环境工程]