碳氮比对人工湿地污水处理效果的影响  

Effect of influent C/N ratio on performance of wastewater treatment in constructed wetlands

作　　者：贾文林[1] 吴娟[1,2] 武爱国[3] 谢慧君[4] 张建[1] 

机构地区：[1]山东大学环境科学与工程学院,济南250100 [2]青岛农业大学资源与环境学院,青岛266109 [3]煤炭工业济南设计研究院有限公司,济南250031 [4]山东大学环境研究院,济南250100

出　　处：《环境工程学报》2010年第4期767-770,共4页Chinese Journal of Environmental Engineering

基　　金：国家重大科技专项(2009ZX07210-009);国家科技部"十一五"科技支撑计划课题(2006BAC10B03);西部交通建设科技项目(200731822108)

摘　　要：采用表面流人工湿地系统静态小试装置,考察了低、中、高3组不同进水COD/N(2,5,10)对系统中氮、磷及COD去除效果的影响。结果表明:进水C/N的变化对COD的去除率影响不大,平均去除率达到94.6%。TN的去除率随着COD/N的增大而逐渐升高,在C/N=5时达到63.8%,继续提高COD/N,TN的去除率变化不大。NH4+-N去除率随着COD/N的增加而降低。随着碳源的增加,释磷菌能够从进水中获得充足的碳源,从而可以比较充分地释磷,因此,磷的去除率随COD/N的增加而提高。The effects of different influent COD/N ratios （2,5,10） on the removal efficiency of total nitrogen, phosphorus and COD were investigated in surface-flow constructed wetlands. The results showed that regardless of the COD/N ratio, excellent COD （average 94.6% ） removal efficiency was maintained throughout the experiment. TN removal efficiency was enhanced as COD/N ratio increased, and reached to 63.8% when COD/ N was 5. Afterwards, it increased very slowly. NH4-N removal efficiency decreased as COD/N ratio increased. With the increase of COD/N ratio, more phosphorous was removed because PAOs could get more organic carbon source from the influent to release more phosphorus.

关 键 词：人工湿地 COD/N COD 脱氮 除磷 

分 类 号：X703.1[环境科学与工程—环境工程]