摘要
本试验主要考察间歇反应器缺氧阶段硝酸盐氮负荷ＮＮＯ－ｘ－Ｎ（ＫｇＮＯ－ｘ－Ｎ／ＫｇＭＬＳＳｄ）对脱氮效率的影响。试验结果表明：在一定水温和ＢＯＤ５／ＮＯｘ－Ｎ下，ＮＮＯｘ－Ｎ负荷对脱氮效率有显著影响。在反应器中采用高浓度污泥是降低ＮＮＯｘ－Ｎ的有效途径，有利于反应器脱氮速率ＶＤＮ（ｍｇ／ｌ·ｍｉｎ）的提高。此外，通过正交试验得出了在ＢＯＤ５／ＮＯ－ｘ一定时，ＮＮＯ－ｘ－Ｎ。
The influence of nitrate nitrogen loading on denitrification was studied during anoxic process in intermittent aeration system The test results show that the influence is remarkable The nitrate nitrogen loading N NO - x-N (KgNO - x-N/KgMLSS·d) is down as high MLSS is adopted in the reactor In addition,The quantitative relation among the N NO - x-N ,T℃ and η NO - x-N % is obtained by the regression analysis
出处
《四川环境》
1998年第3期1-5,共5页
Sichuan Environment
关键词
硝酸盐氮负荷
脱氮
废水处理
间歇曝气系统
Nitrate nitrogen loading,denitrification,regressive orthogonal method
