UASB反应器中高盐含氮废水脱氮过程研究  

Denitrification Process for the Wastewater Containing Nitrogen with High Salinity in UASB Reactor

作　　者：高燕群 倪伟敏[1] 赵樑[1] 周霞[1] 

机构地区：[1]杭州师范大学生命与环境科学学院,浙江杭州310036

出　　处：《杭州师范大学学报（自然科学版）》2015年第1期55-59,共5页Journal of Hangzhou Normal University(Natural Science Edition)

基　　金：浙江省创新团队科研项目(2012R10039-18);浙江省新苗计划项目(2014R421056);杭州师范大学本科创新能力提升工程项目

摘　　要：通过实验研究了在不同盐质量浓度、碳氮比和HRT条件下，高盐含氮废水的反硝化过程中碳源加入、TN、NO3-N和NO2-N的变化规律．分析结果表明：废水反硝化污泥在UASB反应器中经过驯化后可以适应氯离子质量浓度为O～20g／L的盐质量浓度环境．脱氮性能随着HRT增加和进水C／N增加而提高；而NO2-N积累也随着HRT增加和进水C／N增加而降低．经过优化反应条件，较适宜的条件为进水C／N=3：1，HRT=7．08hr．This paper studies the change rules of carbon source, TN, NOa-N and NO2-N in the denitrification process for the wastewater containing nitrogen with different salinity, C/N ratio and HRT condition. The results show that after the acclimation in the UASB reactor, the wastewater denitrification sludge is able to adjust to the circumstance with the concentration of chloride ion between 0 -20 g/L. Nitrogen removal can raise along with the increasing of C/N ratio or HRT. However, NO2-N accumulation rate is the direct opposite of nitrogen removal. The optimization conditions are C/N =3 ： 1 and HRT=7.08 hr.

关 键 词：废水反硝化 UASB反应器 硝态氮去除率 亚硝态氮积累率 

分 类 号：X703.1[环境科学与工程—环境工程]