化工环保2018，Vol.38Issue(2)：164-168,5.DOI:10.3969/j.issn.1006-1878.2018.02.007
Cr(Ⅵ)对活性污泥系统反硝化过程的影响
Effects of hexavalent chromium on denitrification process of activated sludge system
摘要
Abstract
The effects of Cr(Ⅵ)on denitrification process of activated sludge system were investigated in a denitrification reactor. The removal rate of COD and nitrate nitrogen in the denitrification process was less affected under the condition of influent Cr(Ⅵ)addition 2.5 mg/L,but was more affected and reduced from 97.1% and 99.0%to 70.6% and 24.7% respectively when the influent Cr(Ⅵ)addition was 10.0 mg/L. During the recovery period without Cr(Ⅵ)addition,the removal of COD and nitrate nitrogen in the denitrification system can gradually restored,while the accumulation of nitrite nitrogen still happened in the middle of the recovery period,but it could return to the initial level with the extension of time. The reduction process of nitrate nitrogen to nitrite nitrogen was more susceptible to Cr(Ⅵ)than that of nitrite nitrogen.关键词
反硝化/活性污泥/六价铬(Cr(Ⅵ))/硝酸盐氮/亚硝酸盐氮Key words
denitrification/activated sludge/hexavalent chromium (Cr(Ⅵ))/nitrate nitrogen/nitrite nitrogen分类
资源环境引用本文复制引用
郑权,李新慧,纳斯图,宋颖,王晓慧,海热提..Cr(Ⅵ)对活性污泥系统反硝化过程的影响[J].化工环保,2018,38(2):164-168,5.基金项目
国家重点研发计划项目(2016YFC0401105) （2016YFC0401105）
北京市基地建设和人才培养专项(Z171100002217029) （Z171100002217029）
中央高校基本科研业务费项目(JD1704). （JD1704）
