不同价态硫素强化人工湿地反硝化脱氮作用的研究  

Enhancement of denitrification by different valence sulfur in constructed wetlands

作　　者：田海莹 宋新山[1] 王宇晖[1] Tian Haiying;Song Xinshan;Wang Yuhui(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620

出　　处：《工业水处理》2020年第7期75-79,共5页Industrial Water Treatment

基　　金：2019年度上海市青年科技启明星计划项目(19QC1401100)。

摘　　要：将硫(Na2S、Na2S2O3、S0)作为电子供体引入人工湿地,考察HRT、pH及碳源对脱氮效果的影响,分析不同硫对反硝化过程的促进作用。结果表明,pH=7、NO3--N 40 mg/L、C/N=0时,含Na2S、Na2S2O3、S的人工湿地的脱氮效率分别比对照组高27.83%、9.56%、8.36%。碳源充足时,添加Na2S、Na2S2O3、S的人工湿地脱氮效率比对照组提升48.31%、26.08%、25.44%,说明硫自养-异养联合反硝化效果优于自养反硝化。Sulfur(Na2S,Na2S2O3,S0)were introduced into constructed wetlands as electronic donors.The effects of HRT,pH and carbon source on denitrification were investigated,and the effects of different sulfur on denitrification were analyzed.The results showed that at pH=7,NO3--N 40 mg/L and C/N=0,the nitrogen removal efficiency of con-structed wetlands containing Na2S,Na2S2O3 and S was 27.83%,9.56%and 8.36%higher than the control group respe-ctively.When the carbon source was sufficient,the denitrification efficiency of constructed wetlands added with Na2S,Na2S2O3 and S increased by 48.31%,26.08%and 25.44%compared with the control group,indicating that the effect of sulfur autotrophic-heterotrophic denitrification was better than that of autotrophic denitrification.

关 键 词：人工湿地 反硝化 硫 硝氮去除率 

分 类 号：X703.1[环境科学与工程—环境工程]