硬度和盐度对缺氧反硝化流化床脱氮效果的影响  

Effects of hardness and salinity on the denitrification effect of anoxic denitrification fluidized bed

作　　者：裴玉耜 荆建波 林志军 张营 张迪 PEI Yu-si;JING Jian-bo;LIN Zhi-jun;ZHANG Ying;ZHANG Di(Sinopec Jinling Company,Nanjing 210033,China;Nanjing Balance-Nature Environmental Protection Technology Co.,Ltd.,Nanjing 211200,China)

机构地区：[1]中国石油化工股份有限公司金陵分公司,江苏南京210033 [2]南京中衡元环保科技有限公司,江苏南京211200

出　　处：《环境生态学》2020年第9期85-88,共4页Environmental Ecology

基　　金：南京市专精特新项目(RD-04)资助。

摘　　要：通过试验探究了不同硬度和盐度条件下ADFB系统的运行情况,结果表明:进水硬度为520 mg/L时,ADFB系统出水的NO_3^--N去除率可达到90%,COD去除率可达到85%;当进水硬度大于1 000 mg/L时,系统出水的NO_3^--N去除率和COD去除率均逐渐降低,且进水硬度越高,两者的下降趋势越明显。在进水盐度≤10 g/L时,ADFB系统出水硝态氮去除率可以达到95%以上,COD的去除率可达到90%以上;当进水盐度≥15 g/L时,系统内的微生物受到明显的抑制,处理效果变差。在试验条件下,硬度和盐度的增加对系统出水pH影响较小。通过试验得出了ADFB系统对硬度和盐度的适应范围,为工程应用提供了重要依据。The experiment explored the operation of the ADFB system under different hardness and salinity conditions.The results show that when the influent hardness is 520 mg/L,the NO-3-N removal rate of the ADFB system effluent can reach 90%,and the COD removal the rate can reach 85%.When the influent hardness is greater than 1000 mg/L,the NO-3-N removal rate and COD removal rate of the system effluent are gradually reduced,and the higher the influent hardness,the more obvious the downward trend of the two.When the water salinity≤10 g/L,the nitrate nitrogen removal rate of the ADFB system effluent can reach more than 95%,and the removal rate of COD can reach more than 90%.When the influent salinity≥15 g/L,the microorganisms in the system are significantly inhibited,and the treatment effect becomes poor.Under the test conditions,the increase in hardness and salinity has little effect on the pH of the system effluent.Through the experiment,the adaptability range of the ADFB system to hardness and salinity is obtained,which provides a basis for engineering application.

关 键 词：硬度 盐度 缺氧反硝化流化床 硝态氮 

分 类 号：X703[环境科学与工程—环境工程]