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NaCl对好氧颗粒污泥短程硝化反硝化的影响

张彦灼 李 军 陈光辉 卞 伟 李 芸 王昌稳

张彦灼, 李 军, 陈光辉, 卞 伟, 李 芸, 王昌稳. NaCl对好氧颗粒污泥短程硝化反硝化的影响[J]. 环境科学研究, 2015, 28(5): 823-830.
引用本文: 张彦灼, 李 军, 陈光辉, 卞 伟, 李 芸, 王昌稳. NaCl对好氧颗粒污泥短程硝化反硝化的影响[J]. 环境科学研究, 2015, 28(5): 823-830.
ZHANG Yanzhuo, LI Jun, CHEN Guanghui, BIAN Wei, LI Yun, WANG Changwen. Effects of NaCl Concentration on Partial Nitrification and Denitrification by Aerobic Granular Sludge[J]. Research of Environmental Sciences, 2015, 28(5): 823-830.
Citation: ZHANG Yanzhuo, LI Jun, CHEN Guanghui, BIAN Wei, LI Yun, WANG Changwen. Effects of NaCl Concentration on Partial Nitrification and Denitrification by Aerobic Granular Sludge[J]. Research of Environmental Sciences, 2015, 28(5): 823-830.

NaCl对好氧颗粒污泥短程硝化反硝化的影响

基金项目: 国家水体污染控制与治理科技重大专项(2014ZX07201-011);北京工业大学第十三届研究生科技基金项目(ykj-2014-10545)

Effects of NaCl Concentration on Partial Nitrification and Denitrification by Aerobic Granular Sludge

  • 摘要: 利用SBR(序批式反应器)研究了不同ρ(NaCl)、曝气时间、ρ(CODCr)、进水ρ(NH4+-N)对AGS(好氧颗粒污泥)短程硝化反硝化的影响. 结果表明,在pH、温度和ρ(DO)为8.0、30 ℃和3 mg/L条件下,以及ρ(NaCl)、曝气时间、ρ(CODCr)和ρ(NH4+-N)为20 g/L、8 h、600 mg/L和70 mg/L时,ηA(NH4+-N去除率)和NAR(NO2--N积累率)达到最佳. 当进水ρ(NaCl)为10 g/L时,NOB(亚硝酸盐氧化菌)被完全抑制,AOB(氨氧化菌)能够保持正常活性. ρ(CODCr)较高时能够促进NAR的提高. 经过116 d的培养,AGS短程硝化反硝化的耐盐极限为50 g/L,此时ηA小于50%,AOB被严重抑制,AGS丧失硝化能力. AGS的同步硝化反硝化作用明显,SND(同步硝化反硝化率)平均值为24.2%,SNDV(同步硝化反硝化比速率)平均值为0.63 h-1,低ρ(DO)比高ρ(DO)下的SND同步硝化反硝化作用更为明显.

     

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