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首页> 外文期刊>Desalination and water treatment >Effect of nitrate concentration on performance of pre-denitrification moving bed biofilm reactor system in treating coal gasification wastewater
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Effect of nitrate concentration on performance of pre-denitrification moving bed biofilm reactor system in treating coal gasification wastewater

机译：硝酸盐浓度对预硝化移动床生物膜反应器系统处理煤气化废水性能的影响

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摘要

An anoxic moving bed biofilm reactor (ANMBBR)followed by an aerobic moving bed biofilm reactor (AEMBBR) operated as pre-denitrification system was used to investigate the effect of different influent NO_3~--N concentrations on performance of the pre-denitrification system in treating real coal gasification wastewater. Influent NO_3~--N concentration was controlled at 50, 100, 200, and 400 mg/L during the experiments. Evolution of COD and phenols in the effluent of the ANMBBR and AEMBBR, and performance of nitrification in the AEMBBR with different influent NO_3~--N concentrations were studied. Almost complete denitrification was achieved when influent NO_3~--N concentration was 100 mg/L. NO_3~--N and NO_2~--N accumulated in the effluent of the ANMBBR with influent NO_3~--N concentrations of 200 and 400 mg/L. NO_3~--N concentration of 400 mg/L facilitated high NH_4~+-N removal efficiency in the AEMBBR when influent NH_4~+-N concentration was around 165 mg/L. The ratio of COD_(consumed)/NO_3~--N_(consumed) along with phenols removal of the ANMBBR under different influent NO_3~--N concentrations was discussed.
机译：采用缺氧移动床生物膜反应器（ANMBBR），接着以需氧移动床生物膜反应器（AEMBBR）作为预脱氮系统，研究了进水NO_3-〜N浓度对预氧化系统性能的影响。处理真正的煤气化废水。实验期间进水NO_3-〜N浓度控制在50、100、200和400 mg / L。研究了ANMBBR和AEMBBR废水中COD和酚类的演变，以及不同进水NO_3-〜N浓度下AEMBBR中的硝化性能。当进水NO_3-〜N浓度为100 mg / L时，几乎完成了反硝化作用。在进水NO_3〜–N浓度分别为200和400 mg / L的ANMBBR废水中，NO_3〜--N和NO_2〜--N累积。当进水NH_4〜+ -N浓度约为165 mg / L时，400 mg / L的NO_3〜–N浓度可促进AEMBBR中较高的NH_4〜+ -N去除效率。讨论了在不同进水NO_3 --- N浓度下，COMB_（消耗）/ NO_3〜--N_（消耗）的比例以及ANMBBR的酚去除率。

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  • 来源
    《Desalination and water treatment》 |2013年第33期|5996-6002|共7页
  • 作者

    Hui-qiang Li; Hong-jun Han; Mao-an Du;

  • 作者单位

    College of Architecture and Environment, Sichuan University, Chengdu 610065, China, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin150090, China;

    State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin150090, China;

    State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin150090, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Moving bed biofilm reactor; Coal gasification wastewater; Nitrate concentration; COD; Phenols;

    机译：移动床生物膜反应器;煤气化废水;硝酸盐浓度化学需氧量酚类;

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