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    188宝金博页面版: Several key factors influencing nitrogen removal performance of anammox process in a bio-filter at ambient temperature

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    内容提示： THEMATIC ISSUESeveral key factors influencing nitrogen removal performanceof anammox process in a bio-filter at ambient temperatureZhiyong Tian ? Jie Zhang ? Yonghui SongReceived: 30 September 2014/Accepted: 22 February 2015/Published online: 19 March 2015? Springer-Verlag Berlin Heidelberg 2015Abstract Anaerobic ammonium oxidation (Anammox)was a recent discovery of new energy-efficient, micro-biologically mediated nitrogen removal process, which wasmainly used for the treatment of rich ammonium waste-wa...

    文档格式：PDF | 页数：8 | 浏览次数：48 | 上传日期：2015-12-30 22:12:01 | 文档星级：
    THEMATIC ISSUESeveral key factors influencing nitrogen removal performanceof anammox process in a bio-filter at ambient temperatureZhiyong Tian • Jie Zhang • Yonghui SongReceived: 30 September 2014/Accepted: 22 February 2015/Published online: 19 March 2015? Springer-Verlag Berlin Heidelberg 2015Abstract Anaerobic ammonium oxidation (Anammox)was a recent discovery of new energy-efficient, micro-biologically mediated nitrogen removal process, which wasmainly used for the treatment of rich ammonium waste-water of low C/N ratio in a high operating temperature of35–40 ?C. But the growth rate of anammox bacteria wasextremely low and it was easily inhibited by many factors,which becomes a bottleneck problem in the application ofthis efficient nitrogen removal process in the actual was-tewater treatment at ambient temperature. So, influence ofseveral key factors (i.e., COD, methanol, hydrazine, hy-droxylamine, pH, nitrate, and phosphate) on the nitrogenremoval performance of the anammox process was re-searched to optimize the operation of the anammox processin a bio-filter, and the total nitrogen removal rate (R TN ) andthe linear correlation coefficient between the total nitrogenremoval rate (R TN ) and influent total nitrogen load (L TN ) ofit were assessed with the real municipal wastewater atambient temperature. The results demonstrated that (1) theinfluent of COD\100 mg/L had no visible inhibition onthe anammox process in the bio-filter, and the recom-mendation of COD\80 mg/L was suitable for the op-eration; (2) short-term shock load of methanol would givesignificant inhibition on the anammox bacteria, whichcould be restored by adding a small amount of hydrazineand hydroxylamine, but the recovery process was ex-tremely slow; (3) when the influent total nitrogen load in-creased suddenly, and the removal capacity of the bio-filterwas not enough, the temporary mixed dosing of hy-droxylamine and hydrazine could enhance the nitrogenremoval performance; (4) the anammox activity was verysensitive to the influent pH, and the best range of pH valueswas 7.3–7.6; (5) the nitrate of 23.56–463.14 mg N/L hadno obvious effect on the nitrogen removal performance;and (6) the phosphate itself had no significant inhibition onthe anammox bacteria physiologically and ecologically,but it could form a great deal of deposits, which would leadto the bio-filter plugging.Keywords Anammox ? Bio-filter ? Nitrogen removal ?Key factorIntroductionAnammox was an abbreviation for ‘‘anaerobic ammoniumoxidation’’, which was a recent discovery of a new energy-efficient, microbiologically mediated process (Van deGraaf et al. 1995). The bacteria, shown to be responsiblefor the anammox process, belonged to the order ofPlanctomycetales. The bacteria were autotrophic and didnot need organic carbon to support their growth (Strouset al. 1999a). Under anoxic conditions, the bacteria oxi-dized ammonium to produce nitrogen gas and smallZ. Tian ? Y. Song (&)State Key Laboratory of Environmental Criteria and RiskAssessment, Chinese Research Academy of EnvironmentalSciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, Chinae-mail: Songyh@craes.org.cnZ. Tiane-mail: Hkytzy2008@163.comZ. Tian ? Y. SongDepartment of Urban Water Environmental Research,Chinese Research Academy of Environmental Sciences,Beijing 100012, ChinaJ. ZhangKey Laboratory of Beijing for Water Quality Science and WaterEnvironment Recovery Engineering, Beijing University ofTechnology, Beijing 100022, People’s Republic of China123Environ Earth Sci (2015) 73:5019–5026DOI 10.1007/s12665-015-4232-y

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