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MAP沉淀法去除渗滤液中低浓度氨氮

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吴彦瑜, 彭晓春, 陈志良, 董家华, 周少奇. MAP沉淀法去除渗滤液中低浓度氨氮[J]. 环境工程学报, 2013, 7(3): 925-930.
引用本文: 吴彦瑜, 彭晓春, 陈志良, 董家华, 周少奇. MAP沉淀法去除渗滤液中低浓度氨氮[J]. 环境工程学报, 2013, 7(3): 925-930.
shu
Wu Yangyu, Peng Xiaochun, Chen Zhiliang, Dong Jiahua, Zhou Shaoqi. Treatment of low concentration ammonium nitrogen in landfill leachate with MAP precipitation[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 925-930.
Citation: Wu Yangyu, Peng Xiaochun, Chen Zhiliang, Dong Jiahua, Zhou Shaoqi. Treatment of low concentration ammonium nitrogen in landfill leachate with MAP precipitation[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 925-930.
shu

MAP沉淀法去除渗滤液中低浓度氨氮

  • 1.

    环境保护部华南环境科学研究所,广州 510655

  • 2.

    华南理工大学环境科学与工程学院,广州 510006

  • 基金项目:

    "十一五"国家科技支撑计划项目(2007BAC16B08)

    环保公益性行业科研专项(201009063,2011467024)

    公益性科研所基本科研业务专项(ZX-201106-089, 20603021001-2)

  • 中图分类号: X703.1

Treatment of low concentration ammonium nitrogen in landfill leachate with MAP precipitation

  • 1.

    South China Institute of Environmental Science, MEP, Guangzhou 510655, China

  • 2.

    College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China

  • Fund Project:

摘要

  • 摘要: 考察了pH值、搅拌时间、Mg∶N和N∶P摩尔比对鸟粪石化学沉淀法(MAP)去除垃圾渗滤液中低浓度氨氮的影响,使用Design Expert 7.1.3进行3水平4因素响应曲面中心复合设计优化实验,并通过二次多项式拟合和参数优化,得到:当pH为10,搅拌时间为30 min,Mg∶N摩尔比为1.41,N∶P摩尔比为1.34时,氨氮去除率(Y1)可以达到最大值71.2%,体系中的残留PO43--P浓度(Y2)趋近于零,达到我国《生活垃圾填埋场污染控制标准排放标准》的排放标准。此外,X射线衍射图谱的分析表明大部分沉淀物质为磷酸铵镁。
    Abstract: The effects of solution pH value, stirring time, Mg∶N, and N∶P molar ratios on removals of low ammonium nitrogen concentration were investigated using struvite precipitation. A quadratic statistical modeling was applied to investigate the improvement availability for high-level removal of ammonium-nitrogen. The three-level-four-variable central composite design (CCD) was proposed by Design Expert Software (version 7.1.3). The fit summary suggested that the quadratic models were the most appropriate one among all of the polynomial models to simulate NH4-N removal and remaining PO43--P concentration. Under optimum conditions of pH 10, Mg∶N molar ratio of 1.41, N∶P molar ratio of 1.34, the highest NH4-N removal 71.2% was achieved and nearly no PO43--P left in the treated leachate. The treated effluent met the new discharge standards of China. The XRD pattern indicated that the main precipitated crystal was struvite.
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    [2] Kim D., Ryu H. D., Kim M. S., et al. Enhancing struvite precipitation potential for ammonia nitrogen removal in municipal landfill leachate. J. Hazard. Mater., 2007. 146(1-2): 81-85
    [3] Lee J. J., Choi C. U., Lee M. J., et al. A study of NH3-N and P refixation by struvite formation in hybrid anaerobic reactor. Water Sci. Technol., 2004. 49(5-6): 207-214
    [4] Kochany J.,Lipczynska-Kochany E. Utilization of landfill leachate parameters for pretreatment by Fenton reaction and struvite precipitation—A comparative study. J. Hazard. Mater., 2009, 166(1): 248-254
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    [6] 商平, 刘涛利,刘彦博.苦卤-鸟粪石沉淀法预处理垃圾渗滤液. 环境化学, 2010,29(6): 1111-1115 Shang Ping, Liu Taoli, Liu Yanbo. Pretreatment of landfill leachate by the bitternmagnesium ammonium phosphate precipitation method. Environment Chemistry, 2010,29(6): 1111-1115 (in Chinese)
    [7] 张记市,王玉松.鸟粪石结晶法回收垃圾渗滤液氨氮研究. 环境工程学报, 2009,3(11): 2017-2020 Zhang Jishi, Wang Yusong. Struvite crystallization for recovering ammonia nitrogen from landfill leachate. Chinese Journal of Environmental Engineering, 2009,3(11): 2017-2020 (in Chinese)
    [8] 王健, 王长秋, 鲁安怀,等.鸟粪石结晶法预处理垃圾渗滤液中高浓度氨氮的研究.矿物学报, 2010,30(1): 26-32 Wang Jian, Wang Changqiu, Lu Anhuai, et al. Removal of ammonium-nitrogen as struvite crystallization from landfill leachate. Acta Mineralogica Sinica, 2010,30(1): 26-32 (in Chinese)
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出版历程
  • 收稿日期:  2011-11-09
  • 刊出日期:  2013-03-18
吴彦瑜, 彭晓春, 陈志良, 董家华, 周少奇. MAP沉淀法去除渗滤液中低浓度氨氮[J]. 环境工程学报, 2013, 7(3): 925-930.
引用本文: 吴彦瑜, 彭晓春, 陈志良, 董家华, 周少奇. MAP沉淀法去除渗滤液中低浓度氨氮[J]. 环境工程学报, 2013, 7(3): 925-930.
shu
Wu Yangyu, Peng Xiaochun, Chen Zhiliang, Dong Jiahua, Zhou Shaoqi. Treatment of low concentration ammonium nitrogen in landfill leachate with MAP precipitation[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 925-930.
Citation: Wu Yangyu, Peng Xiaochun, Chen Zhiliang, Dong Jiahua, Zhou Shaoqi. Treatment of low concentration ammonium nitrogen in landfill leachate with MAP precipitation[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 925-930.
shu

MAP沉淀法去除渗滤液中低浓度氨氮

  • 1.  环境保护部华南环境科学研究所,广州 510655
  • 2.  华南理工大学环境科学与工程学院,广州 510006
  • 收稿日期:  2011-11-09
基金项目:

"十一五"国家科技支撑计划项目(2007BAC16B08)

环保公益性行业科研专项(201009063,2011467024)

公益性科研所基本科研业务专项(ZX-201106-089, 20603021001-2)

摘要: 考察了pH值、搅拌时间、Mg∶N和N∶P摩尔比对鸟粪石化学沉淀法(MAP)去除垃圾渗滤液中低浓度氨氮的影响,使用Design Expert 7.1.3进行3水平4因素响应曲面中心复合设计优化实验,并通过二次多项式拟合和参数优化,得到:当pH为10,搅拌时间为30 min,Mg∶N摩尔比为1.41,N∶P摩尔比为1.34时,氨氮去除率(Y1)可以达到最大值71.2%,体系中的残留PO43--P浓度(Y2)趋近于零,达到我国《生活垃圾填埋场污染控制标准排放标准》的排放标准。此外,X射线衍射图谱的分析表明大部分沉淀物质为磷酸铵镁。

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