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流化床造粒法回收猪场废水中氮磷:鸟粪石颗粒的形貌与组成

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邓玉君, 叶志隆, 叶欣, 楼耀尹, 宋子龙, 潘松青, 陈少华. 流化床造粒法回收猪场废水中氮磷:鸟粪石颗粒的形貌与组成[J]. 环境工程学报, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
引用本文: 邓玉君, 叶志隆, 叶欣, 楼耀尹, 宋子龙, 潘松青, 陈少华. 流化床造粒法回收猪场废水中氮磷:鸟粪石颗粒的形貌与组成[J]. 环境工程学报, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
shu
Deng Yujun, Ye Zhilong, Ye Xin, Lou Yaoyin, Song Zilong, Pan Songqing, Chen Shaohua. Phosphorus recovery from swine wastewater by struvite granulation in fluidized bed: morphology and composition of granules[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
Citation: Deng Yujun, Ye Zhilong, Ye Xin, Lou Yaoyin, Song Zilong, Pan Songqing, Chen Shaohua. Phosphorus recovery from swine wastewater by struvite granulation in fluidized bed: morphology and composition of granules[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
shu

流化床造粒法回收猪场废水中氮磷:鸟粪石颗粒的形貌与组成

  • 1.

    中国科学院城市污染物转化重点实验室, 厦门 361021

  • 2.

    中国科学院城市环境研究所, 厦门 361021

  • 3.

    福建师范大学环境科学与工程学院, 福州 364103

  • 基金项目:

    国家高技术研究发展计划(863)项目(2011AA060902)

    厦门市科技计划(3502Z20132016)

  • 中图分类号: X703

Phosphorus recovery from swine wastewater by struvite granulation in fluidized bed: morphology and composition of granules

  • 1.

    Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Xiamen 361021, China

  • 2.

    Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China

  • 3.

    College of Environmental Science and Engineering, Fujian Normal University, Fuzhou 364103, China

  • Fund Project:

  • 摘要: 针对现有流化床鸟粪石造粒法回收废水中氮磷时缺乏有效的方法定量描述颗粒的形貌及对应的组分含量,综合图像法、FTIR、XRD、元素组成分析和物料衡算等方法,分析了分段式流化床不同区域的颗粒形貌及对应的组分情况。研究结果表明,流化床不同区域内上升流速分别为15.0、30.6和60.0 mm/s,对应鸟粪石颗粒平均粒度分别为703、963和1 747 μm,相应的颗粒形貌为絮团、团聚式颗粒和包层式颗粒。颗粒的主要成分为鸟粪石(MgNH4PO4·6H2O,MAP)、钾型鸟粪石(MgKPO4·6H2O,MKP)、无定型磷酸钙(Ca3(PO4)2·xH2O,ACP)其中MAP含量均大于92%,ACP 1.26%~1.75%,MKP含量为3.75%~3.91%,有机物含量低于0.4%。回收的颗粒中Cr、As、Cd和Pb等重金属含量低于现行的化肥重金属控制标准(GB/T 23349-2009)限值,有效降低了重金属污染的风险,提高了回收颗粒的品质。
    Abstract: Image analysis, in combination with Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and material balance, was adopted to clarify the morphological and compositional changes in struvite pellets during struvite recovery from swine wastewater in a three-section fluidized-bed reactor. The results revealed that under upflow velocities of 15.0, 30.6, and 60.0 mm/s, condensed flocs, agglomerates, and coated granules with mean particle sizes of 703, 963, and 1 747 μm, respectively were detected in the reactor. Struvite (MgNH4PO4·6H2O, MAP) was the dominant component of the granules (weight ratio > 92%), and was mixed with K-struvite (MgKPO4·6H2O, MKP) (3.75% to 3.91%), amorphous calcium phosphate (Ca3(PO4)2·xH2O) (1.26% to 1.75%) and organic matter (less than 0.4%). It was noted that the contents of heavy metals in the collected granules were below the legal limits prescribed by the Chinese National Fertilizer Standards (GB/T 23349-2009).
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  • 收稿日期:  2015-02-14
  • 刊出日期:  2016-06-03
邓玉君, 叶志隆, 叶欣, 楼耀尹, 宋子龙, 潘松青, 陈少华. 流化床造粒法回收猪场废水中氮磷:鸟粪石颗粒的形貌与组成[J]. 环境工程学报, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
引用本文: 邓玉君, 叶志隆, 叶欣, 楼耀尹, 宋子龙, 潘松青, 陈少华. 流化床造粒法回收猪场废水中氮磷:鸟粪石颗粒的形貌与组成[J]. 环境工程学报, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
shu
Deng Yujun, Ye Zhilong, Ye Xin, Lou Yaoyin, Song Zilong, Pan Songqing, Chen Shaohua. Phosphorus recovery from swine wastewater by struvite granulation in fluidized bed: morphology and composition of granules[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
Citation: Deng Yujun, Ye Zhilong, Ye Xin, Lou Yaoyin, Song Zilong, Pan Songqing, Chen Shaohua. Phosphorus recovery from swine wastewater by struvite granulation in fluidized bed: morphology and composition of granules[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2933-2939. doi: 10.12030/j.cjee.201501009
shu

流化床造粒法回收猪场废水中氮磷:鸟粪石颗粒的形貌与组成

  • 1.  中国科学院城市污染物转化重点实验室, 厦门 361021
  • 2.  中国科学院城市环境研究所, 厦门 361021
  • 3.  福建师范大学环境科学与工程学院, 福州 364103
  • 收稿日期:  2015-02-14
基金项目:

国家高技术研究发展计划(863)项目(2011AA060902)

厦门市科技计划(3502Z20132016)

摘要: 针对现有流化床鸟粪石造粒法回收废水中氮磷时缺乏有效的方法定量描述颗粒的形貌及对应的组分含量,综合图像法、FTIR、XRD、元素组成分析和物料衡算等方法,分析了分段式流化床不同区域的颗粒形貌及对应的组分情况。研究结果表明,流化床不同区域内上升流速分别为15.0、30.6和60.0 mm/s,对应鸟粪石颗粒平均粒度分别为703、963和1 747 μm,相应的颗粒形貌为絮团、团聚式颗粒和包层式颗粒。颗粒的主要成分为鸟粪石(MgNH4PO4·6H2O,MAP)、钾型鸟粪石(MgKPO4·6H2O,MKP)、无定型磷酸钙(Ca3(PO4)2·xH2O,ACP)其中MAP含量均大于92%,ACP 1.26%~1.75%,MKP含量为3.75%~3.91%,有机物含量低于0.4%。回收的颗粒中Cr、As、Cd和Pb等重金属含量低于现行的化肥重金属控制标准(GB/T 23349-2009)限值,有效降低了重金属污染的风险,提高了回收颗粒的品质。

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