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煅烧改性净水厂污泥的除磷特性

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刘啟迪, 周真明, 张红忠, 费霞丽, 谢保金, 李书文, 苑宝玲. 煅烧改性净水厂污泥的除磷特性[J]. 环境化学, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
引用本文: 刘啟迪, 周真明, 张红忠, 费霞丽, 谢保金, 李书文, 苑宝玲. 煅烧改性净水厂污泥的除磷特性[J]. 环境化学, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
shu
LIU Qidi, ZHOU Zhenming, ZHANG Hongzhong, FEI Xiali, XIE Baojin, LI Shuwen, YUAN Baoling. Phosphorus removal characteristics of calcined water treatment plant sludge[J]. Environmental Chemistry, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
Citation: LIU Qidi, ZHOU Zhenming, ZHANG Hongzhong, FEI Xiali, XIE Baojin, LI Shuwen, YUAN Baoling. Phosphorus removal characteristics of calcined water treatment plant sludge[J]. Environmental Chemistry, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
shu

煅烧改性净水厂污泥的除磷特性

  • 1.

    华侨大学土木工程学院, 厦门, 361021;

  • 2.

    泉州市自来水有限公司, 泉州, 362000;

  • 3.

    厦门水务集团有限公司, 厦门, 361008;

  • 4.

    厦门水务中环制水有限公司制水三部, 厦门, 361000

  • 基金项目:

    福建省高校产学合作重大项目（2018Y4101），国家自然科学基金（51678255，51578250），福建省自然科学基金（2017J01096），泉州市高层次人才创新创业项目（2017Z025）和华侨大学中青年教师科研提升资助计划（ZQN-PY313）资助

Phosphorus removal characteristics of calcined water treatment plant sludge

  • 1.

    College of Civil Engineering, Huaqiao University, Xiamen, 361021, China;

  • 2.

    Quanzhou Water Limited Company, Quanzhou, 362000, China;

  • 3.

    Xiamen Water Group Limited Company, Xiamen, 361008, China;

  • 4.

    The Third Sector, Water Production Subsidiary Company of Xiamen Water Group Limited Company, Xiamen, 361000, China

  • Fund Project: Supported by the Key Project of Science and Technology Cooperation Between Industry and University of Fujian (2018Y4101), the National Natural Science Fund of China (51678255, 51578250), the Natural Science Foundation of Fujian Province of China (2017J01096), the Science and Technology Plan Fund of Quanzhou City (2017Z025) and the Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University ZQN-PY313)

  • 摘要: 本文通过扫描电子显微镜及能谱分析（SEM-EDS）技术对净水厂污泥（WTPS）和煅烧改性净水厂污泥（C-WTPS）进行表征，运用吸附动力学和吸附等温模型研究了WTPS和C-WTPS的磷吸附特征，比较了WTPS和C-WTPS的氨氮和总有机碳释放量，分析了C-WTPS对磷的固定形态，结果表明，与WTPS相比，C-WTPS表面出现大量的裂层，碳和氮元素的质量百分含量分别减少5.52%、1.36%，铁和铝元素的质量百分含量分别增加2.3%、0.54%.C-WTPS对磷的吸附符合拟二级动力学模型，说明其对磷的吸附主要受化学作用控制.Langmuir和Freundlich等温吸附模型都能较好描述C-WTPS的磷吸附过程，Langmuir拟合参数表明C-WTPS的理论饱和磷吸附量为3.34 mg·g-1，是WTPS的1.6倍.WTPS中无机磷（IP）多于有机磷（OP），煅烧改性使得WTPS中的OP存在向IP转化的趋势.C-WTPS吸附的磷主要以非磷灰石无机磷（NAIP）的形态存在，说明C-WTPS中的铁、铝元素在磷吸附过程中发挥了重要的作用.与WTPS比较，C-WTPS的氨氮和有机物释放风险显著减少.因此，C-WTPS是一种更优良的除磷材料.
    Abstract: Appearance and components of water treatment plant sludge (WTPS) and calcined water treatment plant sludge (C-WTPS) were characterized by scanning electron microscope and energy dispersive spectrometry(SEM-EDS). Phosphorus adsorption characteristics of WTPS and C-WTPS were investigated through adsorption kinetics and adsorption isotherm tests. The release amount of ammonia nitrogen and total organic carbon of WTPS and C-WTPS was compared. The forms of adsorbed phosphorus in C-WTPS were analyzed. The results showed that, compared with WTPS, a large number of cracks appeared on the surface of C-WTPS. The mass percentage of carbon and nitrogen on the surface of C-WTPS decreased by 5.52% and 1.36% respectively, and the mass percentage of iron and aluminium on the surface of C-WTPS increased by 2.3% and 0.54% respectively. The results of kinetic experiment showed that the adsorption process of phosphorus on C-WTPS followed the pseudo-second-order model, which indicates that the adsorptes of phosphorus is mainly controlled by chemical action. The Langmuir and Freundlich equation could describe well the phosphorus adsorption process of C-WTPS. The Langmuir equation data indicated that the P saturation adsorption capacity of C-WTPS was 3.34 mg·g-1, which was 1.6 times that of WTPS. There was more inorganic phosphorus (IP) than organic phosphorus (OP) on WTPS, but the calcination converted OP in WTPS to IP. Fractionation of the phosphorus indicated that adsorbed phosphorus in C-WTPS existed in mostly non apatite inorganic phosphorus (NAIP), indicating that iron and aluminum on the C-WTPS played an important role in the process of phosphorus adsorption. The risk of ammonia nitrogen and organic matter release for C-WTPS is much lower than that of WTPS. Therefore, C-WTPS is a better material for phosphorus removal.
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  • 收稿日期:  2018-03-02
  • 刊出日期:  2019-02-15
刘啟迪, 周真明, 张红忠, 费霞丽, 谢保金, 李书文, 苑宝玲. 煅烧改性净水厂污泥的除磷特性[J]. 环境化学, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
引用本文: 刘啟迪, 周真明, 张红忠, 费霞丽, 谢保金, 李书文, 苑宝玲. 煅烧改性净水厂污泥的除磷特性[J]. 环境化学, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
shu
LIU Qidi, ZHOU Zhenming, ZHANG Hongzhong, FEI Xiali, XIE Baojin, LI Shuwen, YUAN Baoling. Phosphorus removal characteristics of calcined water treatment plant sludge[J]. Environmental Chemistry, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
Citation: LIU Qidi, ZHOU Zhenming, ZHANG Hongzhong, FEI Xiali, XIE Baojin, LI Shuwen, YUAN Baoling. Phosphorus removal characteristics of calcined water treatment plant sludge[J]. Environmental Chemistry, 2019, 38(2): 325-333. doi: 10.7524/j.issn.0254-6108.2018030203
shu

煅烧改性净水厂污泥的除磷特性

  • 1.  华侨大学土木工程学院, 厦门, 361021;
  • 2.  泉州市自来水有限公司, 泉州, 362000;
  • 3.  厦门水务集团有限公司, 厦门, 361008;
  • 4.  厦门水务中环制水有限公司制水三部, 厦门, 361000
  • 收稿日期:  2018-03-02
基金项目:

福建省高校产学合作重大项目（2018Y4101），国家自然科学基金（51678255，51578250），福建省自然科学基金（2017J01096），泉州市高层次人才创新创业项目（2017Z025）和华侨大学中青年教师科研提升资助计划（ZQN-PY313）资助

摘要: 本文通过扫描电子显微镜及能谱分析（SEM-EDS）技术对净水厂污泥（WTPS）和煅烧改性净水厂污泥（C-WTPS）进行表征，运用吸附动力学和吸附等温模型研究了WTPS和C-WTPS的磷吸附特征，比较了WTPS和C-WTPS的氨氮和总有机碳释放量，分析了C-WTPS对磷的固定形态，结果表明，与WTPS相比，C-WTPS表面出现大量的裂层，碳和氮元素的质量百分含量分别减少5.52%、1.36%，铁和铝元素的质量百分含量分别增加2.3%、0.54%.C-WTPS对磷的吸附符合拟二级动力学模型，说明其对磷的吸附主要受化学作用控制.Langmuir和Freundlich等温吸附模型都能较好描述C-WTPS的磷吸附过程，Langmuir拟合参数表明C-WTPS的理论饱和磷吸附量为3.34 mg·g-1，是WTPS的1.6倍.WTPS中无机磷（IP）多于有机磷（OP），煅烧改性使得WTPS中的OP存在向IP转化的趋势.C-WTPS吸附的磷主要以非磷灰石无机磷（NAIP）的形态存在，说明C-WTPS中的铁、铝元素在磷吸附过程中发挥了重要的作用.与WTPS比较，C-WTPS的氨氮和有机物释放风险显著减少.因此，C-WTPS是一种更优良的除磷材料.

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