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重金属对磷酸钙沉淀回收的影响及其沉积行为

邱林清 陈煜柠 胡泽昆 韦朝海 邱光磊

邱林清, 陈煜柠, 胡泽昆, 韦朝海, 邱光磊. 重金属对磷酸钙沉淀回收的影响及其沉积行为[J]. 环境工程, 2025, 43(3): 70-76. doi: 10.13205/j.hjgc.202503006
引用本文: 邱林清, 陈煜柠, 胡泽昆, 韦朝海, 邱光磊. 重金属对磷酸钙沉淀回收的影响及其沉积行为[J]. 环境工程, 2025, 43(3): 70-76. doi: 10.13205/j.hjgc.202503006
QIU Linqing, CHEN Yuning, HU Zekun, WEI Chaohai, QIU Guanglei. Effects of heavy metals on calcium phosphate precipitation and recovery and their deposition behaviors[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(3): 70-76. doi: 10.13205/j.hjgc.202503006
Citation: QIU Linqing, CHEN Yuning, HU Zekun, WEI Chaohai, QIU Guanglei. Effects of heavy metals on calcium phosphate precipitation and recovery and their deposition behaviors[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(3): 70-76. doi: 10.13205/j.hjgc.202503006

重金属对磷酸钙沉淀回收的影响及其沉积行为

doi: 10.13205/j.hjgc.202503006
基金项目: 

国家自然科学基金面上项目“k-策略聚磷菌的富集及其减碳除磷的物质代谢与调控机制研究”(52270035);广州市重点研发计划项目“城市污水处理系统减污降碳与污泥资源化循环利用关键技术研究”(2023B03J1334)

详细信息
    作者简介:

    邱林清(1988-),男,主要研究方向为水处理技术。404572630@qq.com

    通讯作者:

    邱光磊(1984-),男,教授、博士生导师,主要研究方向为水污染控制理论与技术。qiugl@scut.edu.cn

Effects of heavy metals on calcium phosphate precipitation and recovery and their deposition behaviors

  • 摘要: 磷酸钙沉淀法是一种主流的污水磷回收工艺。探讨了不同pH条件下,50~2000 μg/L的Cd(Ⅱ)、Pb(Ⅱ)和Cr(Ⅵ)对磷酸钙沉淀过程的影响,并探讨了上述重金属在磷酸钙沉淀过程中共沉淀行为及其对回收产物品质的影响。实验结果表明:重金属的存在对磷酸盐的沉淀和去除无显著影响,但会在一定程度上减少Ca2+的消耗(0.61%~6.26%)。其中,Cr(Ⅵ)由于水解会降低溶液pH,并与Ca2+结合形成CaCrO4微溶物,抑制磷酸钙或羟基磷酸钙的沉淀过程。XRD分析结果显示:在阳离子重金属(Cd(Ⅱ)和Pb(Ⅱ))共存条件下,磷回收产物中除了目标产物外还有磷酸镉和磷酸铅等杂质。杂质的形成不仅降低了磷回收产品的纯度,还可能对后续的资源化利用造成不利影响。研究结果为重金属共存条件下磷酸钙回收过程提供了新见解,揭示了不同类型重金属(阴/阳离子)对磷回收过程和回收产物的影响及机制。
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出版历程
  • 收稿日期:  2024-09-30
  • 录用日期:  2025-02-18
  • 修回日期:  2025-02-09
  • 网络出版日期:  2025-06-07
  • 刊出日期:  2025-03-01

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