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城镇污泥磷回收制备电池级磷酸铁研究进展

郜佳琪,  华煜,  陈淑娴,  李彦,  袁彬彬,  戴晓虎

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文章导航 > 环境工程  > 2025 >  43(9): 198-208
郜佳琪, 华煜, 陈淑娴, 李彦, 袁彬彬, 戴晓虎. 城镇污泥磷回收制备电池级磷酸铁研究进展[J]. 环境工程, 2025, 43(9): 198-208. doi: 10.13205/j.hjgc.202509020
引用本文: 郜佳琪, 华煜, 陈淑娴, 李彦, 袁彬彬, 戴晓虎. 城镇污泥磷回收制备电池级磷酸铁研究进展[J]. 环境工程, 2025, 43(9): 198-208. doi: 10.13205/j.hjgc.202509020
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GAO Jiaqi, HUA Yu, CHEN Shuxian, LI Yan, YUAN Binbin, DAI Xiaohu. A review on preparation of battery-grade iron phosphate precursor from sludge phosphorus recovery[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(9): 198-208. doi: 10.13205/j.hjgc.202509020
Citation: GAO Jiaqi, HUA Yu, CHEN Shuxian, LI Yan, YUAN Binbin, DAI Xiaohu. A review on preparation of battery-grade iron phosphate precursor from sludge phosphorus recovery[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(9): 198-208. doi: 10.13205/j.hjgc.202509020
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城镇污泥磷回收制备电池级磷酸铁研究进展

doi: 10.13205/j.hjgc.202509020

  • 1. 同济大学 环境科学与工程学院, 上海 200092;

  • 2. 城市污染控制国家工程研究中心, 上海 200092;

  • 3. 上海中耀环保实业陕西有限公司, 陕西 宝鸡 721000

基金项目: 

国家自然科学基金（52131002，52200172）；水污染控制与资源绿色循环全国重点实验室开放课题（PCRRF25001）

详细信息
    作者简介:

    郜佳琪（1998—），女，博士研究生，主要研究方向为污泥焚烧灰分磷资源回收。2210222@tongji.edu.cn

    通讯作者:

    华煜（1995—），男，助理教授，主要研究方向为有机固废高值资源化。1351530@tongji.edu.cn

    戴晓虎（1962—），男，教授，主要研究方向为有机固体废弃物全链条低碳处理与资源利用。daixiaohu@tongji.edu.cn

A review on preparation of battery-grade iron phosphate precursor from sludge phosphorus recovery

  • 1. School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;

  • 2. National Engineering Research Center for Urban Pollution Control, Shanghai 200092, China;

  • 3. Shanghai Zhongyao Environmental Protection Industry Shaanxi Co., Ltd., Baoji 721000, China

    摘要
  • 摘要: 污泥资源化是实现城市生态环境减污降碳与资源循环利用的关键路径。污泥作为“城市磷矿”，富集了污水中90%以上的磷元素，是替代战略磷矿资源，制备高附加值磷酸盐产品的重要来源。该文系统综述了从污泥中回收磷制备电池级磷酸铁的技术路线与研究进展。首先分析了污泥中磷的赋存形态及其与磷矿石的差异，指出污泥磷具有来源稳定和放射性风险小的优势；分析比较了生物法、湿化学法、电化学法和热化学法等污泥磷释放技术的机制、效率与应用潜力；在此基础上，探讨了离子交换、膜分离等纯化工艺在提升磷源纯度方面的作用，以及不同来源污泥（活性污泥、化学污泥、混合污泥与焚烧灰分）制备电池级磷酸铁的具体路径及其可行性；最后，从综合效益与未来发展方面对该资源化路径进行展望，提出可通过工艺耦合、杂质定向调控与全生命周期评价相结合，推动污泥磷回收制备电池级磷酸铁技术的规模化与产业化应用，为污泥高值化利用提供新思路。
    Abstract: The resource recovery of sewage sludge represents a key strategy for China to achieve both pollution reduction and carbon mitigation， as well as the circular utilization of resources. Serving as an “urban phosphorus mine，” sludge accumulates over 90% of the phosphorus present in wastewater， making it an important alternative source for the production of high-value-added phosphate products. This review systematically summarizes the technological routes and research progress for recovering phosphorus from sludge to produce battery-grade iron phosphate. First， the occurrence forms of phosphorus in sludge and their differences from phosphate ores are analyzed， highlighting the advantages of sludge-derived phosphorus in terms of source stability and lower radiological risk. Subsequently， the mechanisms， efficiency， and application potential of phosphorus release technologies—including biological， hydrometallurgical， electrochemical， and thermochemical methods—are compared. On this basis， the roles of purification processes such as ion exchange and membrane separation in enhancing phosphorus purity are discussed， along with the feasibility and specific pathways for producing battery-grade iron phosphate from different sludge sources （activated sludge， chemical sludge， mixed sludge， and incineration ash）. Finally， the comprehensive benefits and future development directions of this resource recovery route are examined. It is proposed that process integration， targeted impurity control， and full life-cycle assessment can facilitate the scale-up and industrial application of sludge-derived phosphorus recovery for battery-grade iron phosphate， offering new strategies for the high-value utilization of sewage sludge.
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