工业水处理 ›› 2023, Vol. 43 ›› Issue (12): 46-51. doi: 10.19965/j.cnki.iwt.2022-0963

• 专论与综述 • 上一篇    下一篇

建筑废弃物在污水处理领域的研究与应用

雷铭1(), 韩运1, 李文凯1(), 王雷2, 郑天龙3, 李鹏宇3, 连依明1   

  1. 1. 陕西建工第十二建设集团有限公司,陕西 安康 725000
    2. 陕西建工(安康)新型建材有限公司,陕西 安康 725000
    3. 中国科学院生态环境研究中心,北京 100085
  • 收稿日期:2023-07-14 出版日期:2023-12-20 发布日期:2024-01-11
  • 作者简介:

    雷铭(1980— ),高级工程师。E-mail:

    李文凯,博士,工程师。E-mail:

  • 基金资助:
    陕西省住房城乡建设科技计划项目(2021-K46); 陕西省创新能力支撑计划项目(2022KJXX-14); 秦创原引用高层次创新创业人才项目(QCYRCXM-2022-73)

Research and application of construction waste in the field of sewage treatment

Ming LEI1(), Yun HAN1, Wenkai LI1(), Lei WANG2, Tianlong ZHENG3, Pengyu LI3, Yiming LIAN1   

  1. 1. SCEGC No. 12 Construction Engineering Group Co. ,Ltd. ,Ankang 725000,China
    2. Shaanxi Construction (Ankang) New Building Materials Co. ,Ltd. ,Ankang 725000,China
    3. Research Center for Eco- Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China
  • Received:2023-07-14 Online:2023-12-20 Published:2024-01-11

摘要:

建筑废弃物产量大,现有技术模式下资源化利用水平较低,应当寻求新的资源化利用途径。建筑废弃物可通过物理、化学和生物过程去除水体中的污染物,具备在污水处理领域进行资源化利用的潜力。综述了建筑废弃物的种类和性质,并根据其性质不同分为水泥基建筑废弃物和非水泥基建筑废弃物,其中水泥基建筑废弃物可利用水泥水化形成的氢氧化钙和钙矾石高效稳定地去除污水中的磷、氟、含氧酸盐与重金属离子,而非水泥基建筑废弃物则可作为填料与微生物、湿地植物等协同去除污水中的悬浮物、有机物与氮磷,对建筑废弃物在污水处理中的研究和应用进行了归纳总结,指出了相关研究在实际工程应用、处理成本及能耗、研究应用领域和机理机制研究方面的不足,并展望了建筑废弃物资源化利用未来的发展方向,以期加速已有技术工程验证、研发新处理技术、拓宽技术应用领域并深化微观机理研究。

关键词: 建筑废弃物, 污水处理, 钙矾石, 羟基磷灰石, 人工湿地

Abstract:

The production of construction waste is substantial,yet the current level of resource utilization within the existing technical model remains inadequate,necessitating the exploration of novel approaches to resource utilization. Construction waste possesses the potential for removing pollutants from water bodies through physical,chemical,and biological processes and can be effectively utilized in sewage treatment. The types and characteristics of construction wastes were summarized, and according to their different properties, they were categorized into cement-based and non-cement-based forms. Cement-based construction waste could efficiently and consistently eliminate phosphorus,fluorine,oxate,and heavy metal ions from wastewater by employing calcium hydroxide and ettringite generated during cement hydration. Conversely,non-cement-based construction waste could serve as a filler that collaboratively removed suspended matter,organic matter,nitrogen,and phosphorus in wastewater alongside microorganisms and wetland plants. It provided an overview of research on the application of construction waste in sewage treatment while highlighting deficiencies in practical engineering implementation,treatment cost optimization,energy consumption reduction measures as well as areas requiring further investigation such as research application fields and mechanism studies. Furthermore,future development directions for construction waste were proposed to expedite engineering validation of existing technologies,develop suitable treatment methodologies,expand technology applications and deepen microscopic mechanism investigations.

Key words: construction wastes, sewage treatment, ettringite, hydroxyapatite, constructed wetlands

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