工业水处理 ›› 2023, Vol. 43 ›› Issue (9): 43-50. doi: 10.19965/j.cnki.iwt.2022-0612

• 专论与综述 • 上一篇    下一篇

光催化去除水中天然有机物的研究进展

王震1,2(), 郑晓环1,2(), 袁翼1, 朱凯1, 魏杨2, 许莉3, 许高平3   

  1. 1. 南昌市城市规划设计研究总院集团有限公司,江西 南昌 330038
    2. 华东交通大学土木建筑学院,江西 南昌 330013
    3. 江西省水务水科学检测研发有限公司,江西 景德镇 330095
  • 收稿日期:2023-07-14 出版日期:2023-09-20 发布日期:2023-09-25
  • 作者简介:

    王震(1992— ),硕士,工程师,注册设备工程师,注册环保工程师。电话:18397914930,E-mail:

    郑晓环。E-mail:

  • 基金资助:
    2020年南昌市第二批科技计划项目(2020-NCGCZX-005); 江西省自然科学基金重点项目(20212ACB204003); 江西省科技厅项目(20192BCD40013); 江西省水利厅科技项目(202123YBKT27)

Progress of photocatalysis for the removal of natural organic matter from water

Zhen WANG1,2(), Xiaohuan ZHENG1,2(), Yi YUAN1, Kai ZHU1, Yang WEI2, Li XU3, Gaoping XU3   

  1. 1. Nanchang Urban Planning & Design Institute Group Co. , Ltd. , Nanchang 330038, China
    2. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China
    3. JiangXi Water Science Detecting and Researching Co. , Ltd. , Jingdezhen 330095, China
  • Received:2023-07-14 Online:2023-09-20 Published:2023-09-25

摘要:

天然有机物(NOM)是动植物在自然循环过程中经腐烂分解所产生的大分子有机物。NOM是消毒副产物(DBPs)的前驱体,其在饮用水加氯消毒过程中会反应形成具有“三致”危害的消毒副产物。光催化剂在光照射条件下,可以不添加任何杂质而起到氧化作用,对NOM的去除具有彻底、稳定、不产生二次污染等优势。介绍了NOM的主要危害,对比分析了不同光催化剂催化氧化NOM的去除机理和优缺点,归纳总结了多种光催化复合工艺去除NOM的联用机制。光催化技术对水源中以腐殖酸(HA)为主的NOM具有较好的去除效果,以TiO2为主的半导体光催化剂存在太阳能利用率低、光催化所需时间长、粉末催化剂难以分离回收等问题,在实际应用中局限性较大。针对这些问题,在今后的研究中应加强对高效环保经济型复合光催化剂材料的研究。应根据不同水体的实际情况,充分利用各种水处理技术的优势,进一步优化光催化氧化技术与其他水处理技术协同作用体系,提高去除污染物的效率。

关键词: 天然有机物, 光催化, 改性, 复合工艺

Abstract:

Natural organic matter(NOM) is the macromolecular organic matter produced by decomposition of plants and animals during natural circulation. NOM is the precursor of disinfection byproducts(DBPs),which can form disinfecting by-products with three hazards in the process of chlorination Disinfection in drinking water. Photocatalyst can act as an oxidizer without adding any impurities under light irradiation conditions with the advantage of being complete,stable and no secondary pollution for the removal of NOM. This paper introduced the main hazards of natural organic matter (NOM),contrasted and analyzed the removal mechanisms,advantages and disadvantages of different photocatalysts for catalytic oxidation of NOM,and summarized the coupling mechanisms of various photocatalytic composite processes for NOM removal. Photocatalytic technology has a good effect on the removal of HA-based natural organic matter from water sources. TiO2-based semiconductor photocatalysts had problems such as low solar energy utilization,long time required for photocatalysis,and difficulty in separating and recycling powder catalysts,thus limited its practical application. In view of these problems,the research on efficient,environmentally friendly and economical composite photocatalyst materials should be strengthened in future research. And according to the actual situation of different water bodies,the advantages of various water treatment technologies should be fully utilized to further optimize the synergistic system of photocatalytic oxidation technology and other water treatment technologies to improve the efficiency of pollutant removal.

Key words: natural organic matter, photocatalysis, modification, composite technology

中图分类号: