光催化氧化去除水源水低浓度有机物的应用研究进展

doi:10.16085/j.issn.1000-6613.2017-0766

摘要/Abstract

摘要： 目前对光催化氧化去除工业废水高浓度难降解有机物（如染料）进行了大量研究，但就其去除水源水中低浓度有机污染物的研究较少。本文回顾了光催化氧化技术的发展过程，介绍了光催化氧化的作用原理，简要分析了光催化剂及改性研究的主要方向。认为低浓度有机污染物的难生化降解及成分结构更复杂，对饮水安全造成极大影响，将其分为天然有机污染物（主要为腐殖质）和人工合成有机污染物（包括农药、抗生素等）两大类，并分别来阐述光催化氧化去除两大水源水中低浓度有机污染物的研究及应用。光催化氧化对这类污染物能够有效去除，且能改善其生化降解性，并已成为去除水源水有机物较有前途的方法，为后续生物处理提供条件。本文也提出了其存在的一些问题：粉末状光催化剂难以回收利用，其对光的利用范围窄，对有机物的降解多为对某一类物质单独进行的研究，水中的离子对其影响等，并提出仍需进一步开展研究的方向。

关键词: 催化, 二氧化钛, 催化剂, 低浓度有机污染物, 降解

Abstract: At present, a great deal of researches have been done on photocatalytic oxidation for the removal of highly concentrated and refractory organic compounds (such as dyes) in industrial wastewater, but few studies have been conducted on the application of low concentration organic pollutants in source water. In this paper, the development of photocatalytic oxidation technology is reviewed. The principle of photocatalytic oxidation is introduced, and the main directions of photocatalyst and modification researches are briefly analyzed. It is pointed out that low concentration organic pollutants are difficult to be degraded biochemically, and the structure is more complex, which has a great influence on the safety of drinking water. The low concentration organic pollutants can be divided into natural organic pollutants (mainly humus) and synthetic organic pollutants (including pesticides, antibiotics, etc.) to illustrate the research on how to remove these pollutants in water by photocatalytic oxidation, which shows that low concentration of organic pollutants in water can be removed effectively, and can also improve the biochemical degradation. So this kind of water has become a promising method for the removal of organic matter, and can provide conditions for subsequent biological treatment. We put forward some questions, such as the powder photocatalyst can not be recovered, the utilization range of light is narrow,the degradation of organic matter is mostly a study of substances alone,and the influence of ions in water and so on. The directions for further research are also proposed.

Key words: catalysis, titanium dioxide, catalyst, low concentration organic pollutants, degradation

中图分类号:

TQ426.8

杨凌肖, 王琼, 刘治君, 李乃稳. 光催化氧化去除水源水低浓度有机物的应用研究进展[J]. 化工进展, 2017, 36(S1): 469-475.

YANG Lingxiao, WANG Qiong, LIU Zhijun, Li Naiwen. Application of photocatalytic oxidation for removal of low concentration organic matter in source water[J]. Chemical Industry and Engineering Progress, 2017, 36(S1): 469-475.

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