饮用水中胶体态污染物的研究进展
Research progress on colloidal pollutants in drinking water
黄建军 1张晓晴 1赵鹏 1田一梅 1赵伟高1
作者信息
- 1. 天津大学环境科学与工程学院,天津,300350
- 折叠
摘要
饮用水中的污染物经过迁移、吸附、团聚等行为,往往以胶体态形式存在,并作为载体吸附水中其他污染物,对饮用水质造成严重污染.聚焦于饮用水中的胶体态污染物,从胶体态污染物的概念、主要分类、迁移行为和去除效果4个方面,总结和阐述了近年来饮用水中胶体态污染物的研究进展.总结得出,饮用水中呈胶体态的无机物、有机物和微生物往往会与其他污染物吸附、团聚,可能引发胶体泵效应,影响污染物的迁移、富集和去除.在常规饮用水处理工艺中,混凝可有效去除＞10 μm的胶体态污染物,传统过滤不是去除胶体态污染物的主要工艺.臭氧氧化-活性炭吸附和膜分离等深度处理是去除＜10μm胶体态污染物的高效工艺.最后,基于研究现状对胶体态污染物的控制进行了展望,以期为保障饮用水质提供借鉴和帮助.
Abstract
After pollutants in drinking water have undergone migration,adsorption,agglomeration and other processes,they often exist in colloidal form,serving as carriers that adsorb other pollutants and seriously affecting drinking water quality.This review summarized the research progress on colloidal pollutants in drinking water in recent years,with a focus on their main classification,migration behavior and removal effect in drinking water treatment processes.It is concluded that colloidal inorganic matter,organic matter and microorganisms in drinking water are often adsorbed and aggregated with other pollutants,which may cause the colloid pump effect and affect the migration,enrichment and removal of pollutants.In conventional drinking water treatment processes,coagulation can effectively remove colloidal pollutants with particle sizes＞10 μm,while traditional filtration is not the main process for the removal of colloidal pollutants.Ozone oxidation-activated carbon adsorption and membrane separation are efficient processes for the removal of colloidal pollutants with particle sizes＜10 μm.Finally,based on the available research in this field,prospects were discussed for the effective control of colloidal pollutants,with the aim of providing guidance for the protection of drinking water quality.
关键词
胶体态污染物/饮用水/迁移/去除效果Key words
colloidal pollutants/drinking water/migration/removal effect引用本文复制引用
基金项目
南京大学污染控制与资源化研究国家重点实验室开放基金(PCRRF21038)
出版年
2024
NETL
NSTL
万方数据