化工进展2017，Vol.36Issue(z1)：512-517,6.DOI:10.16085/j.issn.1000-6613.2017-0444
复合二氧化氯及其氯酸盐消毒副产物产生机理及影响因素
Study on the mechanism and influencing factors of compound chlorine dioxide and its chlorate disinfection by-products
闫云涛 1毛岩鹏1
作者信息
- 1. 山东大学能源与动力工程学院燃煤污染物减排国家工程实验室,山东 济南250061
- 折叠
摘要
Abstract
This paper studies the reaction between NaClO3 and hydrochloric acid and investigates the effects of reaction temperature and reaction time on the compound chlorine dioxide and its chlorate disinfection byproducts. Findings:The compound chlorine dioxide produced through the reaction of NaClO3 and hydrochloric acid does not produce chlorate in the process of disinfection of drinking water. The running water that is disinfected by the use of compound chlorine dioxide is detected to have chlorate disinfection by-products which are derived from the NaClO3 that misses complete reaction in the reaction residual liquid. The residual amount of incompletely reacted NaClO3 is the main factor affecting the chlorate content in disinfectant water,which decreases with the increase of reaction temperature or lengthening of the reaction time. The reaction residue enters the water body with ClO2 and Cl2. When the concentration of available chlorine was 2mg/L,the reaction temperature was 20℃ and the reaction time was 10min,the content of NaClO3 in the disinfectant water was higher than 0.7mg/L of the national standard. When the reaction temperature was 20℃,and the reaction time was 30min and above,or the reaction temperature was 30℃ and above,the content of NaClO3 in the disinfectant water was lower than 0.7mg/L of the national standard. When the reaction temperature was 90℃,and the reaction time was 70min,the content of NaClO3 in the disinfectant water was the lowest,that was 0.019 mg/L.关键词
复合二氧化氯/有效氯/消毒副产物/氯酸盐Key words
compound chlorine dioxide/available chlorine/disinfection by-product/chlorate分类
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闫云涛,毛岩鹏..复合二氧化氯及其氯酸盐消毒副产物产生机理及影响因素[J].化工进展,2017,36(z1):512-517,6.
