水厂二氧化氯及游离余氯的衰减规律及投加控制研究

Attenuation Law and Dosing Control of Chlorine Dioxide and Free Chlorine in Water Plant

本文分析二氧化氯/游离余氯的消耗机理衰减规律以及其衰减对管网水消毒效果的影响,以更好地控制游离余氯及二氧化氯的投量,保证安全优质供水的同时,实现节能降耗的目的。结果表明二氧化氯及游离余氯的衰减速率与其反应时间及初始浓度有关。出厂水中,当二氧化氯与水充分混合反应5 h内,其衰减速率与其初始浓度成正比,即浓度越高,衰减速率越快。管网水中,当二氧化氯与水混合充分反应超过5h,其衰减速率与初始浓度成反比,即浓度越高,衰减速率越慢。

The project analyzes the law of attenuation of the consumption mechanism of chlorine dioxide/free residual chlorine and the effect of its attenuation on pipe network water disinfection, so as to better control the amount of free residual chlorine and chlorine dioxide, and to ensure safe and high-quality water supply while realizing The purpose of energy saving.The results showed that the decay rate of chlorine dioxide and free residual chlorine was related to its reaction time and initial concentration.1、In the factory water, when the chlorine dioxide and water are fully mixed and reacted for 5 hours, the decay rate is proportional to the initial concentration, that is, the higher the concentration, the faster the decay rate.2、In the pipe network water, when chlorine dioxide and water are mixed for more than 5 hours, the decay rate is inversely proportional to the initial concentration, that is, the higher the concentration, the slower he decay rate.