净水用次氯酸钠溶液的稳定性

Stability of Sodium Hypochlorite Solution in Water Purification

研究含碱量、有效氯初始浓度及储存方式对次氯酸钠溶液稳定性的影响。含碱量越低,次氯酸钠溶液稳定性越差;有效氯初始浓度越高,次氯酸钠溶液稳定性越差;存放在室内的PE桶储存次氯酸钠溶液不影响其稳定性。同时,结合饮用水消毒特点,提出了次氯酸钠溶液含碱量要求,及水厂次氯酸钠溶液消毒的使用有效氯浓度、存储能力和使用周期。

Effects of alkalinity, available chlorine initial concentration and storage on the stability of sodium hypochlorite solution were reported. Lower alkalinity level and higher initial available chlorine concentration decreased the stability of sodium hypochlorite solution. The indoor PE barrels for storage did not affect the stability of sodium hypochlorite solution. Furthermore, combined with drinking water disinfection patterns, some reasonable advice on alkali content, initial available chlorine concentration,storage capacity and use cycle of sodium hypochlorite solution for disinfection in drinking water treatment plants was given.