折点加氯反应在次氯酸钠消毒中水中的应用  

Application of break point chlorination in sodium hypochlorite disinfection of reclaimed water

作　　者：李佳[1] 朱百泉[1] 祝明[1] 高原[2] 杨雅雯[3] 

机构地区：[1]中国肉类食品综合研究中心,北京100068 [2]北京市节约用水管理中心,北京100036 [3]北京市劳动保护科学研究所,北京100054

出　　处：《环境工程学报》2012年第11期4069-4073,共5页Chinese Journal of Environmental Engineering

基　　金：北京市2010水务财政专项资金类项目(PXM2010-035219-105486)

摘　　要：为研究中水消毒过程,对次氯酸钠消毒中水的折点加氯反应与消毒效果之间的关系进行研究。通过探讨加氯量位于折点曲线不同位置的消毒效果,分析接触时间和氨氮浓度的影响,得出了根据氨氮浓度确定的接触时间和加氯量公式。结果表明,氨氮浓度<2 mg/L时,将加氯量控制在折点之后接触反应30 min,氨氮浓度>2 mg/L时,将加氯量控制在峰点附近接触反应60 min均可实现中水消毒要求。The relationship of break point chlorination reaction and disinfection effects was studied to reveal process of reclaimed water disinfection using sodium hypochlorite as disinfectant.Contact time and chlorine dosage formulas according to ammonia nitrogen concentration were obtained through analyzing the relationship of positions of chlorine dosage on break point curve and corresponding disinfection effects,contact time and ammonia nitrogen concentration.The results showed that ensuring chlorine dosage enough to exceed that of break point with 30 minutes of contact time when ammonia nitrogen concentration was less than 2 mg/L,or chlorine dosage nearby that of peak point with 60 minutes of contact time when ammonia nitrogen concentration was more than 2 mg/L,both could achieve disinfection effects.

关 键 词：折点加氯 中水消毒 次氯酸钠 氨氮 接触时间 

分 类 号：X703[环境科学与工程—环境工程]