摘要
以次氯酸钠为氧化剂，对质量浓度为200 mg／L的氨氮模拟废水进行处理。研究了有效氯与氨氮的摩尔比n（Cl2／NH3-N）、反应时间、pH值、温度对氨氮去除效果的影响。结果表明，较适宜的反应条件为：n（Cl2／NH3-N）为1．7，反应时间30 min，pH值7～9，温度15～25℃。同时研究了加入次氯酸钠后的氧化还原电位（ORP），表明可通过ORP的变化为运行控制提供依据。
Sodium hypochlorite was used as an oxidant to treat the simulated ammonia-nitrogen wastewater with ammonia-nitrogen concentration of 200 mg/L.The effects of molar ratio of chlorine to ammonia-nitro-gen,reaction time,pH value and temperature on the removal efficiency of ammonia-nitrogen were studied. The results showed that the suitable reaction parameters are：molar ratio of chlorine to ammonia-nitrogen 1.7,reaction time 30 min,pH 7～9 and temperature 15～25 ℃.The effect of dosage of NaClO on ORP was also studied for the control of the dosage in site .
出处
《应用化工》
CAS
CSCD
北大核心
2015年第4期602-604,610,共4页
Applied Chemical Industry
基金
国家自然科学基金(51174238)
关键词
次氯酸钠
氨氮废水
折点氯化
ORP
sodium hypochlorite
ammonia-nitrogen wastewater
breakpoint chlorination
ORP
