高锰酸钾及高铁酸钾预氧化及Al_(13)对低温低浊水的混凝效果  

Effect of Pre-Oxidation with KMnO_4& KFeO_4 and Coagulation with Al_(13) for Water Treatment in Low Temperature and Turbidity

作　　者：齐敦哲 余磊 肖寒[2] 徐慧[2] 

机构地区：[1]宁夏宁东水务有限责任公司,宁夏银川640100 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085

出　　处：《净水技术》2014年第2期65-70,共6页Water Purification Technology

摘　　要：针对宁夏宁东水厂冬季低温低浊水处理困难的问题,研究了高锰酸钾和高铁酸钾预氧化对混凝效果的影响以及提纯Al13在处理低温低浊水时的优势。结果表明在PAC投加量一定的情况下,高铁酸钾和高锰酸钾先于PAC投加对浊度和UV254的去除效果最好,其次是同时投加,最次是二者后于PAC投加;高锰酸钾和高铁酸钾都有最优的投加量,投加量过多或者过少都会对混凝效果产生影响;pH对高锰酸钾和高铁酸钾预氧化具有重要的影响,酸性条件下高锰酸钾和高铁酸钾的预氧化效果较好;提纯的Al13在处理低温低浊水时混凝沉后水浊度较常规混凝剂有明显的降低(1 NTU以下)。Ningdong Water Plant is faced to treat water with low temperature and low turbidity. Experiments were carried out and results were achieved as follows ： （ 1 ） The best removal efficiency of turbidity and UV2s4 was obtained with adding KMnO4 and KFeO4 followed by adding PAC, removal efficiency by simultaneous addition of 3 reagents was the next, the worst removal efficiency of turbidity and UV4 was obtained with adding PAC followed by adding 2 potassium salts; （2） There was an optimal dosage of these 2 potassium salts; （3） Pre-oxidation was better under acidic condition; （4） Purified Al13 could significantly decrease turbidity after sedimentation.

关 键 词：低温低浊 预氧化 PH AL13 

分 类 号：TU991[建筑科学—市政工程]