【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)。更多还原

【Abstract】 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 UV254was obtained with adding KMnO4and KFeO4 followed by adding PAC,removal efficiency by simultaneous addition of 3 reagents was the next,the worst removal efficiency of turbidity and UV254was 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 Al13could significantly decrease turbidity after sedimentation.更多还原