含银聚合铝的净水与消毒效果

<正> 聚合氯化铝起始于日本,我国于60年代中、末期也先后合成该药,并引入阴离子如SO_4~(--)、PO_4~(---),或阳离子Fe~(+++)、Mg~(++),以提高净水效果。由于该药不能杀菌,我们将有杀菌作用的阳离子Ag(原料系硝酸银)引入我所研制的71型净水剂聚氯化铝中,成为“含银聚合铝”,使其有对饮水净化和消毒的双重作用。

THE WATER PURIFICATION AND DISINFECTION EFFECTS OF SILVER-CONTAINING POLYMERIC ALUMINIUM

Silver-containing polymeric aluminium has both purification and disinfection effects on water. It was proved in experiment that the water of Yangtze River (turbidity>100, E. coli index>10~6) would come up to the national standard of potable water (turbidity<5℃, E. cold index<3) after addition of the compound 150 mg/L, followed by stirring for 1 min and standing for 4 min. The amount of silver in the water was 0.046～0.050 mg/L.The advantages of treatment of water with silver-containing polymeric aluminium are:1. Purification and disinfection can he fulfilled at the same time.2. The compound is stable and no deterioration was found during storage for half a year.3. The time required for disinfection is short and the water would becomepotable 4 min after treatment.4. The silver content of the purified and disinfected water is below the safety limit and is nontoxic to man.