用沸石去除饮用水中氨的研究

Removal of ammonia from drinking water by clinoptilolite

系统地研究了天然沸石去除饮用水中低浓度氨的工艺参数 ,包括沸石的粒径大小、水流流速、初始氨浓度和pH等对处理效果的影响 ;对再生液中钠离子浓度、pH及其再生液流速对沸石再生的影响进行了研究 .结果表明 ,该种天然沸石不仅能很好地去除水中微量氨离子 ,而且还能被有效地重复再生 ;经重复使用和再生 1 8次 ,其氨交换容量仅降低了 4 % .因此 ,该天然沸石用于去除水中微量氨 。

The removal of low concentration ammonia from drinking water was studied by using the clinoptilolite packed in a column reactor. The drinking water containing low concentration ammonia passes through the reactor. The effects of several operating variables such as particle size of clinoptilolite, loading rate, initial ammonia concentration and pH value on the ion exchange capacity and the effects of sodium ion concentration, pH value and flow rate of regenerating solution on the clinoptilolite regeneration were described. The ion exchange capacity decreases 4% for loading and regenerating 18 times.