论文部分内容阅读
自发现饮用水中含过量氟对人体有不良影响以来,已提出了许多除氟的方法,其中活性氧化铝是一种有效的方法。但对活性氧化铝的有效吸附容量却不清楚。即使在美国1936年提出的活性氧化铝专利中,除阐明pH值在5.0～6.5的范围里,可达到最好的处理效果外,也没有谈及它的吸附容量问题。1958年有人在试验室中得到,pH值在5.6时,它的吸附容量可达7800克/米~3,同时得出出水中的氟化钠却增加了。最近有人
Since the discovery that drinking water contains excessive amounts of fluorine has adverse effects on the human body, many methods for removing fluorine have been proposed, of which activated alumina is an effective method. However, the effective adsorption capacity of activated alumina is not clear. Even in the activated alumina patent filed in the United States in 1936, in addition to clarifying that the pH value is in the range of 5.0 to 6.5, the best treatment effect can be achieved, and there is no mention of its adsorption capacity. In 1958 it was obtained in a laboratory. At a pH of 5.6, its adsorption capacity reached 7800 g/m3, and it was found that sodium fluoride in water increased. Recently someone