本文目录一览:
- 1、水除氟什么作用
- 2、除氟是什么意思
- 3、水烧开能除水中的氟吗?
水除氟什么作用
为了人们的健康,生活饮用水是需要除氟的,氟及氟化物都是有毒物质,高氟区居民长期饮用高氟水,会出现牙齿和骨骼氟中毒。因发病有明显的地区性,这类氟中毒被称为地方性氟中毒。
除氟设备由除氟罐、滤料、再生装置、管路阀门等组成,根据不同的氟含量和处理水量,可选择不同大小的设备。除氟器的大小依据水量而定,根据用途不同可选用钢制或玻璃钢。清洗后可用除氟水进行冲洗,时间8~10min.,当原水PH值大于7时,一般用二氧化碳气体进行调节。
水的注意事项和重点须知:
建议早晨之一位拧开水龙头的人一定要把这些不新鲜的水“放过”!大约满一脸盆左右,用来打扫卫生或冲厕所用倒是不算浪费了。此外煮沸后放置超过24小时以上的白开水也不适合饮用,需果断放弃。在高原地区,由于气压较低,水的沸点都达不到100度,但是还是有80多度的。
而且高原紫外线较强,大部分地区细菌含量不是很高,所以水只要煮沸了也是能够安全饮用的。汤水如果可以就不要反复加热了,热过一次还没吃完也是可以倒掉的。水中有不明杂质、变色、异味等状况时,也应该果断放弃饮用。
以上内容参考:百度百科——自来水
除氟是什么意思
水处理除氟、除砷活性氧化铝球,本品用作高氟水的除氟剂,是一种具有巨大比表面积的分子吸附剂。当原水的PH值和碱度较低时,除氟容量较高,大于3.0mg/g,价格比合成树脂低,还可用于饮水除砷。
水烧开能除水中的氟吗?
水烧开可以去除水中的氟。溶解在水中的氟分子非常活跃,在加热之后,可以使得水中的氟迅速游离、蒸发。
去除饮水中氟的 *** :
1、化学法:化学处理 *** 又包括混凝沉淀法和钙盐沉淀法等。混凝沉淀法除氟的原理为:当混凝剂溶于水时,会迅速水解,生成的不溶沉淀物将氟离子吸附,共同沉淀从而去除水中的氟离子。当前应用较广的混凝剂主要是铝盐(明矾、氯化铝、 *** 铝、聚合氯化铝)。
2、吸附法:用于除氟的常用吸附剂主要有活性氧化铝、活化沸石、活性氧化镁、骨炭等,近年来还报道了氟吸附容量较高的羟基磷石灰、氧化锆树脂等。利用这些吸附剂可将氟浓度为10mg/L的含氟水处理到1.0mg/L以下,达到饮用水标准。
3、离子交换法:离子交换法主要采用离子交换树脂、矿化烟煤、锯屑等,利用离子交换作用达到除氟的目的。
常用的除氟树脂有氨基膦酸树脂、聚酰胺树脂、阳离子交换树脂、阴离子交换树脂等。吸附饱和后可用再生剂再生、反复使用。
拓展资料:
水中含有的氟化物对人体有着一定的危害:
1、氟化氢对人体的危害比二氧化硫要大20倍,当空气中氟化物的含量超过lmg/m3时,就会对人的眼睛、皮肤和呼吸器官产生直接危害;
2、氟化物对于人体的危害,主要还是氟化物会使骨骼受害,主要表现为肢体活动障碍,氟化物中毒的重者骨质会出现疏散或变形,容易发生自发性骨折。
3、氟化物会使人的牙齿变得脆弱,而且还会出现斑点、损害皮肤,出现疼痛、湿疹及各种皮炎。
4、氟化物对于人体的呼吸器官有着十分强烈的 *** 作用,会引起鼻炎、气管炎,使肺部纤维组织增生疾病。
5、氟化物对皮肤、粘膜有强烈的局部 *** 作用。可引起难以愈合的皮肤溃疡、急性支气管炎、肺水肿及肺出血。过量的氟化物被食入,可引起胃溃疡,甚至胃出血而致死。氟化物与胃酸结合生成氟氢酸后,可腐蚀消化道粘膜。
除氟
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