水的硬度怎么区分?山西水处理设备

时间:2014年05月25日信息来源:本站原创 点击:收藏此文 【字体:

水的硬度怎么区分? 
   水的硬度分为碳酸盐硬度和非碳酸盐硬度两种。 
   碳酸盐硬度 
   主要是由钙、镁的碳酸氢盐[Ca(HCO3)2、Mg(HCO3)2]所形成的硬度,还有少量的碳酸盐硬度。碳酸氢盐硬度经加热之后分解成沉淀物从水中除去,故亦称为暂时硬度。 
   非碳酸盐硬度 
   主要是由钙镁的硫酸盐、氯化物和硝酸盐等盐类所形成的硬度。这类硬度不能用加热分解的方法除去,故也称为永久硬度,如CaSO4、MgSO4、CaCL2、MgCL2、Ca(NO3)2、Mg(NO3)2等。 
   碳酸盐硬度和非碳酸盐硬度之和称为总硬度。 
   水中Ca2+的含量称为钙硬度。 
   水中Mg2+的含量称为镁硬度。 
   当水的总硬度小于总碱度时,它们之差,称为负硬度。 

How to distinguish the hardness of the water? Shenyang water treatment equipment - shenyang direct drinking equipment - shenyang water equipment - shenyang demineralized water equipment

 

How to distinguish the hardness of the water?
Water hardness is divided into carbonate hardness and the carbonate hardness two kinds.
Carbonate hardness
Is mainly composed of calcium and magnesium bicarbonate [Ca (HCO3) 2, Mg (HCO3 formed) 2], and hardness
Small amounts of carbonate hardness. The heat decomposition bicarbonate hardness to remove sediment from water, also called temporarily。
The carbonate hardness
Is mainly composed of calcium magnesium sulfate, chloride and nitrate as the hardness of the form salts. This kind of hardness cannot use the decomposition of the heating method, also known as permanent removal, such as hardness, CaCL2, MgSO4 CaSO4, MgCL2, Ca (NO3) 2, Mg (NO3) 2, etc.
The hardness and the carbonate carbonate sum total hardness as hardness.
Ca2 + water content of calcium, hardness is called.
Mg2 water content of magnesium hardness + called.
When water is less than the total hardness, they always basicity, called negative hardness.

(作者:佚名 编辑:admin)
文章热词:山西水处理设备
延伸阅读:

最新文章

推荐文章

热门文章