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水的硬度怎么區分?山西水處理設備

時間:2014年05月25日信息來源:本站原創 點擊:收藏此文 【字體:

水的硬度怎么區分? 
   水的硬度分為碳酸鹽硬度和非碳酸鹽硬度兩種。 
   碳酸鹽硬度 
   主要是由鈣、鎂的碳酸氫鹽[Ca(HCO3)2、Mg(HCO3)2]所形成的硬度,還有少量的碳酸鹽硬度。碳酸氫鹽硬度經加熱之后分解成沉淀物從水中除去,故亦稱為暫時硬度。 
   非碳酸鹽硬度 
   主要是由鈣鎂的硫酸鹽、氯化物和硝酸鹽等鹽類所形成的硬度。這類硬度不能用加熱分解的方法除去,故也稱為永久硬度,如CaSO4、MgSO4、CaCL2、MgCL2、Ca(NO3)2、Mg(NO3)2等。 
   碳酸鹽硬度和非碳酸鹽硬度之和稱為總硬度。 
   水中Ca2+的含量稱為鈣硬度。 
   水中Mg2+的含量稱為鎂硬度。 
   當水的總硬度小于總堿度時,它們之差,稱為負硬度。 

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 編輯:admin)
文章熱詞:山西水處理設備
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