吉林11选五走势图 www.rqwn.net 水的硬度怎么区分？
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.
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.