What is the classification of purified water?

2025-09-03 16:23:10

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In different situations, the type of water is different, and the water quality is also significantly different. Water Purifier

Groundwater and surface water

Groundwater - less contaminated by organisms and microorganisms, while calcium and magnesium plasma have higher solubility and hardness, making it easy to form scale; In some cases, iron/manganese/fluoride ions exceed the standard and cannot meet the demand for productive household water.

Surface water is more contaminated by organic matter and microorganisms than groundwater. If the area belongs to a limestone region, its surface water usually has higher hardness, such as in Deyang, Mianyang, Guangyuan, and Aba areas of Sichuan Province.

2 Hard Water and Soft Water

Solid water - The total concentration of metal ions such as calcium and magnesium in water is called hardness. Hard water has a significant impact on production water such as boilers and must be soft/desalinated. A hardness exceeding 200 milligrams per liter is commonly referred to as hard water.

Soft water is water with lower hardness.

3 Pure and Pure Water

Primary water - usually refers to water from wastewater treatment plants, such as urban conventional tap water (internationally known as drinking water)/suburban groundwater/outdoor surface water, etc. D.， Water quality is usually measured by TDS value (total solids content in dissolved water), and the TDS value of tap water in Chinese cities is generally between 100-400ppm.

Purified water - Raw water purified in wastewater treatment plants is called purified water.

Pure water and distilled water

Purified water - After passing through a complete set of water treatment equipment such as anti-seepage and sterilization devices, raw water can be directly extracted from purified water to remove inorganic salt ions, microorganisms, and organic impurities from the raw water.

Distilled water - Purified water prepared by distillation is usually not used for drinking.

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