What types of water are there?

I’ve found the requirements for classifying the quality of water intended for drinking purposes. I’m not sure if this will be helpful.

**Categories:** Grade 1, Grade 2, Grade 3

**Sensory properties and general chemical indicators:**
- Color (degree): 15; no other unusual colors allowed. 20, 30
- Turbidity (degree): 3; in special cases, not more than 5. 10, 20
- Visible particles: Not allowed at all. Not allowed at all. Not allowed at all.
- pH: 6.5–8.5, 6–9, 6–9
- Total hardness (in ml/L, as calcium carbonate): 450, 550, 700
- Iron (ml/L): 0.3, 0.5, 1.0
- Manganese (ml/L): 0.1, 0.3, 0.5
- Chlorides (ml/L): 250, 300, 450
- Sulfates (ml/L): 250, 300, 400
- Total dissolved solids (ml/L): 1000, 1500, 2000

**Toxicological indicators:**
- Fluorides (ml/L): 1.0, 1.2, 1.5
- Arsenic (ml/L): 0.05, 0.05, 0.05
- Mercury (ml/L): 0.001, 0.001, 0.001
- Cadmium (ml/L): 0.01, 0.01, 0.01
- Chromium (hexavalent) (ml/L): 0.05, 0.05, 0.05
- Lead (ml/L): 0.05, 0.05, 0.05
- Nitrates (ml/L, as nitrogen): 20, 20, 20

**Bacteriological indicators:**
- Total bacteria count (per ml): 100, 200, 500 (after 30 minutes of contact)
- Residual chlorine (ml/L): Not less than 0.3 for water leaving the treatment plant; not less than 0.3 for water at the point of use. Not less than 0.05 for both.

① Grade 1: Expected values； Level 2: Allowable value ； Level 3: Relaxation of limits when no other alternative water sources are available.

Thank you, 2nd floor. It seems there are many types of water in the industrial sector as well. . . . :lol

Pure water classification: 1. Softened water – removes calcium and magnesium ions. 2. Deionized water: The residual salt content in deionized water should generally be between 1–5 mg/L, with a conductivity of 1–10 μS/cm at 25°C. 3. Pure water (ion-free water): The residual salt content should generally be below 1 mg/L, with a conductivity of 0.1–1 μS/cm at 25°C. 4. Ultra-pure water: The residual salt content should generally be below 0.1 mg/L, with a conductivity of less than 0.1 μS/cm at 25°C

This seems to be used when setting conditions for HVAC systems, hehe! In fact, there are only a few types of water that we use

Commonly used in factories are fresh water, recycled water, deionized water (softened water), deoxygenated water, and reclaimed water.

Industrially treated pure water can be classified as follows: 1. Softened water, which removes calcium and magnesium ions. 2. Desalinated water: The residual salt content in desalinated water should generally be between 1–5 mg/L, with a conductivity at 25°C of 1–10 μS/cm. 3. Pure water (ion-free water): The residual salt content should generally be below 1 mg/L, with a conductivity at 25°C of 0.1–1 μS/cm. 4. Ultra-pure water: The residual salt content should generally be below 0.1 mg/L, with a conductivity at 25°C of less than 0.1 μS/cm. Commonly used in industry include: fresh water (from sources outside the plant or from underground; groundwater is often referred to as raw water), recycled water (water that is reused within the plant), treated water (water that has been processed industrially as mentioned above), deoxygenated water, reclaimed water, concentrated water (waste water resulting from reverse osmosis), and various types of waste water discharged from the plant

The answer on the 2nd floor was correct; I learned a lot from it.

Chemical plants generally have three types of water: soft water (used for generating steam). Circulating water (coolant). Potable water (for washing hands, eyes, etc.)

12th floor; your answer is limited in this case. The water requirements in various chemical industries such as daily chemicals, fine chemicals, and biochemicals are quite complex!

http://bbs.hcbbs.com/thread-74709-1-1.html Take a look at his; I haven’t downloaded it

Chilled water, circulating water, process water, primary water

Your answer is exactly what I wanted to know. Thank you so much, friend

Soft water, deionized water, pure water (ion-free water), ultra-pure water ； Circulating water, condensate water, process water…… Different types of water are classified into different categories

The water used in chemical engineering projects is generally classified into: cooling water, chilled (salt) water, condensate water, steam water, heated water for insulation, pure water, fire-fighting water, domestic water, factory rainwater, production wastewater, and domestic wastewater.