Difference between Ultrapure water equipment and pure water equipment

Pure water equipment mainly uses reverse osmosis membrane technology. Its working principle is to exert certain pressure on water to make water molecules and ionic mineral elements pass through the reverse osmosis membrane, while most of the inorganic salts (including heavy metals), organic substances, bacteria, viruses, etc. dissolved in water cannot pass through the reverse osmosis membrane, so that the permeated pure water and the permeated concentrated water can be strictly separated; The pore size on the reverse osmosis membrane is only 0.0001 micrometers, while the diameter of viruses is generally 0.02-0.4 micrometers, and the diameter of ordinary bacteria is 0.4-1 micrometers.

1、 Different uses

（1） Use of Ultrapure water equipment:

1. Production and cleaning of ultrapure materials and reagents.

2. Production and cleaning of electronic products.

3. Production of battery products.

4. Production and cleaning of semiconductor products.

5. Production and cleaning of circuit boards.

6. Production of other high-tech fine products.

（2） The purpose of pure water equipment:

1. Chemical water treatment in power plants

2. Ultrapure water for electronics, semiconductor and precision machinery industries

3. Preparation of food, beverages, and drinking water

4. Small pure water station, group drinking pure water

5. Water for fine chemical engineering and advanced disciplines

6. High purity water preparation required by other industries

7. Pharmaceutical Industry Process Water

8. Desalination of seawater and brackish water

2、 The conductivity of water varies

1. Outlet water quality of Ultrapure water: resistivity>15M Ω. cm Ultrapure water quality is divided into five industry standards, namely 18M Ω. cm, 15M Ω. cm, 10M Ω. cm, 2M Ω. cm, 0.5M Ω. cm, to distinguish different water quality.

2. Pure water is divided into industrial pure water and drinking pure water. Industrial pure water: at 25 degrees Celsius, 1. Ordinary pure water: EC=1-10us/cm; 2. High purity water: EC=0.1~1.0us/cm; 3. Ultrapure water: EC=0.1~0.055; Drinking pure water: EC=1-10 us/cm (national standard).

3、 The process flow used between various equipment is different

（1） The process flow of Ultrapure water equipment is:

1. Pretreatment system → reverse osmosis system → intermediate water tank → coarse mixed bed → fine mixed bed → pure water tank → pure water pump → ultraviolet sterilizer → polishing mixed bed → precision filter → water object (≥ 18M Ω. CM) (traditional process).

2. Pretreatment → reverse osmosis → intermediate water tank → water pump → EDI device → purified water tank → pure water pump → ultraviolet sterilizer → polishing mixed bed → 0.2 or 0.5 μ M precision filter → water object (≥ 18M Ω. CM) (new process).

3. Pretreatment → First stage reverse osmosis → Dosing machine (pH regulation) → Intermediate water tank → Second stage reverse osmosis (positively charged reverse osmosis membrane) → Pure water tank → Pure water pump → EDI device → UV sterilizer → 0.2 or 0.5 μ M precision filter → water object (≥ 17M Ω. CM) (new process).

4. Pretreatment → reverse osmosis → intermediate water tank → water pump → EDI device → pure water tank → pure water pump → ultraviolet sterilizer → 0.2 or 0.5 μ M precision filter → water object (≥ 15M Ω. CM) (new process).

5. Pretreatment system → reverse osmosis system → intermediate water tank → pure water pump → coarse mixing bed → fine mixing bed → ultraviolet sterilizer → precision filter → water object (≥ 15M Ω. CM) (traditional process).

（2） The process flow of pure water equipment is:

1. Adopting ion exchange method

Raw water → Raw water booster pump → Multi medium filter → Activated carbon filter → Water softener → Precision filter → Cation resin filter bed → Anion resin filter bed → Anion and cation resin mixed bed → Microporous filter → Water point

2. Adopting two-stage reverse osmosis method

Raw water → Raw water booster pump → Multi medium filter → Activated carbon filter → Water softener → Precision filter → First stage reverse osmosis → pH regulation → Intermediate water tank → Second stage reverse osmosis (reverse osmosis membrane surface with positive charge) → Purified water tank → Pure water pump → Microporous filter → Water consumption point

3. Adopting EDI method

Raw water → Raw water booster pump → Multi medium filter → Activated carbon filter → Water softener → Precision filter → Primary reverse osmosis machine → Intermediate water tank → Intermediate water pump → EDI system → Microporous filter → Water consumption point

The above is the difference between Ultrapure water equipment and pure water equipment brought by Hongjie Water. I hope it can help you!