The difference between ultrapure water filter and pure water filter

The difference between ultrapure water equipment and pure water equipment

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The ultra-pure water filter adopts pretreatment, reverse osmosis technology, ultra-purification treatment and post-treatment methods to almost completely remove the conductive medium in the water, and remove the non-dissociated colloidal substances, gases and organic matter in the water to a very low level water filter equipment.

Pure water filter , it uses mainly reverse osmosis membrane technology. Its working principle is to apply a certain pressure to the water, so that water molecules and ionic mineral elements pass through the reverse osmosis membrane, and most of the inorganic salts (including heavy metals), organic matter, bacteria, and viruses dissolved in the water are impenetrable. Pass the reverse osmosis membrane, so that the permeated pure water and the impermeable concentrated water are strictly separated; the pore size on the reverse osmosis membrane is only 0.0001 microns, while the diameter of the virus is generally 0.02-0.4 microns, and the diameter of ordinary bacteria is 0.4 -1 micron.

The difference between ultrapure water equipment and pure water equipment

01.

Different uses

Purpose of ultrapure water filter equipment:

1. Production and cleaning of ultrapure materials and ultrapure 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.

Purpose of pure water filter equipment:

1. Chemical water treatment in power plants
2. Ultrapure water in the electronics, semiconductor, and precision machinery industries
3. Preparation of food, beverages and drinking water
4. Small pure water station, drinking pure water for groups
5. Water for fine chemicals and sophisticated subjects
6. Preparation of high-purity water required by other industries
7. Process water in the pharmaceutical industry
8. Desalination of sea water and brackish water

 

02.

Different conductivity of water

1. The effluent quality of ultrapure water: resistivity>15MΩ.cm
The water quality of ultrapure water is divided into five industry standards, namely 18MΩ.cm, 15MΩ.cm, 10MΩ.cm, 2MΩ.cm, and 0.5MΩ.cm to distinguish different water quality.


2. Pure water: 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).

03.

Different processes are used between equipment

Different processes are used between water filter equipment
(1) The technological process of ultrapure water filter 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 → polished mixed bed → precision filter → water object (≥18MΩ.CM) (traditional Craft).

2. Pretreatment → reverse osmosis → intermediate water tank → water pump → EDI device → purified water tank → pure water pump → ultraviolet sterilizer → polished mixed bed → 0.2 or 0.5 μm precision filter → water object (≥18MΩ.CM) (the latest technology) .

3. Pretreatment→first-stage reverse osmosis→dosing machine (PH adjustment)→intermediate water tank→second-stage reverse osmosis (positive charge reverse osmosis membrane)→pure water tank→pure water pump→EDI device→ultraviolet sterilizer→0.2 or 0.5μm precision filter → water object (≥17MΩ.CM) (the latest technology).

4. Pretreatment → reverse osmosis → intermediate water tank → water pump → EDI device → pure water tank → pure water pump → ultraviolet sterilizer → 0.2 or 0.5 μm precision filter → water object (≥15MΩ.CM) (the latest technology).

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

(2) The technological process of pure water filter equipment is:


1. Adopt ion exchange method

Raw water → raw water pressure pump → multi-media filter → activated carbon filter → water softener → precision filter → cation resin filter bed → anion resin filter bed → anion and yang resin mixed bed → microporous filter → water point

2. Adopt two-stage reverse osmosis method

Raw water → raw water pressure pump → multi-media filter → activated carbon filter → water softener → precision filter → first-stage reverse osmosis → PH adjustment → intermediate water tank → second-stage reverse osmosis (the surface of the reverse osmosis membrane is positively charged) → Purified water tank → pure water pump → microporous filter → water point

3. Adopt EDI method

Raw water → raw water pressurizing pump → multi-media filter → activated carbon filter → water softener → precision filter → first-stage reverse osmosis machine → intermediate water tank → intermediate water pump → EDI system → microporous filter → water point

please click here to know more about water filter for ultrapure water and pure water.

John Lau.

John Lau.

John Lau, a project manager holding an engineering bachelor's degree, became fascinated with optimizing beverage production equipment during his university days. As an overseas project manager, he firmly believes that educating clients on achieving efficient workflows through customized equipment design is one of the most impactful aspects of his job.

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