Technology | Cleansui

Advanced water treatment technology

Mitsubishi Chemical Cleansui Corporation

Water treatment is an urgent need worldwide which requires advanced technologies using filter membranes.
In 1970, Mitsubishi Chemical Cleansui Corporation is the first corporation in the world to develop the hollow fiber membrane technology. From a superfine polyethylene material, super thin filtration fibers were created. The inside of fibers was processed using high technology by roundly heating at high temperatures and prolonging the filament winding process without using the solvent, ensuring the safety and the cleanliness of drinking water after filtered. The hollow fiber membrane features perforated tubes with tiny holes, and water goes through the sidewall of the tubes with size ranging from 0.01 to 0.1 micrometers.

STRONG FILTERING CAPABILITIES

The sidewalls of hollow fiber membrane can remove the minute particles up to 0.01 micrometers in tap water.

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THE DIFFERENCES BETWEEN WITH AND WITHOUT HOLLOW FIBER MEMBRANE

Before

After

Before filtering

After filtering

Only activated carbon

With hollow fiber membrane

1Before filtering

2After filtering

MESH STRUCTURE

Movement of water through the hollow fiber membrane filter. Impurities are filtered inside of these fibers.

TECHNOLOGY:

HOLLOW FIBER MEMBRANE

REMOVAL OF CRYPTOSPORIDIUM

Cryptosporidium size is about 4 to 5 microns. By penetrating the digestive tract, it can cause fever, acute diarrhea, etc. The disinfection using chlorine at waterworks can not eliminate this bacterium.

ELIMINATION OF RED RUST

STRONG FILTERING CAPABILITIES

The sidewalls of hollow fiber membrane can remove the minute particles up to 0.01 micrometers in tap water.

Enlarge

THE DIFFERENCES BETWEEN WITH AND WITHOUT HOLLOW FIBER MEMBRANE

Pre-filtered

After filtering

Before use

After using

Use only activated carbon

Together with the hollow fiber filter

Pre-filtered

After filtering

TECHNOLOGY:

HOLLOW FIBER MEMBRANE

MESH STRUCTURE

Movement of water through the hollow fiber membrane filter. Impurities are filtered inside of these fibers.

REMOVAL OF CRYPTOSPORIDIUM

ELIMINATION OF RED RUST

CROSS- SECTION DIAGRAM OF THE MEMBRANE

This figure shows a cross-section diagram of the membrane. The outer surface of the hollow fibers is at right, and the inner surface, at left. In the actual filtration scheme, the water would flow from the outer to the inner surface, as indicated by the arrow. Bacteria and other microparticles are unable to pass through the interstices in the slit-like membrane microstructures. They will be trapped on the outer surface and layers close to it, and so will be unable to enter the membrane.