Ceramic Filtration Technolog, Ceramic Water FilterSilver and Carbon – Natural Water Purification TechnologiesUltraviolet in Water Purification

Reverse Osmosis Water Filter

Reverse osmosis water purification is an effective method to receive high quality water. The main part of the reverse osmosis water filter is a semi-permeable membrane that has microscopic holes in it. The water under pressure is forced through the membrane. The holes are big enough to let the water through but small enough to trap the molecules larger than water molecules. From time to time care should be taken of the condition of the membrane as it wears out over time. Some reverse osmosis water filters are equipped with automatic membrane flushing systems that remove substance from the membrane and prolong its life.

Reverse osmosis water purification is widely used for drinking water filtration. Water pressure and the level of water contamination influence the effectiveness of the reverse osmosis water filter. The RO (reverse osmosis) water filter is successful in removal dissolved solids and suspended substances from water. Among the elements that reverse osmosis water purification system deals with are nitrates, sulfates, sodium, etc.

Combined with other water filters Reverse osmosis water filters remove pesticides, dioxins and volatile organic compounds (chloroform, petrochemicals and others).

Those who use the reverse osmosis water filter face several disadvantages. One of the main points is that reverse osmosis water purification technology implies the use of a great amount of water. Only about 15% of initial water is purified, the rest is considered to be waste water. Waste water gets to the house drain and water discharged during reverse osmosis will give additional work to the house septic system.

The reverse osmosis water filter consists of several units. The first part is the prefilter that function as a sediment filter. It eliminates suspended particles and therefore relieves the task of the membrane and prolongs the membrane’s life. If chlorine is present in the water a carbon water filter may be added.

The reverse osmosis membrane is mainly maid of cellulose acetate or polyamide resins. Choosing the type of the membrane it’s important to take into consideration the type of the contaminants and their concentration, the rate of water supply and the rejection rate (the amount of contaminants (%) to be eliminated by the membrane).
The water pressure should be adjusted to the needs of the reverse osmosis filter.

As the process of water purification using reverse osmosis technology is quite slow. Thereby storage tanks are provided to storage the purified water.

An additional carbon filter used as a post-filter may be used to remove bad taste or missed organic elements.