RO (Reverse Osmosis) membrane is one of strong effective waste water treatment, it can remove 95% salt( such as calcium、magnesium…etc), heavy metal, chemical matter. RO (Reverse Osmosis) are widely applied in purify sea water, electrical pure water extraction, biochemical medicine, kidney wash, cosmeceuticals stores, beverages, bottle water and so on, which means Reverse Osmosis water purification system is fairly mature in technology.

To settle Sparse Liquid (ex: fresh water) and Dense Liquid (ex: sea water) with same cubit feet amount and block with semi-limpid membrane in the middle, the outcome – Sparse Liquid will flow into the membrane toward Dense liquid. On the side of Dense Liquid, the amount will larger than the side of sparse liquid, because of the infiltration balance.

If put a larger pressure to press the infiltration pressure, Dense Liquid will flow toward Sparse Liquid, and this action we call it – reverse osmosis wash. Reverse Osmosis wash method will happens when semi-limpid membrane catch unwanted substances while the pressure interlace between dense liquid and sparse liquid.
 

Home Reverse Osmosis System
RO Systems is a Home Drinking Water System that uses the principle of reverse osmosis to remove 95-99% of all the mineral and chemical contaminants from raw tap water. Our commodities can give you the quality of bottled water with the convenience of a faucet mounted on your kitchen sink.


The way Reverse Osmosis differ from a Water Filter 
Ordinary water filters use a screen to separate only particles of dirt sediment from water. Reverse osmosis employs a semipermeable membrane that removes not only particles but also an extremely high percentage of dissolved contaminants-molecule by molecule- from raw tap water.


Osmosis 
Assume a membrane is semipermeable, allowing water to pass through while being closed to dissolved salts. Place a membrane between two compartments in a container as shown in the figure to the right. Then place a salt solution in one half of the container and pure water in the other half. Now a fundamental scientific principle comes into play. That is, two different concentrations of liquids within the same system will try to reach equilibrium (i.e. the same concentration of contaminants) on both sides of the membrane. Of course the only way for this to happen is for pure water to pass through the membrane to the salt water side in an attempt to reach equilibrium is called OSMOSIS.


Reverse Osmosis 
Reverse Osmosis is the reversal of the natural flow of osmosis. In a water purification system, the goal is not to dilute the salt solution, but to separate the pure water from the salt and other contaminants. When the natural osmotic flow is reversed, water from the salt solution is forced through the membrane in the opposite direction by application of pressure-thus the term REVERSE OSMOSIS. Through this process, we are able to produce pure water by screening out the salts and other contaminants. 


The actual process of  R.O. System 
The raw tap water first flows through a 5 micron particle FILTER
[1.] to remove dirt, rust and other sediment. The water then flows into a carbon briquette cartridge FILTER
[2.] which takes out 98% of the chlorine and organic chemicals. The next stage of the process is FILTER
[3.] 1 micron sediment filter or the block carbon filter to filter multi-chemical compounds and suspension.
[4.] The reverse osmosis membrane which will separate 95-99% of the dissolved contaminants from the water molecules. The contaminants are then washed down the drain. The next stage of the PUREPRO RO SYSTEMS process is the small CARBON FILTER
[5.] removes the remaining traces of chemicals, tastes and odors. The R.O. water is stored in a 3.2 gallons TANK
[6.] Inside the tank is a balloon-like rubber diaphragm, pre-charged with 8-10 psi of air. As the tank fills, the air pressure increases and pushes the water out when the faucet is opened. The final element of the system is a POLISHED CHROME FAUCET 
[7.] It is installed on the kitchen counter or the sink. It is a dual action faucet offering intermittent flow (to fill a glass, hold the handle down) or continuous flow (to fill a coffee pot, lift the handle up). 


Reverse Osmosis get start 
Although the idea of reversing osmosis has been known for over 10 years, the practical application is a recent development. In 1962 the U.S Government funded the first R.O. plant which processed 1000 gallons clean water per day. Today, there are more than 3000 large R.O. treatment plants, each producing more than a million gallons of drinking water each day. In 1991, the U.S. Army bought 8,000 large membranes to their mobile water purification units for troops in Desert Storm. In 1993, the U.S. Government bought another 6,300 large membranes to purify flood water in the Midwest.


R.O. remove - Bacteria & Cryptosporidium 
An R.O. membrane has a pore size much smaller than bacteria virus, pyrogen or the cryptosporidium parasite. When functioning properly it will remove all microorganisms from tap water and produce sterile water.


The factors affect the quantity and the quality of the water produced
There are four major variables to consider: 
[1.] PRESSURE. The greater the water pressure, the better the quantity and quality of the water produced. Water pressure of 60 psi ideal. However one booster pump can make sure the water pressure.
[2.]TEMPERATURE. 76*F is the ideal water temperature for R.O. 40*F water will cause the production of R.O. water to fall to half of that at 76*F. The maximum water temperature recommended is 85*F.
[3.]TOTAL DISSOLVED SOLIDS (TDS). The higher the amount of dissolved contaminants in the water, the lower the quantity of water produced. A high level of TOTAL DISSOLVED SOLIDS can be overcome with additional water pressure.
[4.] MEMBRANE. Different membranes have different characteristics. Some produce more water than others; some have better contaminant rejection capabilities; some have greater resistance to chemical abrasion for longer life. We have membranes combine the best of these characteristics and are considered the finest membrane in the world. 


The RO system production
Under ideal conditions, it depends on the membrane gallon of RO system; for example, the 80G RO membrane is rated at 80gallons of production per day (80gpd at 80~100psi). Under the average conditions, the consumer can expect 70-95 gallons of product water per day. But that's still a lot of water for the average household's drinking and cooking requirements. 
  

The guarantee of TRIWIN water System  
The Triwin System (excluding filters) is guaranteed for 1 years for material. The membrane has a one year pro-rated guarantee.