UK. What is Reverse Osmosis?

Desalination is a method of converting non-drinking hard or sweetened water to drinking.

This is done by removing the salts from the water. It is mainly applied to seaside areas.

When water is hard, sweetened, it has pesticides, hexavalent chromium, high concentration in nitrates and nitrite, needs special treatment.
ClearWater ‘s method of desalting water is called Reverse Osmosis. Depending on the quality and quantity of water required to clean each time, and also on the information contained in its recommendation, ClearWater ‘s scientific partner will propose to each one the appropriate system for his own unique case.

Let’s look at some terms that are necessary to understand how the αντιστροφη οσμωση  works.

Salts:
Salts are among the most common chemical compounds. They have similarities with common salt (sodium chloride) such as solubility and taste. Many salts are necessary for the body to function because they contain essential minerals.
Metals such as calcium, magnesium, potassium, sodium, and iron make the body of our body capable of performing very basic functions while their lack of body makes the body look and feel tired.
However, there are also harmful to the organism salts such as e.g. nitrate salts that are poisons.

Osmosis:
In general, osmosis is a process in which, when two solutions of different density are communicated through a semi-permeable membrane (where it can pass only in one direction the liquid) as in the diagram, the solvent (water) passes through the less to the densest solution.
Thus, the denser becomes thinner until it equals. This method can be used to equilibrate two solutions of different density to leave solvent substances from the weaker to the denser with the final result and the two solutions to have the same density at the end.

Reverse Osmosis:
When too much pressure is applied to the bulk solution (salt solution), the osmosis effect is reversed – the solvent (water) moves from the densest to the lightest solution.
From the film, almost pure water (H2O) comes out, which we use. The part of the solution with high salt concentration (denser) is discharged into the drain.
In this way, brackish or hard water is converted into drinking
The water is processed before it enters the membrane so it does not destroy it, as well as after it passes through the membrane to make it drinkable. Reverse Osmosis is called for RO by Reversed Osmosis.

Desalination can be used for other uses besides making the water drinkable.

For example:
• Devices using water to avoid damaging salts (dental machines, coffee machines, washing machines, ice machines, etc.)

  • In aquariums
  • Steam irons
  • On diets low in sodium
  • Weight loss diets
  • In coffee and tea
  • In cleaning solutions
  • In body care
  • On car wipers
  • In the radiator
  • In industrial units

For any use you need, or suspect you need a reverse osmosis system, call ClearWater and ask for your own case. The technically trained staff will be happy to inform you of the solution that is right for you.

Reverse osmosis device.
This device can remove all salts and micro-organisms from the water. This removal is achieved by special filters – membranes with a very small pore diameter. The public is also known as the desalination plant.

It is used in the following cases of waters with:

(a) increased seawater content

(coastal, island regions)

(b) high nitrate ions

(areas with extensive agriculture)

(c) increased concentration of toxic metals

(eg hexavalent chromium, arsenic, etc.).

This is the most advanced form of water treatment available to date and which has wide application, but with two main disadvantages:

  1. a) Reverse osmosis performance depends on the original water.

That is, if the original water has 5% sea, reverse osmosis produces 80% pure water and 20% water with a much higher percentage of water (waste).

If the original water has 50% sea, then 15% pure water and 85% water – waste are produced.

  1. b) Removes from water all the salts, including those necessary in the human body (eg calcium). This problem is usually solved by a controlled by-pass parallel flow line.

Initial installation costs and operating costs depend on the quality of the original water and the expected consumption and are clearly higher than all other water treatment methods.

Due to the complexity of the appliance, proper operation and maintenance are required on a regular basis by specialist vendor staff.

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