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2021-10-16 10:22:37

Sea Water Purifier

Sea Water Purifier

What is the reason for using marine desalination systems (salt water) and reverse osmosis sea water purification method in industrial water purifiers? Why should we treat salt water at a very high cost when well water can be used? The question is, are these sources eternal? Answer No, as we have seen in previous years, the reduction of water resources in many parts of the country has been challenging.
Major scratches from the surface of the planet Earth are covered by water. However, about 97% of this water is salty and non-drinkable, and the remaining 3% is frozen and inedible at the poles and on top of mountains.
That is why nearly one-fifth of the world's population suffers from a shortage or lack of adequate drinking water, and it is predicted that in the coming decades more of the world's population will suffer from dehydration and its negative consequences.
Application of marine desalination
One of the options to deal with the water shortage crisis is to desalinate seawater and desalinate it, which of course is an expensive solution and requires a significant amount of energy, therefore, given the efforts of countries to reduce Energy consumption and the issue of global warming, continuing sea desalination projects using traditional and common methods, has little justification

However, the new initiative of two Canadian engineers in the field of desalination of seawater, which is very cost-effective in terms of energy consumption and also quite economical and cheap in terms of costs, gives a spark of hope in the hearts of fans of the idea of ​​using The desalinated water of the seas has created in the coming decades.
Researchers Ben Asparo and Joshua Zushi, researchers at Simon Frasso University in Wengu, have come up with a new idea for desalinating seawater, using salt instead of electricity to separate salt from seawater instead of electricity. Finally salt water desalination is used.

Asparo and Zushi have founded a company called Salt Work Technology. In the first step to test this new method, they dedicated a portion of the beach in Vancouver to their project, dividing it into three separate sections, and in each of them, they used a special method to desalinate the salt water of the seas.
In the first method, they heat the seawater and evaporate part of it, and then pressurize the steam produced (which, of course, requires a lot of electricity).
In the second method, the osmotic process is performed in reverse; In this way, using high pressure pumps, the saline water is sprayed on a special curtain that has very small holes, and as a result, the salt in the sea water is separated from the fresh water.
This method also requires the consumption of significant amounts of electricity. For example, 3.7 kilowatt hours of electricity are needed to desalinate a thousand liters of seawater and convert it to drinking water.
In the third method, which is the innovative and new method of Asparo and Zushi, more fresh water is produced using less energy. In this method, seawater is first poured into a shallow pool with a black floor. The blackness of the pool floor causes more heat to be absorbed by the sun and transferred to the water in the pool; And the concentration of salt in seawater increases from the initial 3.5% (normal) to more than 20%, without any electricity or any other energy other than free solar energy being used to evaporate the salt water. In the next step, this water is directed to a special area that contains untreated sea water. Conducted and transferred from there to the desalination unit.
What Asparo and Zushi have designed is a kind of natural electrical circuit in which, instead of carrying an electric current by electrons, charged atoms called ions are used to move the electric current. As a result, chemical interactions have occurred between waters with varying degrees of salt concentration.
To explain this phenomenon, we can say that salt is composed of two ions: one ion with a positive charge called "sodium" and the other ion with a negative charge called "chloride".
These two ions move in orbit in two opposite directions; And when four streams of water from four different pools (which have different degrees of salt concentration) are mixed, they reach their peak of chemical activity and interaction.
These four streams meet at a place called "poly ion ion bridges". Polyacetone has the property of separating positive and negative ions; In such a way that only one of the two ions of sodium or chloride can pass through it, at this time, another completely natural reaction occurs between the different streams of water entering this area, and that is, the transfer of salt from the water. The saltier ones turn to the less salty waters.
This natural reaction is amplified by the separation of sodium and chloride ions in the area of ​​ion bridges, and finally, fresh, unsalted water is obtained in a part of the circuit that can be closed. Conducted seals or pipes for water transfer or treatment (disinfection section).
In other words, Asparo and Zushi have been able to design (and better inspired) inspired by nature to design a system in which, after adding the salt concentration in a portion of the saline water entering the system, it In the vicinity of saline waters with lower concentrations and make the best use of the natural transfer of salt from saltier water to lower salt water, and this is done with They spend the least amount of electrical energy.
The more interesting point is that Asparo and Zushi have a comprehensive plan.

According to the set, this salt water treatment system can be used in both industrial and domestic scales.
The above was a description of the natural saline water treatment industrial system. In the home system, all the work steps in a device are done as big as an average refrigerator, and the only part of the work that requires energy consumption is the pumping of water into the system; Because the rest is done by nature itself, the sea and the sun.

How a seawater purifier works
The average salinity of ocean water is 35 parts per thousand. The approximate distribution of dissolved minerals is as follows: chloride, 55%; Sodium, 31%; Sulfate, 8%; Magnesium, 4%; Calcium, 1%; And potassium, 1%; Placing a microfiltration system as a precursor for reverse osmosis can reduce the amount of salt to 500 mg / l. Usually, the desalination process can produce 300 to 500 gallons of pure water per 1,000 gallons of seawater.