What Do I Need to Know About Reverse Osmosis (RO Water)

What you need to know to use it correctly. Why we need to know the quality of the inlet water. The parts that makeup it and their possible breakdowns.

To not repeat or count the same with other words, I refer you to this page: Useful tips on reverse osmosis. In it, you can find the most important thing for its use, and some tips. At the entrance care and maintenance of the mosses, we complete the information with the essential accessories and the care of the equipment.


The quality of the inlet water.

This is the most important issue to know which osmosis equipment we need to install and how to take care of your membrane.

The biggest enemies of the membrane (other than chlorine) are in order of importance; micro sediments in suspension and the content of dissolved minerals. These are directly related to water conductivity or TDS (total dissolved solids), a critical water parameter. In the above links, you can know everything you need about this indication of water purity.

Once known and as long as it does not exceed approximately 500 ppm, any standard equipment can be valid for us. If this figure is exceeded or water that drags micro sediments, equipment with an accessory may be required. We can also modify our equipment.

These modifications are basically two. First, the installation in the equipment of a washing or flushing valve (if the equipment does not have it). The second would be to mount pretreated inlet water (see the link, pretreated to purifiers).


The components of the music team.

The first three stages.

They are responsible for the preparation of water so as not to harm the membrane. The first is a 5-micron polypropylene filter to remove solid impurities. The second contains a carbon-activated grain cartridge responsible for removing much of the chlorine carried by the water and some chemicals and organic substances. The third carries another activated carbon cartridge, this time in bulk. This cartridge finishes removing chlorine that could pass through the previous stage, purifying further, while retaining any particles that could reach it.


The osmosis membrane.

Except in special teams is the fourth stage of a moss team. Built of polyamide, they are semi-permeable and have pores of 0.0001 microns, which practically only allow pure water to pass through. Eliminating by a maximum percentage of 98% any element that carries the water in dissolution.

To avoid the most technical part, I will not explain the osmotic pressure, which is the principle of membrane functioning. Just comment that you basically need the pressure to accomplish your mission. For this reason, the more salts dissolved in the water, the higher the pressure you need to make the separation. 

This membrane is housed inside a housing (membrane holder), having the water inlet into the lid. At the other end, there are 2 outlets, one centered by which the osmotic water comes out, and the other more lateral that expels the reject water.


The anti-reverse valve.

Prevents the return of purified water to the membrane. It acts in the face of a lack of inlet pressure when the equipment is in production.


The restrictor.

The mission of this small element is to restrict the outlet of water through the reject duct. This reduction in water flow is measured to increase the pressure inside the membrane holder, on the side of the water to be purified. Without this increased pressure, the membrane does not act.


The four-way valve.

It is responsible for preventing the passage of water into the membrane when the tank is filled by equalizing the pressures.

If this valve does not work by fault as it does not cut, the passage to the membrane would always be leaving water through the reject drain, causing a great consumption of water that can give us an upset in the bill.


The pressurized tank.

As an inheritance of the invention of these systems by the Americans, the capacity of the same is measured in gallons (1 US gal-3.78 liters).

We all know what a deposit is, just explaining the meaning of pressurized and why. These tanks are internally loaded with pressurized air (+-0.5 kg/cm2). Water accumulates inside a membrane or bag, which is under pressure inside the reservoir. Without that pressure, the water inside would not be able to leave the reservoir.

When the tank is full, and the water does not come out, it may be due to two reasons; lack of air pressure in the tank, which is solved by charging with air. Or when the membrane that retains the water has been broken. In the event of a breakdown of this membrane, the tank must be replaced in most cases.


The coconut charcoal filter post.

This small, large filter is responsible for finishing fine-tuning the taste of the water. For the properties of coconut charcoal that in small granules is inside, it eliminates any strange flavor. This refining of water makes it very sweet and pleasant to drink.


The faucet.

On this component, just comment that low-cost equipment equips lever faucets, which are the worst on the market. A good faucet should be like a mono drive, with its ceramic shut-off valve. In the taps of your home, you no longer have old taps to close by shoe, nor do you mount a lever for your osmosis.

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I am tech writer who is passionate about technology and spearheads the core writing team on tech news

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