reverse osmosis ro plant
Categories: Reverse Osmosis


Aquaguard are the best Reverse Osmosis Ro Plant Provider in Pakistan. Aquaguard Reverse Osmosis  systems utilize the natural movement of molecules in a very liquid or gas known as diffusion to filter water and take away the various impurities and dissolved substances that it contains. By applying pressure over the force per unit area occurring between 2 liquids of various matter concentrations on either facet of a semi-permeable membrane, the movement of water molecules from the lower to the upper targeted answer is reversed. Water diffuses through the semi-permeable membrane and thereby the majority solutes area unit left behind.

Aquaguard offer a broad vary of filtration systems that use reverse diffusion technology to produce water for aquariums and fish tanks, land, field and park irrigation, beverage production and also the food and industry normally. Liquid Logic RO-Technology is extremely efficient and economical. reckoning on the feed water our systems area unit ready to take away up to ninety nine of impurities together with amphibious, arsenic, calcium, chloride, copper, fluoride, iron, lead, magnesium, nitrate/nitrite, pesticides, atomic number 11 and sulphate. so they’re our primary alternative once providing water filtration to our customers.

Aquaguard Ro Plants:


Reverse osmosis is a technology that separates the solvent from a concentrated solution by applying pressure. The solvent flows from the concentrated solution to the dilute solution through a semi-permeable membrane. In reverse osmosis, two flows are created: on the one hand, the practically pure solvent and, on the other hand, a solution that is even more concentrated than the original solution.

Residues from reverse osmosis membranes can be recovered in the process, simply discharged or treated with other concentration processes using evaporation and crystallization systems in order to achieve zero discharge.

It is an efficient, clean and compact technology that makes it possible to obtain high-quality water from brackish water and even seawater.It is also a great ally for treating waste water that needs to be reused. Technically more and more advanced membranes are used, with which reasonable permeate flow rates can be achieved at ever lower pressures.


Osmosis is a natural phenomenon that causes two solutions, one concentrated and one dilute, to equalize in concentration when separated by a semi-permeable membrane. In order to equalize the chemical potential on both sides of the membrane, there is a spontaneous flow of solvent across the membrane from the dilute to the concentrated solution. This flux is proportional to the difference in concentration and disappears when the concentrations are equal.

If slight pressure is applied to the more concentrated solution while there is osmotic flow across the membrane, the flow is reduced. And if the pressure exerted were greater, there would be a point where the flow would be zero.The exact pressure that stops flow is the osmotic pressure and depends on the type of solvent and the concentration of the solution. If the applied pressure is even higher from this point, the flow is reversed and the solvent crosses the membrane from the concentrated
solution to the dilute solution.

It should be noted that the mechanism by which osmosis occurs is not the same as that of the ultrafiltration process, although a membrane is used in both cases. Osmosis is based on a diffusion phenomenon of the solvent in the membrane, so that depending on the type of membrane, a wide variety of species cannot pass through it despite their low molecular weight.

Reverse osmosis can be used to separate a solvent from its solutes with high efficiency, yielding permeates with a salt concentration on the order of 15% of the original concentration.An essential element in this process are semi-permeable membranes that selectively allow the solvent to pass through and retain salts. Polyamide membranes, originally made from cellulose acetate, have recently been shown to be more efficient, allowing better control of pore size and hence permeability.

In general, reverse osmosis membranes have very low permeability to ions and electrostatically charged particles, while offering very low resistance to the passage of dissolved gases (oxygen, carbon dioxide, etc.) and uncharged small molecules.

A key reverse osmosis operating parameter that can jeopardize productivity and must be closely monitored is membrane fouling.This is due to several causes such as B. the precipitation of salts present in the feed, which can exceed the solubility product in the concentrate, sediments formed by colloids and other suspended particles, and finally the growth of microorganisms on the surface of the feed. Membrane.

The membrane cleaning technique depends on the composition of the food, the membrane type and the main source of contamination. In general, periods of membrane cleaning, during which cleaning solutions are circulated at high velocity over the membrane surface, are alternated with periods when the membranes are immersed in cleaning solutions. Typical are:

  • To remove salt deposits, an acidic solution (of hydrochloric, phosphoric or citric acid) and chelating agents such as EDTA.
  • Alkaline solutions are combined with surfactants to remove deposits and organic compounds.
  • For eliminating microorganisms, chlorine solutions and chlorine derivatives for sterilizing membranes.

A good membrane cleaning program will extend the life of the membranes and in most cases pre-treatment of the feed, often consisting of subsequent filtration, is desirable.


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