Reverse Osmosis - RENTACS

Reverse Osmosis

Water Purification Process that Separate Ions, Unwanted Molecules and Larger Particles from Drinking Water

RENTACS Products

How Reverse Osmosis Works

Reverse osmosis or RO is a filtration method that is used to remove ions and molecules from a solution by applying pressure to the solution on one side of a semipermeable or selective membrane.

Large molecules (solute) can’t cross the membrane, so they remain on one side. Water (solvent) can cross the membrane. The result is that solute molecules become more concentrated on one side of the membrane, while the opposite side becomes more dilute.

The semipermeable membrane allows the passage of water, but not ions (e.g., Na+, Ca2+, Cl-) or larger molecules (e.g., glucose, urea, bacteria).

Reverse osmosis occurs when the water is moved across the membrane against the concentration gradient, from lower concentration to higher concentration. 

To illustrate, imagine a semipermeable membrane with fresh water on one side and a concentrated aqueous solution on the other side.

If normal osmosis takes place, the fresh water will cross the membrane to dilute the concentrated solution. In reverse osmosis, pressure is exerted on the side with the concentrated solution to force the water molecules through the membrane to the freshwater side.

Reverse Osmosis

Water Treatment for Domestic & Industrial use

  • ROS 40 Eco

    Water production of 40 litres per hour at 20°C, power consumption of 0.37Kw 220V - 50Hz and a water tank...
  • ROS 80 Eco

    Water production of 80 litres per hour at 20°C, power consumption of 0.37Kw 220V - 50Hz and a water tank...
  • ROS 160 Eco

    Water production of 160 litres per hour at 20°C, power consumption of 0.37Kw 220V - 50Hz and a water tank...
  • ROS 90

    Water production of 90 litres per hour at 20°C, power consumption of 0.55Kw 220V - 50Hz and a water tank...
  • ROS 180

    Water production of 180 litres per hour at 20°C using 0.75 Kw 220V - 50Hz of power and a 300 litre water tank...
  • ROS 360

    Water producing of 360 litres per hour at 20°C using between 1 Kw 220V - 50Hz power and a water tank...
  • ROS 600

    Water production of 600 litres per hour at a temperature of 20°C using between 1 Kw 220 V - 50 Hz power...
  • Q-Filter

    A self cleanable quartzite filter with a flow capacity of 1000 litres per hour or 2000 litres per hour...