For dialysis we require specific water quality by using RO Plant and DM Plant we can achieve that quality
Water for dialysis should always have less than 5 conductivity irrespective of incoming water TDS.
It was noted that most of the time Corporation water would be given as feed to RO, however,
in extreme circumstances, Borewell or tanker water will be given as RO feed. It was brought
to the notice of all concerned that RO membranes reject @ 95 – 98% salts, hence to achieve
less than 5 conductivity always will be very difficult after RO plant alone.
Hence, we can install a polishing DM unit so that the water for dialysis will always be less than 5 conductivity.
Normally the process follows the basic steps of: FILTRATION, REVERSE OSMOSIS & ION EXHCANGE
Raw water is pumped through pressure sand filter, Activated carbon filter for turbidity Bacteria,
Suspended particle removal from incoming water. It is then fed to the micron Cartridge filter
MICRON FILTRATION BY MCF:
The raw water is passed through Micron Cartridge Filter. It removes fine suspended matter and
reduces colloidal present in water and lowers down SDI value of water before passing it to RO system.
The pore size of cartridges is 5 µm. Antiscalant chemical is added online to protect membranes from scaling/Fouling.
REVERSE OSMOSIS SYSTEM:
Water from MCF is pumped through RO Feed Water Pump into Reverse Osmosis System.
Here pressurized water is passed through RO Membranes to remove Dissolved Solids from water.
Water flows from a more concentrated solution through a semi-permeable membrane to a less concentrated solution.
Thin Film Composite Semi Permeable Membranes under the influence of external pressure will undergo the process of
Reverse Osmosis separating high saline water into Very Low Saline Permeate and Very Highly saline Reject streams.
Feed quality coupled with pre-treatment and membrane selection; determine the recovery that can be obtained through the RO system