R K Water provides Nano filtration membrane system. We supply skid mounted Nano filtration membrane systems of all capacity.
Nano filtration (NF), in concept and operation, is more or less similar to reverse osmosis (RO). The main difference is the percentage of removal of salts & its operating pressure. Nano filtration (NF) allows the monovalent ions to pass through the membranes such as chlorides. Nano filtration (NF) removes 40% to 90% of monovalent ions, depending on the material and manufacture of the membrane; whereas RO Membrane, at higher operating pressure, rejects all kind of salts between 95% to 99% depending on the type of salts.
Nano filtration technology is a cross flow membrane filtration which rejects particles in the approximate size range of 1 nanometre. Nano filtration (NF) falls between Ultrafiltration (UF) and Reverse Osmosis (RO) Membranes.
Dissolved salts are rejected in the range of 20-98% depending on type and concentration of salts. Typical applications of Nano filtration (NF) include removal of colour, total organic carbon (TOC) & hardness from water. Also, the overall reduction of total dissolved solids (TDS) occurs within the process.
Nano filtration (NF) is being used for separation of organic & inorganic mixtures. Nano filtration membranes are also used for desalting or deashing application. These membranes allows chlorides to pass through the membrane in permeate and product remain in the concentrate. Nano filtration (NF) membranes are sometimes referred to as softening membranes due to their ability to reject calcium and magnesium. Nano filtration (NF) membranes also remove sulphate from the water.
