Nanofiltration

Nanofiltration is often used to filter water with low amounts of total dissolved solids, to remove organic matter and soften water.

Nanofiltration (NG) Process

Nanofiltration is often used to filter water with low amounts of total dissolved solids, to remove organic matter and soften water. The design and operation of nanofiltration is very similar to that of reverse osmosis, with some differences. The major difference is that the nano membrane is not as “tight” as the reverse osmosis membrane. It operates at a lower feedwater pressure and it does not remove monovalent ions from the water as effectively as the RO membrane.

While a RO membrane will typically remove 98-99% of monovalent ions, such as chlorides or sodium, a nanofiltration membrane typically removes 50% to 90%, depending on the material and manufacture of the membrane. Because of its ability to effectively remove di- and trivalent ions, nanofiltration is frequently used to remove hardness from water while leaving the total dissolved solids content much less affected than would RO. For this, reason it has been called the “softening membrane”.

nonofitration systems

Other Water Treatment Systems

ultrafiltration systems

Pre-Treatment Systems

We offer pre-treatment systems as preliminary filtration stage for our membrane systems or for stand-alone applications.

ultrafiltration systems

Ultrafiltration Systems

We offer ultrafiltration systems (UF) to remove suspended solids from the feed water.

reverse osmosis systems

Reverse Osmosis Systems

Reverse osmosis is capable of removing particles down to 0.0001 micron when used for commercial water treatment.

electro deionization systems

Electro Deionization Systems

A continuous membrane process in which a DC electric field is used to remove ions and polar species from an aqueous stream.

chemical dosing systems

Chemical Dosing Systems

We offer chemical dosing equipment as options to our water treatment systems or as stand-alone units.

nonofitration systems

Nanofiltration Systems

Nanofiltration is often used to filter water with low amounts of total dissolved solids, to remove organic matter and soften water.