Generally, water treatment involves successive stages of filtration and disinfection. In most cases, chemical products are used, hence the term "physical-chemical treatment".
Aquasource Ultrafiltration is a solely physical process in which the two stages are carried out simultaneously. This filtration technique involves passing water through porous membranes. These membranes are in the form of long hollows fibres. The wall acts as a filter for all particles larger than 0.01 micron: pollen, algae, parasites, bacteria, viruses, germ and large organic molecules. The result is perfectly pure water.
This is a universal process that can be installed on its own or integrated into a more complex treatment line. Ultrafiltration clarifies and disinfects water in a single step.
A universal procedure which can be installed alone or incorporated in a more complex treatment process, Ultrafiltration clarifies and disinfects the water in one single step.
Ultrafiltration is a low pressure membrane process used to separate high molecular weight compounds from a feed stream. The filtration technique involves passing water through porous and hollow fibre membranes. With larger pores than nano-filtration and reverse osmosis membranes, ultrafiltration requires fewer membrane modules and lower pressures for operation – making ultrafiltration the least costly of the three to operate.
Ultrafiltration is widely used in industry wherever fine filtration (down to 0.01 microns), disinfection, or the removal of organic contaminants is needed. Some examples of compounds effectively removed by ultrafiltration include paint pigments, ink, colloidal silica, tannins, and lignins. In general, salts and low molecular weight species can pass through the membrane while suspended solids become concentrated on the other side of the membrane surface.
Ultrafiltration is commonly used to disinfect surface water from rivers and lakes for use in drinking water plants due to its ability to remove bacteria, viruses, and cysts (up to 6 and 7 log reduction). Ultrafiltration produces the highest quality water for the least amount of energy. The result of ultrafiltration is perfectly pure, disinfected water with a turbidity of less than 0.1 NFU.
