Chemical Engineering @ChemengFiles.Com

One of the most common and effective methods for water treatment which aims to achieve the purification of it are those which are conducted through membranes of different types. Variants ultrafiltration is recommended for large amounts of fluids.

Ultrafiltration is used for water treatment in cases where there is a large amount of suspended solids, viruses, endotoxins, bacteria and colloidal particles. This is so because the ultrafiltration membranes are sort of these, characterized by the semi-permeability and low pressure, thus eliminating elements produce high molecular weight as those named.

The operation of this type of water treatment begins when the fluids are driven by the low pressure system, which at the time of impact with the membrane, only continuing with salt water and minimum molecular weight particles. It is for this that the ultrafiltration is often used prior to the completion of reverse osmosis, which only allows passage of fluid, as well as nanofiltration.

As a result of ultrafiltration obtained the removal of microorganisms and particulate matter 90 percent, producing a molecular cutoff thousand and 100 thousand. It is also possible to remove arsenic from water itself comes to homes or industries previously treated with injections only add coagulants. Thanks to this treatment gives a clearer water because it achieves a zero turbidity.

During the process of ultrafiltration through membranes generates a stream called cross-over occurs commonly in other processes. The main difference is that through the cross flow occurs flushing of the membrane, while the elements are directly plugged quickly, which brings about an increase in the frequency of cleaning. That's why, ultrafiltration systems that involve long-term, significant savings and a completely safe investment.

Currently there are two systems used to this kind of water treatment. One is the element of pressure plates in one. This consists of a single device in which the container is pressure along the membrane. The other is that in which they are separated.