How Do Water Filter Systems Work?

As water is becoming a scarce resource, it is very necessary for human beings to apply methods to successfully clean and recycle water.  This not only reduces the impact that we have on the environment and water supply, but also has financial advantages to businesses and consumers that pay for water, for domestic purposes. 

Waste water is normally water that has already been used for certain processes – domestic waste water would include water used for bathing or washing dishes, and in some cases, sewerage.  Industrial waste water (or effluent) can be contaminated with just about anything and can be highly toxic, and as a result, it is important that the water is cleaned and purified thoroughly, and that all toxins or contamination is removed before reuse or disposal in drainage systems.  In some cases, it is also necessary to protect certain sensitive components in equipment from the various types of abrasive grains or fragments in water used during industrial processes.

There are many methods used to purify and clean water, and usually some sort of filtration system is used in some of the cleansing processes.  After the solids have been removed and the water has been clarified, the next step would be to filter the water with various types of filtration systems.  The process is done with the use of a wide range of filtering equipment and methodologies, and it is done to remove micro pollutants and any remaining unsuitable substances from the water.

Different types of filtering systems are used to remove different classes of pollutants, and there is a great variety in filter systems and their applications.  Sand can be used, as well as disc filters, filter beds, screens, filter cloths and other applicable media.  Activated carbon filtration is also frequently applied, sometimes in combination with other filter types.  Minerals that can be used in filtration systems also include anthracite, limestone and magnetite zeolite, as well as activated alumina.

Water filtration systems are not only applied to waste water, they are also used for other applications, such as separating water from solids or proteins, in order for the solids to be processed into products.

In South Africa, there are two main types of water filtration systems that are used most often.


Ultra Filtration Systems

This entails the use of a filtration membrane.  In order to purify water, it is forced through these semi-permeable membranes with the use of hydrostatic pressure.  All microorganisms are effectively prevented from moving through the membranes, and as a result, safe, clear water that has no chemical smell is produced.  The process can be automated and is designed to be compact, easy to install and simple to use.  This type of filtering is used in a wide range of applications, such as biotechnological environments, to clarify juices from fruits and vegetables, and also for the separation of proteins from water, such as in the process of cheese making.  It can also be used for the simple sterilisation of drinking water or high grade water purification for laboratories.  An extensive range of filtering membranes is available for use and the type of membrane used will depend on the type of materials that have to be processed.

WaterIcon is a leader in the field of water filter systems and has installed many filters at client sites and operations throughout South Africa.  The filters are manufactured in our own workshops in Gauteng, and we have the skill, expertise and state-of-the-art products on hand to ensure effective and efficient filtering operations.  To find out more about our services and products, speak to one of our consultants today!

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