Self-Cleaning Media filter back wash water.

Self-Cleaning Media Filter Back-Wash Water.

Media filters are effective methods of filtration for a whole host of industrial and commercial water applications.  One common application is the use of media filtration installed in side-stream to a closed loop heating or cooling water system.

Using media filters in this way allows for a high level of filtration and water quality to be accomplished whilst using a relatively small piece of filter equipment – reducing capital cost and thus increasing return of investment.

The picture below was taken from one of our customer’s production facilities were one of our high efficiency self-cleaning media filtration systems was installed.  The picture is of a settlement tank used for recovering the back-wash water from the media filter (the water used when the media filter system cleans itself.)  The pipe entering the tank is from the back-wash outlet of the media filter system.

A good indication of how effective the filters system is operating is by looking at what is being removed by the filter.  Looking closely at the water in the tank you will see that the actual water in the tank is actually only a few inch deep and the rest of the tanks contents is actually solid particulate such as rust.  This has been removed from the system by the media filter over a period of 8 months.  This picture puts it into perspective just how much unwanted solids can be removed by one of our media filter systems over a relatively short period of time.

Back-wash water from one of our self-cleaning water filtration systems, filtering down to 0.45 micron

Particulate removed from a cooling water system by one of our self-cleaning media filtration systems


Using one of our media filters in this way can provide the following benefits:-

  • 1.  Protection provided to Chillers/Boilers/Heat Exchangers and Cooling towers.
  • 2.  Filtration down to 0.45 micron removes bacterial particulate assisting compliance with the L8 (legionnaires) guidelines.
  • 3.  Reduced maintenance requirements as system requires less cleaning.
  • 4.  Protection for pumps/valves and plant – reducing repair works and costs.
  • 5.  Increased production and product quality.
  • 6.  Lower water costs as flushing is less frequent.
  • 7.  System efficiency is increased reducing fuel costs.

If you would like to discuss your system with us please contact us.


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