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As source water passes through a sand media filter, a wide variety of both organic and inorganic materials are captured in the media bed while allowing the now filtered water to pass through. Media comes in a variety of types and sizes. Depending on the media used, irrigation water from virtually any source can be filtered effectively. It is this fact that has made the media filter the traditional standard in drip and sprinkler irrigation for many years. |
Backwashing or Backflushing refers to the removal of captured
materials that have been effectively filtered out of the original source water. When
the filtering media has captured enough material to cause the pressure differential
between the inlet and the outlet of the filter to reach a predetermined level (or at
specific timed intervals) the flow of water is reversed through the sand bed and the
captured material is flushed out. |
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