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Self-cleaning screen filters protecting emitters from clogging
n irrigation system that uses subsurface water, or groundwater, must deal with different impurities to those found in water from surface sources, such as mineral
substances. A high level of minerals can clog your irrigation system on two fronts. Clumped sand from well water can physically clog your system, and chemical interactions among minerals like magnesium, hard water and fertilizers, can also increase the chances of clogging.
Unfiltered well water can wreak havoc on agricultural profitability and yield.
Unfiltered well water can wreak havoc on agricultural profitability and yield. Some of the problems that can result from using unfiltered or inadequately filtered water in your irrigation system include
• clogged emitters, resulting in uneven irrigation and reduced yield and/or plant damage or loss.
• stuck or poorly functioning valves.
• pump failure.
• reduced pressure in the system, which can cause myriad issues including damage to the system and/or inadequate water distribution.
There is more than one way to protect your irrigation system from clogging, but the best way is to prevent it. A good water filtration system will save you time and money.
One option is an automatic self-cleaning screen filter. These filters were first developed 40 years ago. Over the years, they have been improved and upgraded to provide high quality and reliable filtration, protecting all types of irrigation systems. These filters use suction-scanning technology to clean the screens.
How do they work?
Dirty water flows into the filter to the screen element from the inside out causing particulates larger than the filtration degree (pore size) of the screen to accumulate forming a filter cake. Clean water then leaves the filter to the irrigation system.
18 Irrigation TODAY | January 2019
Photo credit: Amiad
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