Every farmer knows that one of the most significant investments he or she will make is in an effective irrigation system as this is crucial to ensure uniform irrigation and optimal quantity and quality.
For this reason, when planning a new irrigation system or replacing an old one, measures should be taken to proactively ensure that the system continues to work efficiently in the long-term.
Clogging of irrigation systems
One of the most common irrigation system challenges is preventing irrigation emitter clogging as clogging can severely impact water application uniformity and the everyday maintenance of irrigation systems.
Emitter clogging can be caused by physical, biological and chemical clogging factors, which vary based on the source of the irrigation water (surface water, groundwater and reclaimed wastewater).
One of the most common irrigation system challenges is preventing irrigation emitter clogging as clogging can severely impact water application uniformity and the everyday maintenance of irrigation systems. Click to learn more.
Preventing clogging of irrigation systems
When designing an irrigation system clogging prevention solution, the following factors should be taken into account:
·Water source and quality
·Clogging factors in the water
·Emitter characteristics, such as the opening size
As these factors vary greatly from site to site, there is no standard recommendation to cover all conditions. In general, irrigation system design is aimed at preventing emitter clogging and should include the following:
·Chemical treatment (chlorination and/or acid injection)
·Flushing the dripper laterals to remove accumulated debris
Chlorination and disinfection procedures are crucial to controlling the biological clogging of irrigation systems. However, if the pH of the water is high (above 7.5), chlorination becomes relatively ineffective for bacterial control. For this reason, acid injection may be required to lower the pH level and increase the biocidal action of the chlorine.
When planning a new irrigation system or replacing an old one, take measures to proactively ensure that the system continues to work efficiently in the long-term. Click to learn more.
Regular flushing of irrigation systems is recommended to minimize the buildup of sediment and organic residues. The irrigation system should be designed so that the sizes of the main line, laterals and valves facilitate sufficient flushing velocity.
By including a regular maintenance program that includes inspection and flushing of your irrigation system, you will be able to significantly reduce the amount of emitter clogging occurring.
Different filter types are available for removing contaminants from irrigation water. The type of filtration solution selected is based on factors such as water source, type and amount of contaminants in the water, the design and size of the irrigation system (including the emitter design), and the required management and supervision practices.
Disc filters consist of a stack of discs, each with a series of microscopic grooves. The dimension of the grooves determines the mesh size of the filter. Water is filtered as it flows through the grooves.
Sand media filters
Sand media filters consist of tanks (usually made of carbon steel or stainless steel) filled with silica sand or crushed granite. As the water flows through the filtering media, contaminants are filtered out. The size and type of the sand media affects the filtering capacity and efficiency.
Screen filters are the most popular filtering devices used in irrigation systems and they are mainly recommended for removing physical, inorganic materials. They are relatively simple and economical devices that are available in a wide range of shapes, sizes, and screen meshes; and are usually made of metal, plastic or synthetic cloth enclosed in a special housing.
The advantages of screen filtration technology include efficiency, less flush water, a smaller footprint and quality.
Planning a new irrigation system or replacing an old one? Click here to learn how the Amiad Filtomat self-cleaning screen filter can help you save money, save water and save time.