ADVANTAGES OF SPRAY VS. DRIP IRRIGATION
Water is distributed throughout the air over an extensive area.
Factors affecting spray irrigation include:
- Wind drift
- Water runoff
- Water collection on garden mulch
- Frequent vandalism
- Promotion of plant disease
Drip irrigation overcomes water wastage problems and can save up to 60% of water usage.
Drip irrigation allows for efficient irrigation by targeting the root zone and dispersing water at ground level, minimizing susceptibility to the factors mentioned above. Dripperlines may be used in every application, from the irrigation of small home garden beds to advanced sub-surface lawn systems.
Dripper lines are extruded from polyethylene and inserted with internal drippers that are molded into the inner wall of the poly tube during the extrusion process. These dripper lines come in a full range of drip tubes and are available in brown, black and purple to suit any irrigation application. The advantages of using drip systems over spray systems are as follows:
Water savings and prevention of:
- Wind drift
- Reduced plant disease
- Reduced weed growth
- Minimized vandalism
- Aesthetic appeal
- Safe to use with waste water
IRRIGATION FILTERS: TYPES & APPLICATIONS
Pre-irrigation water filtration reduces maintenance and improves the lifespan of a range of irrigation systems and for many systems, filtration is a necessity to avoid blockages.
A range of effective irrigation filters are available and the correct type should be selected based on the size and type of the irrigation system and the method and quality of water supply.
Water Tank Solutions are happy to consult with you and guide you on the best choice of filtration for your irrigation system.
Screen filters are popular and inexpensive. They separate the sand and fine particles out of the water and are recommended for filtering algae and other organic matter. Common screen materials include Nylon, Polypropylene, Stainless steel and Polyester. Benefits of screen filters include; corrosion resistance, easy installation and low maintenance.
Screen filters remove contaminants from water before nutrient leach which makes them popular choices for recirculating agricultural systems.
Screen filters are cleaned by washing them with a stream of water or by removing the screen and cleaning it by hand.
Screen Filters are effective in both drip and sprinkler irrigation systems.
Disk Filters are similar to screen filters, however, the filter cartridge is made from compressed, stacked nylon disks. The disks are grooved to a specific micron size and they integrate the benefits of both screen and media filtration. Water passes through the small grooves in between the disks and impurities are trapped. Disk filters provide excellent performance and are considered the optimal choice for almost all micro-irrigation systems.
Disk filters can be cleaned easily and are UV resistant.
Disk filters are good at removing both particulates like sand and organic matter. Commonly used in drip and sprinkler irrigation, they can also be used in combination with Screen filter with excellent results.
Sand & Gravel Filters
Sand Filters are most suitable for removing organic material from water sources such as ponds, rivers or canals, where the level of organic particulates is high. The level and quality of filtration depends on the sand used in the filter and the water velocity.
Sand and gravel filters are cleaned by back washing to flush the suspended materials.
Also know as centrifugal filters, hydro-cylone filters are specifically used for removing sand and silt particles from the water supply.Centrifugal action, applied by the filters construction, forces sand particles to the outer edge of the cylinder shaped filter and they eventually sink to a reservoir below.
Hydro-clone filters are an effective and simple method of removing sand and other solids from irrigation water, however, they may not remove all particles. For systems using micro-irrigation an additional disk filter is highly recommended to avoid blockages.
A hydro-cyclone used in conjunction with disk filter is an excellent combination.
Selection of hydro-cyclone must be correctly calibrated to the flow rate of the system or the filter will not work properly.