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Method |
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Advantages/Considerations |
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| Air Injector |
Uses venturi which sucks in air when the well pump runs. As water passes through venturi, a vacuum is created and sucks in air.
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Low cost. Easy to install and operate. Venturi's create very tiny micro-bubbles allowing good transfer of the oxygen in air to the water. Separate air tank allows some air to off-gas, preventing bubbles in water. Consideration: venturi air injectors work on the principle of pressure drop,so some loss of pressure does occur in the house. Air venturi must be cleaned once or twice a year (takes 20 minutes).
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| Air Charger |
Each night when filter backwashes, it draws in air. As water enters the iron filter it has to pass through a head of air.
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Low cost. Very easy to install and maintain. Maintains a head of air above the iron filter media. This works particularly well on waters with moderate levels of iron. Consideration: requires backwash nightly in order to maintain head of air. Backwash is automatically done each night. Air injector that allows the air to be sucked must be cleaned once or twice a year (takes 10 - 20 minutes).
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| Air Compressor |
Uses a heavy-duty air compressor to blow in air under pressure. When well pump turns on, compressor turns on & keeps a head of air inside air tank.
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Uses the highest quantity of air. Lowest maintenance, no injectors to clean. Allows greater levels of oxygen to be dissolved into water, allowing higher amounts of iron and sulfur (hydrogen sulfide) gas to be removed. Lasts for many years with low maintenance. Consideration: air compressor does have some noise, about 70 decibels, similar to a pump motor running. Runs only when well pump is running.
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| Aeration Storage Tanks |
Uses storage tank. When the water enters the storage tank, compressor turns on & blasts the water with air bubbles.
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Best for removing excess gasses in water such as hydrogen sulfide, radon and carbon dioxide as well as treating for iron. A storage tank aeration system has a second booster pump, so pressure and flow rate is maximized inside home or business. This method has the most contact time of any of the aeration methods, allowing the oxygen in air to do a great job at oxidizing higher levels of gasses and iron. Can be combined with chlorination or ozone for waters extremely high in iron and odors. Use with Birm or MangOX filters.
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