This article will focus on just one of his fundamental configurations, referred to as the ‘pipe-in-a-pipe’ airlift pump (Figure 2). In certain configurations, these airlift designs can lift water much higher, even as high as 30 meters out of a subterranean well. Until recently, airlift pumps were only good for lifting water 10 - 15 cm at most, however Glenn Martinez from Hawaii has since shared with the international community easy-to-build designs that can readily lift water 2 to 3 meters in height. In contrast, airlift water pumps take advantage of the relatively lighter density of air to lift water. What is an Airlift Pump?Ī conventional water pump uses mechanical rotation to directly pressurize and move water. However, new developments in appropriate pump technologies offer options that can save money, increase reliability, improve longevity of equipment, and offer certain other benefits that to be presented in this article. While convenient and useful, pumping water does come at a cost – from the necessary consumption of energy, to the regular maintenance of moving parts.
Pumps of different types are regularly used for water storage & filtration, irrigation, aquaculture systems, and more. Water pumps have long been a key component of the small-scale farm and are valuable labor-saving devices that offer a variety of practical applications. Several additional resources have been included and further questions can be directed to Terry Stratton Introduction Figure 1: Aquaponics system running on an ‘Airlift’ water pump at the Natural Farm Training Center, University of the Nations, Hawaii. The following article aims to introduce the airlift pump concept and provide a basic overview of design set-up. The team has over eight years of experience with the campus Natural Farm Training Center that includes building, operating, and teaching about aquaponics and airlift pump configurations for small to medium scale aquaponics systems in Hawaii, and internationally in community development settings. The author of this article, Terry Stratton, along with his wife Cyndi and Science & Tech department head Vernon Byrd serve as full-time volunteers at the University of the Nations, Hawaii. [Editor’s Note: The contents of this article have been adapted, with permission, from the innovations of Glenn Martinez of Olomana Gardens Hawaii.
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