Geosynthetic materials including geomembranes and geotextiles have been used extensively in waste water treatment systems as substitutes for conventional materials. This paper explores the · potential for geomembrane materials to be a key element in developing new energy and resource efficient treatment technologies. The major element of these systems is an anaerobic lagoon process utilising geomembrane liners and geomembrane floating covers. These systems are energy and resource efficient in their operation and produce methane gas which is available for use as a renewable energy source. The paper describes the principles of these systems and presents a case study of a large anaerobic lagoon with a floating geomembrane cover and gas utilisation.
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