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Member of IAGI (International
Association of Geosynthetics Installers)
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FLOATING COVERS - A Floating Cover System is an effective and economical solution to containment needs. Costs are considerably lower than conventional steel or concrete storage systems. A Floating Cover is a fabric cover manufactured using strong, flexible membranes which form an impervious and gas tight roof over the contained liquid. Some of the uses for these Floating Cover Systems are as follows. WATER RESERVOIRS - A Floating Cover System for Water Reservoirs offers a large cost saving compared with traditional steel roofed reservoirs with the dollar per litre cost of stored water dropping significantly the larger the storage. A strong, durable, flexible membrane Floating Cover can be installed to an existing concrete or steel reservoir to enable the collection of rainwater and prevent loss of water level through evaporation. The cover also provides a secure impermeable barrier preventing contamination. Water Reservoirs can also be constructed using a geomembrane Base Liner to contain the water incorporating a Floating Cover System with the above advantages. This System is cost effective in remote areas ie. Torres Strait Islands where Australian Lining Company has installed many of these applications to provide drinking and household water storages for these communities.
MOLASSES
STORAGES - Molasses Storages have become popular at Sugar Mills to
increase storage capacity of molasses needed for stockfeed after the crushing
season ends. Molasses Storages are similar to Water Storages consisting
ANEROBIC DIGESTERS - An Anaerobic Digester is used for the containment of waste material produced from food processing factories, sewerage treatment plants, pulp and paper mills, etc. It consists of a strong impermeable geomembrane lined impoundment covered with a sealed flexible membrane floating cover. The waste material is pumped into this storage system and anaerobically breaks down causing methane gas to bubble to the surface and is trapped under the floating cover. This gas is extracted from under the cover and flared off to be used in boilers or gas engines to generate power. This system eliminates odour problems associated with these types of storages, protects people and wildlife from hazardous wastes and local groundwater from contamination. Australian Lining Company P/L installed (the first of its kind in Australia) a reactor liner and floating cover for an Anaerobic Digester at the Kraft Cheese Factory, Warrnambool, Vic. The plant had been designed to treat the high-strength organic wastewater from the cheese
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geomembrane base liner installed to an excavated storage area followed by the
installation of a flexible membrane floating cover. Molasses is pumped
between the two layers causing the cover to rise with the increasing volume of
molasses. The roof is designed to provide a much larger surface area when the
storage is full. The roof helps keep out water and other unwanted matter. A
gas ventilation system can also be incorporated in the roof cover if required
to allow the collection and removal of gas created by the fermentation of the
molasses. This design of Molasses Storages incorporating high density
polyethylene lined impoundments and flexible floating covers are much more
cost effective compared to the more conventional steel storage tanks also
providing a product which is long lasting with low maintenance. There is no
reasonable limit to the capacity of these storages and price per tonne of
material stored drops considerably with increase in size. Australian Lining
Company has installed Molasses Storages for South Johnstone Sugar Mill (Nth.
Queensland) and CSR Sugar, Kingsthorpe, Toowoomba.
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