Evaporation ponds

This research investigates an innovative approach to augmenting the current evaporation pond disposal approach used in Australia, and other regions around the world. The augmentation involves the incorporation of solar plate collector technology. The technology is widely used across the world to collect solar power to drive a range of commercial and domestic applications, most commonly solar hot water systems.

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Extraction activities disturb the land surface through clearing of vegetation, removal of topsoil, excavation of ore and overburden and the construction of over- burden dumps or solar evaporation ponds. Removal and stockpiling of topsoil for subsequent rehabilitation is carried out at many mining opera- tions. In a number of cases, topsoil is removed and placed directly on landscaped reclaimed areas. This avoids the cost of re-transporting topsoil from stock- piles and the possible reduction of biodiversity.

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Surface brine deposits are exploited using solar evap- oration ponds to concentrate and precipitate the potash. The evaporation ponds are extensive, with some operations covering in excess of 90 square kilo- meters of land area to produce around 8 million tonnes of potash ore per year. Conventional mechanized underground mining oper- ations are the most widely used method for the extraction of potash ore.

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