Authors / CoAuthors
Page, D. | Vanderzalm, J. | Miotlinski, K. | Barry, K. | Dillon, P. | Lawrie, K. | Brodie, R.S.
Abstract
The success of Aquifer Storage and Recovery (ASR) schemes rely on defining appropriate design and operational parameters in order to maintain high injection rates over the long term. The objective of this study was to develop a methodology to define the water quality criteria and hence minimum pre-treatment requirements to allow recharge at an acceptable scale. Laboratory column studies using four types of treated source water were performed at constant temperature (19°C) with light excluded, to determine the potential for near-well clogging for a proposed ASR scheme. The source water was turbid raw water from the Darling River and three treated waters including bank filtration, coagulation, and coagulation and granular activated carbon (GAC). Over the 37 days of the experiment, declines in hydraulic conductivity occurred in the columns packed with representative aquifer fluvial sands. The GAC treated town water gave an 8% decline in hydraulic conductivity, which was significantly different from the other three source waters with mean declines of 26-29%. Over the first 3 cm of column length, where most clogging occurred in each column, the mean hydraulic conductivity declined by 10% for GAC treated water compared with 40 to 50% for the other source waters. Evidence from polysaccharide concentrations and bacterial numbers in columns when they were dissected and analysed at the end of the experiment confirmed that biological growth was the dominant form of clogging in the treated waters. Further chemical clogging through precipitation of minerals was found not to occur within the laboratory columns, and dispersion of clay was also found to be negligible.
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nonGeographicDataset
eCat Id
73802
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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- External PublicationAbstract
- ( Theme )
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- groundwater
- ( Theme )
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- hydrogeology
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2012-03-15T00:00:00
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