Geosmin and 2 methylisoborneol (MIB) are earthy/musty odour compounds produced as secondary metabolites by some cyanobacteria and actinomycetes. At levels as low as 5–10 ng l−1 in drinking water they can result in consumer complaints, and consequently their removal from potable water is a priority for many suppliers. In water treatment plants where taste and odour episodes are common, the homogenous surface diffusion model (HSDM) can be used to estimate powdered activated carbon dose requirements under a range of conditions including inlet concentration and plant flow rates (controlling PAC contact time). Water quality, in particular dissolved organic carbon concentration and character, can affect the required doses of PAC, as can the addition of chemicals such as alum and chlorine. There is significant scope for the more cost-effective utilisation of powdered activated carbon for the mitigation of taste and odours, as well as a wider range of other micro-contaminants, using tools such as the HSDM, in conjunction with knowledge of the effects of water quality and water treatment processes.
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December 2002
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
December 01 2002
Influences on the removal of tastes and odours by PAC
Gayle Newcombe;
1Australian Water Quality Centre (a partner in the CRC for Water Quality and Treatment), PMB 3, Salisbury, South Australia 5108, Australia
E-mail: [email protected]
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David Cook
David Cook
1Australian Water Quality Centre (a partner in the CRC for Water Quality and Treatment), PMB 3, Salisbury, South Australia 5108, Australia
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Journal of Water Supply: Research and Technology-Aqua (2002) 51 (8): 463–474.
Article history
Received:
November 02 2001
Accepted:
March 22 2002
Citation
Gayle Newcombe, David Cook; Influences on the removal of tastes and odours by PAC. Journal of Water Supply: Research and Technology-Aqua 1 December 2002; 51 (8): 463–474. doi: https://doi.org/10.2166/aqua.2002.0040
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