Reclaimed wastewater as a resource for sustainable water management

Aravinthan, Vasantha (2005) Reclaimed wastewater as a resource for sustainable water management. In: 2005 Southern Region Engineering Conference: Managing Resources for a Sustainable Future (SREC 2005), 15 Oct 2005, Toowoomba, Australia.

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Abstract

Population growth accompanied by higher standard of living and ongoing drought conditions caused by changing climatic patterns tend to make water availability as a key national issue not only at present but for the decades to come. The urban cities located around the coastal areas look for the possibility of desalination of sea water whereas the inland cities explore wastewater reuse as a last resort for indirect potable use to meet the envisaged water shortage. Toowoomba City Council acknowledged that Toowoomba would run out of water in two years if the current drought persisted and, therefore, is planning to augment the present water supply with highly treated wastewater using the best technologies available. The concept of reclaimed wastewater to be considered as a resource rather than a waste has been a subject of debate. There are many instances of communities practicing the unplanned indirect potable reuse unknowingly. Tertiary treated wastewater and sometimes untreated industrial and agricultural wastes are returned to the water body from where downstream utilities withdraw water for potable uses. The receiving water bodies have the natural assimilative capacity to clean up the waste discharged into them; however, their limits have been exhausted during the last decade or so due to increased loading discharged containing synthetic chemicals. Planned indirect potable reuse aims to remove these contaminants present in the tertiary treated effluent using advanced treatment technologies with multiple barriers before discharging them into the water bodies to augment the drinking water supply downstream or of their own. Considering the facts that many conventional sources of fresh water become scarcer and more contaminated but emerging innovative state-of-the-art technologies are available to remove the contaminants, planned indirect potable reuse could be a promising solution for sustainable water resources management. This has been reflected in that many utilities around the world have either been planning or already implementing the advanced reuse systems. This paper reviews some indirect potable reuses practiced in the world, the treatment methodologies adopted and discusses how stakeholders can contribute for continued sustainable supply of these water resources.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: USQ conference.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 11 Oct 2007 00:28
Last Modified: 02 Jul 2013 22:33
Uncontrolled Keywords: reclaimed wastewater; wastewater reuse; water recycling; sustainable water management; Toowoomba City Council
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090508 Water Quality Engineering
03 Chemical Sciences > 0399 Other Chemical Sciences > 039903 Industrial Chemistry
09 Engineering > 0905 Civil Engineering > 090509 Water Resources Engineering
Socio-Economic Objective (SEO2008): B Economic Development > 90 Commercial Services and Tourism > 9004 Water and Waste Services > 900403 Water Recycling Services (incl. Sewage and Greywater)
URI: http://eprints.usq.edu.au/id/eprint/730

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