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Strategic Action Plan: Reduction of salinity and contamination of a brackish man-made lake in Western Australia: VenuesWest Champion Lakes Regatta Center

Griffiths, Joel (2015) Strategic Action Plan: Reduction of salinity and contamination of a brackish man-made lake in Western Australia: VenuesWest Champion Lakes Regatta Center. Honours thesis, Murdoch University.

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Abstract

Sport and recreation is a crucial part of the fabric of Australian life. Sporting and recreational activities as well as events help to contribute to the development of strong social networks and cohesive communities. They provide opportunities for social engagements, which may lead to an increased awareness and acceptance of inherent differences between communities and individuals (Department of Sport and Recreation 2015).

Although extremely important, providing a community with a large scale recreational facility can provide ongoing challenges in regards to health and safety, as well as environmental considerations. This report outlines some of the negative impacts associated with the operation of the Champion Lakes Regatta Centre (CLRC) and provides strategic action plan (SAP) for a suitable approach to addressing the impacts outlined and reducing the risk of recurrence.

A number of water treatment options are outlined for consideration. Through the use of a selection matrix, options are weighted in order to propose a system which is most attractive for the purposes of salinity reduction and contaminant risk reduction. The process which had the highest score on the selection matrix was Reverse Osmosis (RO). The process of reverse osmosis is outlined with special consideration given to brackish water treatment as this is the classification given to the lake water. Limitations involved with this approach include the weighting factors being open to interpretation.

Equations to estimate the pump requirements to overcome the osmotic pressure of a solution with similar total dissolved solids (TDS) content to that of the lake water are outlined and expected pump requirements are calculated in order to propose a design requirement for the implementation of a reverse osmosis system at the rowing course.

An operational pressure greater than 24 bar is required according to the calculations conducted. Design considerations for the treated water quality are outlined; however large scale testing was not conducted due to financial constraints.

Publication Type: Thesis (Honours)
Murdoch Affiliation: School of Engineering and Information Technology
Supervisor: Li, Linda
URI: http://researchrepository.murdoch.edu.au/id/eprint/29860
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