The following reading contains examples of the different question types found in the
IELTS exam. Once you have answered the questions, check your answers in the Answer
Key in Appendix 1 at the back of the book.
More Water for Western Australia
Industry,. Science and Innovation Division of the Western
Australian Government Department of Commerce
A
Supplying quality water for a healthy life and a strong community is a major concern for
Australia. A lack of rain, warmer conditions, population, agriculture and industry growth put
strain on our existing and traditional supplies, especially in Western Australia.
Fortunately, innovative Western Australians manage this global quality water challenge by
encouraging open dialogue and undertaking meaningful research to develop infrastructure and
technology.
Desalination is just one of the solutions, and in 2006 Western Australia led the way in
delivering more water into Perth's public supply system with the opening of Australia's first
large-scale seawater desalination plant in Kwinana.
The Perth Seawater Desalination Plant is the Water Corporation's biggest single water
source, providing some 17 per cent of Perth's water needs. The state's second plant in the
Shire of Harvey is being constructed.
The National Centre of Excellence in Desalination (NCED) at Murdoch University leads and
coordinates Australian research into desalination technology. Through the NCED, Australia is building
national capacity and capabilities in desalination with a dual focus on breakthrough fundamental and
applied research, with a goal to deliver meaningful improvements at a commercial scale.
NCED is currently partnering a project to develop a suitable and sustainable desalination
system for providing drinking water in remote areas.
B
A need to supply more freshwater to the remote Tjuntjunjarra community prompted the
research by Academic Chair of Energy Studies at Murdoch University Dr Trevor Pryor.
Located 800 kilometres north-east of Kalgoorlie with a population of 120, the community
requires more freshwater of a better quality than can be supplied by the current source.
C
An innovative technology by Singapore company memsys clearwater, the thermal vacuum multi-effect-membrane-distillation (V-MEMD) desalination system, will make the water suitable
for use.
V-MEMD combines thermal and membrane technologies, working in a vacuum so that the
water boils at much lower temperatures of 50 to 80 degrees Celsius instead of the usual 100
degrees Celsius.
memsys Managing Director Gatz Lange said the company had the first small-scale modular
thermal separation process.
'We didn't change the thermal technology itself - you can't change physics - we are just
the first to put this advanced technology of thermal separation in a very tiny, cheap and reliable
modular concept,' he said.
D
However, the next challenge is finding a power source for the system in such a remote area.
Dr Pryor and his team aim to overcome the problem of the intermittency of renewable energy
resources by developing a cost-effective hybrid solar/waste thermal system.
Dr Trevor Pryor said the 2-year project would explore the use of solar thermal and waste
heat to power the V-MEMD.
This project aims to extract groundwater to supply the Indigenous community's needs
through chemical free, sustainable and energy efficient pre-treatment that has been customised
to the T juntjunjarra water resource,' Dr Pryor said.
The project partners are Murdoch University, University of Technology Sydney, WA
Department of Housing, Parsons Brinkerhoff, memsys clearwater, the Institute of Filtration and
Techniques of Separation in France, and the Singapore Membrane Technology Centre.
The Department of Commerce provided the National Centre of Excellence in Desalination
$3 million to help design, establish and operate a range of testing facilities.
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