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Recycling Water for our Cities

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Describe the challenges facing the supply of water to our cities ... Dr Deborah Rathjen CEO Bionomics Limited (Chair) Prof Peter Cullen Uni of Canberra (Deputy Chair) ... – PowerPoint PPT presentation

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Title: Recycling Water for our Cities


1
Recycling Waterfor our Cities
  • PMSEIC
  • 28 November 2003

2
Terms of Reference
  • Describe the challenges facing the supply of
    water to our cities
  • Identify major opportunities obstacles for
    utilisation development of water technologies
  • Outline the impact of science, engineering
    innovation in addressing urban water recycling
    issues
  • Suggest practical solutions

3
Working Group Membership
  • Dr Deborah Rathjen CEO Bionomics Limited
    (Chair)
  • Prof Peter Cullen Uni of Canberra (Deputy Chair)
  • A/Prof Nicholas Ashbolt University of New South
    Wales
  • Dr David Cunliffe SA Department of Human
    Services
  • Dr John Langford Water Services Assoc of
    Australia
  • Mr Andrzej Listowski Sydney Olympic Park
    Authority
  • Prof Jennifer McKay University of South
    Australia
  • Dr Tony Priestley CRC for Water Quality
    Treatment
  • Dr John Radcliffe CSIRO

4
Aims of the Presentation
  • To highlight
  • The increasing pressure on our water supplies
  • The need for alternative water supplies
  • The role of recycled water in our cities
  • The need to invest now in research, innovation
    and demonstration of the emerging technologies

5
The Challenge
  • Providing enough water to sustain our cities in
    the face of
  • Population Growth
  • Drought
  • Climate Change

6
Declining Rainfall
Average over past 5 years
Courtesy Bureau of Meteorology
7
This is the The Big Squeeze which must be
addressed to ensure Australias continued
economic growth
8
We need comprehensive strategies
  • To encourage people to use less water
  • To find alternative sources of water

9
Demand management has already picked the low
hanging fruit
  • Over the last 20 years
  • Demand around 600,000 ML
  • Population up by 700,000

10
Presently little use of recycled water in our
cities!
Recycled water could provide 50 of household
water
  • Garden 35
  • Bathroom 26
  • Toilet 19
  • Laundry 15
  • Kitchen 5

Melbourne household water use
11
Melbourne Cricket Ground
Circa 2003
Circa 2030
12
We have the technologiesto bring waste water up
to drinking standards
  • Some communities around the world are already
    doing this
  • In Australia the challenge is to substitute
    recycled water for non-drinking purposes
  • Sydney Olympic Park and other demonstration
    projects are showing us the way
  • Learning how to make them cost effective
  • Building community trust

13
Icon Development Sydney Olympic Park
  • Saves 50 or about 850 million litres of drinking
    water per year
  • Recycled water is sold at 0.83 cents per 1000
    litres, 15 cents less than drinking water
  • Social and environmental benefits
  • Third pipe system

14
Community acceptance of recycled water
  • Community acceptance drives the agenda
  • Community must appreciate the need and that
    safety is assured
  • Wide acceptance of recycling for non personal
    uses
  • 70 opposed to drinking recycled water

15
Recycling at Household scale
  • Quite feasible but requires knowledge and
    commitment
  • Not supported as the way to go
  • Health risks with greywater recycling on block
  • Real possibilities at office/apartment block
    scale with recycling plant in basement

16
Third Pipe Systems
  • Deliver recycled water to homes for gardens and
    toilet flushing
  • Fit for purpose or full treatment?
  • Risks of cross connections
  • Distributed STW vs large end of pipe plants

17
Protection of public health must be ensured by
the development and implementation of best
practice guidelines
  • Fast track reform of the Health and Environmental
    Guidelines for the production and use of recycled
    water

18
CoAG National Water Initiative
  • Awareness and education about advantages
    practices of recycling
  • Pricing policies of drinking water and recycled
    water to ensure efficient use of these resources
  • Development of decision-making tools for urban
    water management
  • Sustainability scorecard
  • Public engagement guidelines

19
Sustainability Scorecard
  • Economic
  • Capital and recurrent costs
  • Whole of life costing
  • Economic development
  • Environmental
  • Effects of water collection, storage and disposal
  • Environmental costs energy and salt balance
  • Health
  • Microbial and chemical risks
  • Social
  • Compliance and equity

20
Driving Innovation
  • Investing in research and people ensuring
    uptake by industry
  • Regulatory framework to specify outcomes not
    means
  • Demonstration projects evaluation
  • System science to put the various technologies
    together
  • Capping extraction allowing price differentials
  • Setting recycling targets may drive silly
    investments
  • Seeking cost reductions efficiencies

21
National Leadership
  • Funding to encourage demonstration projects of
    water smart urban sub-division
  • Funding to encourage recycling in city buildings
  • Rigorous monitoring evaluation a condition of
    support
  • Demonstrate public safety and raise community
    understanding acceptance

22
Going Forward
  • A squeeze on urban water supply
  • Drive innovation to improve efficiency of water
    use find alternative sources of water
  • Science opening up many opportunities
    especially putting the various bits together

23
Going Forward
  • Ignorance is not bliss we must lift
    understanding of smart water use
  • With recycling we must assure community health
    fast track better guidelines
  • Many recycling opportunities need
    sustainability scorecard other tools to help
    communities decide

24
Recycling Waterfor our Cities
  • PMSEIC
  • 28 November 2003
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