Transcript Stage Two: +7 – 14 GL pa

MIECF 2014
Advancements in Water Reuse in Western
Australia
Presented by Ashley Vincent
General Manager Planning and Capability Group
Water Corporation of Western Australia
Western Australia
• One third of Australia’s
land mass
• North of the State
– Hot, wet, sparsely
populated
• South of the State
– Warm, moderate
winter rainfalls
• Perth
– Capital city
– 1.9 million people
Inflow to Perth Dams
Summer 2013/4 – Hot and Dry
Perth
Water Forever Whatever The Weather
Looking Forward
% IWSS Sources - 2012
% IWSS Sources - 2022
Desalination
Water efficiency
Secure Groundwater
Water Recycling Journey
1950’s –
Merredin
1992 – Albany
Tree Farm
2014 – Mulataga
Recycling scheme
2003 –
McGillivray Oval
Before 1990’s
2009 – Onsite
recycling
2000’s
2016 – GWR Stage 1
2010’s
2020’s
Today
2000’s – Multiple
regional recycling
irrigation schemes
2004 – Kwinana
Water Recycling
Plant
2010 - GWR trial
begins
2022 - Full GWR
Expansion
Increasing Water Recycling
Groundwater Replenishment
Trial Objectives
•
•
•
Technical feasibility
Policy and regulation
Community engagement and
discussion
Treatment Train
Wastewater Treatment
•Water suitable for discharge to ocean
Ultrafiltration – Removes:
•All suspended solids
•Crypto, giardia, all bacteria
•Larger virus
4
2
4
2
1
Reverse Osmosis – Removes:
•All viruses
•All chemicals larger than a water
molecule
Ultraviolet Treatment
•Final disinfection step
•Guarantee of bacteria and virus
removal
Groundwater Investigations
Objectives
•
•
•
•
Distance travelled
Pressure effects
Geochemical changes
Water Quality
22 Monitoring Bores
•
•
•
•
Background: Jan 09 – Oct 10
Ongoing sampling
Online monitoring: level, pH,
conductivity
Geochemistry & geophysical
investigations
Research & Technical Reference
Partners
•
•
CSIRO & Curtin University
DoW Hydrogeologists, Rockwater
Recharged Water - Distance Travelled
(to 31 December 2012)
Community Engagement
http://www.watercorporation.com.au/
Recycled Water for Drinking
Dec 2012: Complete GWR Trial
Jan 2013: Continue 1.5GL recharge
to Dec 14
Stage One: 7GL pa
Jun 2012: Planning & Construction
Jun 2016: Recharge & abstraction
Stage Two: +7 – 14 GL pa
Aug 2016: Construction start
Jun 2018: Recharge & abstraction
Stage Three: 7 – 14 GL pa
Aug 2020: Construction start
Jun 2022: Recharge & abstraction
Recycling – Part of our Water Future