This document outlines a project to develop a greywater test rig at Murdoch University. The project aims to serve as a research and demonstration tool for students and establish baseline performance data for greywater systems. It will involve designing and assembling a system using synthetic greywater that can be monitored. There are knowledge gaps around quantifying greywater output and losses, advanced treatment options, and health risks that this project seeks to address through ongoing testing and industry consultation. The test rig will help provide credible information to address these gaps and support expanded greywater reuse in Western Australia.

1. GREYWATER:GENISYS
ASHWIN NAYAK
MURDOCH UNIVERSITY (ENVIRONMENTAL ENGINEERING) | JOSH BYRNE AND ASSOCIATES

2. CONTENT OUTLINE
Project aims
Background
2
1.INTRODUCTION
2. REVIEW
3. TECHNICAL CONTENT
Address knowledge gaps
Need for credible information

3. Project Aims
 Greywater Test Rig:
Serve as research and demonstration tool for
future students
 Individual Objectives:
Design Intent
Operational
Establish baseline data about performance
3
PROJECT PARTNERS

4. Background
Source:
Indoor wastewater excluding toilet and kitchen
4
1. Greywater
Diversion Devices (GDD)
Treatment: Primary
End Use: Irrigation
2. Greywater
Treatment Systems (GTS)
Treatment: Secondary
End Use: Toilet Flushing
 System Information:
Greywater PS Plug & Play by AWWS
Residential irrigation
Immediate Reuse
EASE OF MAINTENANCE
COST AND ENERGY USAGE
Treatment Options

5. CONTENT OUTLINE
 Project aims
 Background
5
1.INTRODUCTION
2. REVIEW
3. TECHNICAL CONTENT
Need for credible information

6. THE CASE FOR GREYWATER
Perth’s Residential Water
Use Breakdown by area (%)
Source: Water Corporation. 2010. Perth Residential Water Use
Study 2008/2009.
Scheme water use by sector (%)
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Responses

7. 7
OR…
THE CASE FOR GREYWATER PT 2
Benefits:
 Unrestricted
 Dry periods
 Long run
Guidelines:
 Sub-surface irrigation
 Friendly products
 Appropriately sized
Fact:
40% water from desalination

8. FURTHER RESEARCH
Knowledge Gaps:
 Quantify greywater output to garden
 Quantify greywater loss to sewer
 Life cycle analysis
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Difficult to determine in real
household systems
 Advanced treatment
(Source Friedler and Hadari 2006; Nolde 2000)
 Municipal wastewater flows
(Source Friedler et al 2012; Penn et al 2013)
 Sanitary Risks
(Source Gross et al 2015; Memon and Ward 2015)
GTS
Western Australia
 Rowlands 2003| Ng 2004 | Josh Byrne 2007 -

9. CONTENT OUTLINE
 Project aims
 Background
9
1.INTRODUCTION
2. REVIEW
3. TECHNICAL CONTENT
Need for credible information
Address knowledge gaps

10. BACKGROUND METHODS
Key Features
 Synthetic Greywater
 Monitoring arrangements
10
Method:
 Literature & Policy Review
 Stakeholder Engagement
 System Design & Assembly
 Testing

11. RESULTS
11
Problem:
Quantifying Greywater
Output
Water Meter
Proposed Alternative:
Power / Greywater
(W/L) co-relation
System

12. RESULTS PART 2 12
Knowledge Gaps
 Scheme Water Savings
 Filter Clogging
 System Sizing
 Life Cycle Assesment
 Safe Reuse
Source: Greywater and Wastewater
Industry Group
Action Plan
 Ongoing Research
 Portable
 Industry Consultations
 Expansion

13. CONCLUSION
 Project aims
 Background
13
1.INTRODUCTION
2. REVIEW
3. TECHNICAL CONTENT
Address knowledge gaps
Need for credible information

14. ACKNOWLEDGEMENTS 14
Dr Martin Anda Sam Milani & Bernard Devera Dr Stewart Dallas
QUESTIONS
PROJECT PARTNERS

15. References
 Byrne, J., J. Hunt, M. Anda, and G. Ho. 2008.
Meeting plant water requirements with
greywater.
 Friedler, E., and M. Hadari. "Economic
feasibility of on-site greywater reuse in multi-
storey buildings." Desalination 190, no. 1 (2006):
221-234.
 Friedler, Eran, Matan Hadari, and Roni Penn.
2012. Evaluation of the effects of greywater
reuse on domestic wastewater quality and
quantity. Urban Water Journal 9 (3): 137-48.
 Gross, Amit, Adi Maimon, Yuval Alfiya, and
Eran Friedler. Greywater Reuse. CRC Press,
2015.
 Nolde, Erwin. "Greywater reuse systems for
toilet flushing in multi-storey buildings–over ten
years experience in Berlin." Urban water 1, no.
4 (2000): 275-284.
 NG, MAYLE. 2004. "Household Greywater Reuse
for Garden Irrigation in Perth." Environmental
Engineering Project 640 .
 Memon, Fayyaz Ali, editor, and Sarah Ward
editor. 2015.Alternative water supply systems.
London: IWA Publishing.
 Penn, Roni, Eran Friedler, and Avi Ostfeld. 2013.
Multi-objective evolutionary optimization for
greywater reuse in municipal sewer systems.
Water Research 47 (15): 5911-20.
 Rowlands, David. 2003. "Hydrological
Modelling of the 72 Keightly Road Greywater
Re-use Project." PhD diss., University of Western
Australia
 Water Corporation. 2010. Perth Residential
Water Use Study 2008/2009.
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