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Conceptual expansion and integration of Murdoch University eastern precinct green infrastructure to South Street campus

Wroe, Jennifer (2015) Conceptual expansion and integration of Murdoch University eastern precinct green infrastructure to South Street campus. Honours thesis, Murdoch University.

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Abstract

Murdoch University is planning a new mixed use campus development on undeveloped university land which is designed to expand research activities and education programs. The inclusion of a decentralised wastewater treatment plant has the ability to reduce demand on local resources, minimise resource waste and provide multiple educational and research opportunities for Murdoch University.

The aim of this report is to provide a conceptual framework for water recycling and reclamation for Murdoch University Eastern Precinct and its expansion and integration with South Street core campus by way of:

Literature review of concepts relating to decentralised recycled water systems and the current legislative frameworks.

Assessing suitable wastewater recycling technologies using Multiple Criteria Decision Analysis; and
Technology and economic assessment.

Review of literature found that South-West of Western Australia is increasingly facing challenges to water supply due to a drying climate and increased water demand due to rapid population growth. There is a need for demonstration projects to facilitate an increase in the uptake of decentralised wastewater recycling systems in Western Australia. Demonstration projects will contribute to the improvement of current regulatory processes and support a shift towards more sustainable urban water practices.

The inclusion of a decentralised wastewater treatment plant in the Murdoch University Eastern Precinct development has the ability to reduce demand on local resources, minimise resource waste and provide multiple educational and research opportunities for Murdoch University.

Multiple Criteria Decision Analysis was used to determine wastewater recycling technologies suitable to the Murdoch University Eastern Precinct. Upflow Anaerobic Sludge Blanket Reactor (UASB) was found to be the optimal option for anaerobic technology and Intensified Constructed Wetlands (ICW) ranked higher than activated sludge, biofilm and membrane technologies.

Discounted payback period for UASB & ICW combination was 29 years and 6 months. For MBR and SAF the discounted payback periods were 26 years and 11 months and 22 years and 3 months respectively.

The conceptual design with the use of combined UASB and ICW showed that this configuration delivers high quality water with the addition of energy recovery benefits. It is estimated that the system would produce 117m3 of biogas per day providing 123.2kWh/day in electricity production.

The conceptual design also provides additional benefits such as energy recovery, the potential for stormwater reuse and the potential for reuse of the sludge with a composting process that makes use of the university greenwaste as a bulking agent.

Publication Type: Thesis (Honours)
Murdoch Affiliation: School of Engineering and Information Technology
Supervisor: Anda, Martin
URI: http://researchrepository.murdoch.edu.au/id/eprint/29902
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