CONVERSION OF A DECOMMISSIONED OXIDATION LAGOON INTO A FUNCTIONAL WETLAND

Authors

  • Jeram Mallis
  • Rhiannon Hamilton
  • Scott Rayburg
  • Melissa Naeve

Keywords:

Constructed Wetland, Recycled Water, Asset Recycling, Water Reuse

Abstract

This study proposes an ecologically valuable reuse for a decommissioned oxidation lagoon at
the Altona Treatment Plant in Victoria, Australia, which could be replicated elsewhere. Previous design
attempts for this project had failed due to the potential risk they posed to both the surrounding environment
and the Treatment Plant itself. Therefore one of the objectives was to undertake multiple assessments to
mitigate these risks. The most important of these, and the focus of this paper, was the determination of the
optimal source and quantity of water needed to sustain the wetland. Potential water sources included: water
from a nearby estuarine swamp; treated class C or class A effluent from the treatment plant; and rainfall-fed
runoff from the treatment plant site. Through an analysis of cost and quality of the available water sources, it
was determined that locally captured rainfall-fed runoff with Class-A recycled water as a backup supply was
the most feasible. In addition, hydrologic modelling revealed that this source could maintain flow in the
wetland year round, even in drought years.

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Published

2017-02-10

How to Cite

Jeram Mallis, Rhiannon Hamilton, Scott Rayburg, & Melissa Naeve. (2017). CONVERSION OF A DECOMMISSIONED OXIDATION LAGOON INTO A FUNCTIONAL WETLAND. GEOMATE Journal, 10(22), 2011–2017. Retrieved from https://geomatejournal.com/geomate/article/view/1987

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Articles