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Curtin University
Curtin Water Quality Research Centre

Drinking Water Treatment

Current and Recent Projects

Chloramine Decay at Mundaring Weir

Key Contacts: Suzanne McDonald, Anna Heitz, Ina Kristiana, Cynthia Joll
Funded by: Water Corporation

It has been demonstrated that treating water with alum or ferric coagulation and BAC to remove natural organic matter (NOM) provides no measurable decrease in the chloramine decay of Mundaring Weir water. The aim of this project is to examine NOM characteristics that lead to chloramine decay. The studies to be undertaken will show which fraction of NOM (based on molecular size) needs to be removed to enable more effective treatment (i.e. reduction of chloramine decay caused by NOM).

The Causes and Prevention of Discoloured Water

Key Contacts: Anna Heitz, Cynthia Joll
Collaborators: Water Corporation, CSIRO and Dept of Civil Engineering, Curtin University
Funded by: Water Corporation

Discoloured or ‘dirty’ water, generally caused by mobilization of brown coloured sediments and deposits from within mains and pipes, is a relatively common problem for water supply utilities in Australia and in many other parts of the world. Water quality throughout the Perth distribution system has changed in recent years, through improvement of treatment processes and introduction of new water sources (e.g. desalination). The potential impacts of these water quality changes on the factors that cause dirty water (e.g. biofilm growth and detachment; manganese oxidation) are unknown. The primary objective of this project is to gain insights into the causes of dirty water in order to devise better strategies for prevention.