Demonstration of robust water recycling

Brief description

A demonstration plant was operated in Hobart, Tasmania as part of a project to develop a robust (minimal operator involvement) water recycling process  which would produce drinking quality water from wastewater, with a saline effluent suitable for release into a pristine marine environment

Secondary treated wastewater underwent a number of advanced treatment technologies: ozonation, ceramic microfiltration, biological activated carbon filtration, reverse osmosis, ultra-violet disinfection, calcite contactor and chlorine disinfection.   

The aims of the trial were to demonstrate reliability of the treatment plant with regard to product water quality, effluent water quality, energy consumption and ability of the plant to operate unattended.  

In addition to a range of research reports, two spreadsheets of data from the trial are available

1) The monitoring parameters for the various plant processes over a 10 month (August 2014 to June 2015) running period.  Measures included turbidity, PH, water temperature, ozone and chlorine dose, feedwater and permeate flow, pressure indicators, conconductivity, UV intensity and transmittance.

2) Sampled measurements of water quality as it progressed through the plant, including monitoring of pathogens, disinfection by-products and chemicals of concern.  Bioassays for measurement of water toxicity/bioactivity were also undertaken.