ORCID Profile
0000-0002-6381-7400
Current Organisations
Australian National University
,
RMIT University
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Publisher: Elsevier BV
Date: 11-2016
DOI: 10.1016/J.WATRES.2016.08.066
Abstract: The injection of stormwater into aquifers for storage and recovery during high water demand periods is a promising technology for augmenting conventional water reserves. Limited information exists regarding the potential impact of aquifer treated stormwater in distribution system infrastructure. This study describes a one year pilot distribution pipe network trial to determine the biofouling potential for cement, copper and polyvinyl chloride pipe materials exposed to stormwater stored in a limestone aquifer compared to an identical drinking water rig. Median alkalinity (123 mg/L) and colour (12 HU) in stormwater was significantly higher than in drinking water (82 mg/L and 1 HU) and pipe discolouration was more evident for stormwater s les. X-ray Diffraction and Fluorescence analyses confirmed this was driven by the presence of iron rich amorphous compounds in more thickly deposited sediments also consistent with significantly higher median levels of iron (∼0.56 mg/L) in stormwater compared to drinking water (∼0.17 mg/L). Water type did not influence biofilm development as determined by microbial density but faecal indicators were significantly higher for polyvinyl chloride and cement exposed to stormwater. Treatment to remove iron through aeration and filtration would reduce the potential for sediment accumulation. Operational and verification monitoring parameters to manage scaling, corrosion, colour, turbidity and microbial growth in recycled stormwater distribution networks are discussed.
Publisher: IWA Publishing
Date: 09-07-2014
DOI: 10.2166/WST.2014.298
Abstract: There is currently a need for a simple, accurate and reproducible method that quantifies the amount of dissolved methane in wastewater in order to realize the potential methane that can be recovered and account for any emissions. This paper presents such a method, using gas chromatography with flame ionization detection fitted with a GS-Gas PRO column coupled with a headspace auto s ler. A practical limit of detection for methane of 0.9 mg L−1, with a retention time of 1.24 min, was obtained. It was found that the reproducibility and accuracy of the method increased significantly when s les were collected using an in-house constructed bailer s ling device and with the addition of 100 μL hydrochloric acid (HCl) and 25% sodium chloride (NaCl) and sonication for 30 min prior to analysis. Analysis of wastewater s les and wastewater sludge collected from a treatment facility were observed to range from 12.51 to 15.79 mg L−1 (relative standard deviation (RSD) 8.1%) and 17.56 to 18.67 mg L−1 (RSD 3.4%) respectively. The performance of this method was validated by repeatedly measuring a mid-level standard (n = 8 10 mg L−1), with an observed RSD of 4.6%.
Publisher: IWA Publishing
Date: 22-10-2014
DOI: 10.2166/WCC.2013.070
Abstract: The decentralisation of wastewater treatment operations exposes several environmental consequences. This includes the fugitive emission of two greenhouse gases, nitrous oxide (N2O) and methane (CH4). The magnitude of these emissions is presently unclear. Therefore, it is necessary to measure the extent of the release of N2O and CH4 gas from decentralised wastewater treatment plants (WWTPs) in order to quantify the impact these emissions will have on the environment and to determine strategies to reduce them. Specifically, this pilot study employed an online non-dispersive infrared (NDIR) gas analyser and flux hood to evaluate the spatial and short-term temporal distribution of N2O and CH4 flux over half a day, from an aeration tank system within a decentralised sewage mining plant. The aeration tank system was able to emit N2O fluxes of up to 11.6 g N2O m−2 day−1 and CH4 fluxes of up to 1.1 g CH4 m−2 day−1. The N2O and CH4 fluxes varied rapidly over short time intervals in the same position (as high as 45% for N2O and 36% for CH4) and could almost triple in magnitude between two different positions across the surface of the aeration tank (within a distance no greater than 1.5 to 2 m).
Publisher: Springer Science and Business Media LLC
Date: 23-04-2019
Publisher: Elsevier BV
Date: 09-2017
Publisher: American Society of Civil Engineers
Date: 28-05-2013
Publisher: Elsevier BV
Date: 05-2013
Publisher: Springer Science and Business Media LLC
Date: 25-10-2019
Publisher: Elsevier BV
Date: 05-2018
Publisher: Springer Science and Business Media LLC
Date: 28-11-2019
Location: Australia
No related grants have been discovered for Nigel Goodman.