title: Odour reduction strategies for biosolids produced from a Western Australian wastewater treatment plant: results from Phase I laboratory trials.
abstract: This study investigated sources of odours from biosolids produced from a Western Australian wastewater treatment plant and examined possible strategies for odour reduction, specifically chemical additions and reduction of centrifuge speed on a laboratory scale. To identify the odorous compounds and assess the effectiveness of the odour reduction measures trialled in this study, headspace solid-phase microextraction gas chromatography-mass spectrometry (HS SPME-GC-MS) methods were developed. The target odour compounds included volatile sulphur compounds (e.g. dimethyl sulphide, dimethyl disulphide and dimethyl trisulphide) and other volatile organic compounds (e.g. toluene, ethylbenzene, styrene, p-cresol, indole and skatole). In our laboratory trials, aluminium sulphate added to anaerobically digested sludge prior to dewatering offered the best odour reduction strategy amongst the options that were investigated, resulting in approximately 40% reduction in the maximum concentration of the total volatile organic sulphur compounds, relative to control.
authors.affiliation: Curtin Water Quality Research Centre (CWQRC), Department of Chemistry, Curtin University, Resources and Chemistry Precinct, GPO Box U1987, Perth, 6845, Western Australia E-mail: Y.Gruchlik@curtin.edu.au.
authors.forename: Yolanta
authors.initials: Y
authors.lastname: Gruchlik
authors.affiliation: Department of Civil Engineering, Curtin University, GPO Box U1987, Perth, 6845, Western Australia.
authors.forename: Anna
authors.initials: A
authors.lastname: Heitz
authors.affiliation: Curtin Water Quality Research Centre (CWQRC), Department of Chemistry, Curtin University, Resources and Chemistry Precinct, GPO Box U1987, Perth, 6845, Western Australia E-mail: Y.Gruchlik@curtin.edu.au.
authors.forename: Cynthia
authors.initials: C
authors.lastname: Joll
authors.affiliation: Curtin Water Quality Research Centre (CWQRC), Department of Chemistry, Curtin University, Resources and Chemistry Precinct, GPO Box U1987, Perth, 6845, Western Australia E-mail: Y.Gruchlik@curtin.edu.au.
authors.forename: Hanna
authors.initials: H
authors.lastname: Driessen
authors.affiliation: Curtin Water Quality Research Centre (CWQRC), Department of Chemistry, Curtin University, Resources and Chemistry Precinct, GPO Box U1987, Perth, 6845, Western Australia E-mail: Y.Gruchlik@curtin.edu.au.
authors.forename: Lise
authors.initials: L
authors.lastname: Fouché
authors.affiliation: Water Corporation of Western Australia, 629 Newcastle Street, Leederville, WA 6007.
authors.forename: Nancy
authors.initials: N
authors.lastname: Penney
authors.affiliation: Curtin Water Quality Research Centre (CWQRC), Department of Chemistry, Curtin University, Resources and Chemistry Precinct, GPO Box U1987, Perth, 6845, Western Australia E-mail: Y.Gruchlik@curtin.edu.au.
authors.forename: Jeffrey W A
authors.initials: JW
authors.lastname: Charrois
mesh_terms: D006838:Hydrocarbons / Q000032:analysis; D009812:Odorants / Q000032:analysis / Q000517:prevention & control; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000737:chemistry / Q000382:microbiology*; D062611:Solid Waste / Q000032:analysis*; D013440:Sulfides / Q000032:analysis; D014835:Volatilization; D062065:Wastewater / Q000737:chemistry / Q000382:microbiology*; D018508:Water Purification / Q000379:methods*
chemical_list: D006838:Hydrocarbons; D012722:Sewage; D062611:Solid Waste; D013440:Sulfides; D062065:Wastewater