Odourous emissions from sewer networks and wastewater treatment plants (WWTPs) can significantly impact a local population. Sampling techniques such as wind tunnels and flux hood chambers are traditionally used to collect area source samples for subsequent quantification of odour emission rates using dilution olfactometry, however these methods are unsuitable for assessing liquid samples from point sources due to the large liquid volumes required. To overcome this limitation, a gas phase sample preparation method was developed for assessing the total Odour Emission Ability (OEA) from a liquid sample. The method was validated using two volatile organic sulphur compounds (VOSCs), dimethyl-trisulphide (DMTS) and bismethylthiomethane (BMTM) that are frequently detected from sewers and WWTPs and are relatively stable compared with common VOSCs like mercaptan or methyl mercaptan. The recovery rates of DMTS and BMTM were quantified by injecting a known volume of a standard liquid sample into Tedlar bags using a static injection and a dynamic injection methodology. It was confirmed that both dynamic and static injection methods at ambient condition achieved high recovery rates with no need to consider increasing evaporation by elevating the temperature. This method can also be used to assess odour removal effectiveness of liquids by comparing the OEA before and after the treatment tests. Two application examples were presented.

Item Type:	Refereed Article
Keywords:	odour measurement, odour treatment, odours, wastewater treatment
Research Division:	Engineering
Research Group:	Chemical engineering
Research Field:	Wastewater treatment processes
Objective Division:	Commercial Services and Tourism
Objective Group:	Water and waste services
Objective Field:	Water recycling services (incl. sewage and greywater)
UTAS Author:	Sivret, E (Dr Eric Sivret)
ID Code:	140890
Year Published:	2012
Web of Science® Times Cited:	12
Deposited By:	Engineering
Deposited On:	2020-09-14
Last Modified:	2020-10-09
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