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Pickling waste dosing to control excessive hydrogen sulfide in anaerobic digester and its impact on biosolids reuse

Charles, W., Ho, G.ORCID: 0000-0001-9190-8812 and Kayaalp, A. (2008) Pickling waste dosing to control excessive hydrogen sulfide in anaerobic digester and its impact on biosolids reuse. In: IWA World Water Congress, 7 - 12 September, Vienna, Austria.

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Abstract

The Woodman Point wastewater treatment plant (WWTP) in Western Australia experiences excessive hydrogen sulfide (H2S) levels in biogas from anaerobic digesters. It currently employs an iron-based chemical oxidant gas scrubber to remove H2S from the biogas. The use of this scrubbing is expensive as well as labour intensive. Direct dosing of the anaerobic digesters with ferric chloride (FeCl3) can control H2S emissions (Charles et al., 2006). However, chemical is expensive. Pickling waste, from galvanising industry available locally, contains high iron contents that can be used as a cheap alternative Fe3+ source to precipitate soluble sulfide. This study investigated the feasibility of using pickling waste as an economic form of iron salt to control H2S emissions at Woodman Point WWTP and assessed its impact on biosolids reuse.

Item Type: Conference Item
Murdoch Affiliation: School of Environmental Science
URI: http://researchrepository.murdoch.edu.au/id/eprint/16619
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