Withstanding shock loads in activated sludge treatment by pre-exposure to low H2S concentrations Burgess, J. E. en_US Stuetz, Richard M en_US 2021-11-25T13:47:36Z 2021-11-25T13:47:36Z 2003 en_US
dc.description.abstract An activated sludge pilot plant was used to acclimatise sludge to a low dose of H2S gas. Sludge samples from different types of treatment works were compared with acclimatised and unacclimatised sludges using batch absorption tests. The effects of sludge source and acclimatisation on the ability of the sludge to withstand shock loads of 50 ml l-1 H2S were evaluated. Sludge that had been acclimatised to 5 ml l-1 H2S in the air supply removed 70% of a 50 ml l-1 load in a batch reactor after three sludge ages of acclimatsation. Pre-exposure to low H2S concentrations enabled the bacterial community to maintain a sufficient sulphide-degrading population to retain acclimatisation and degrade subsequent high loads which are toxic to unacclimatised sludge. Acclimatisation to H2S is therefore mainly an effect of selection pressure on the mixed bacterial population, which suggests that the H2S removal capacity of different types of activated sludge will converge after acclimatisation, irrespective of their initial degradative abilities en_US
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri en_US
dc.source Legacy MARC en_US
dc.title Withstanding shock loads in activated sludge treatment by pre-exposure to low H2S concentrations en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.identifier.doiPublisher en_US
unsw.relation.faculty Engineering
unsw.relation.ispartofjournal Environmental Technology en_US
unsw.relation.originalPublicationAffiliation Burgess, J. E. en_US
unsw.relation.originalPublicationAffiliation Stuetz, Richard M, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US School of Civil and Environmental Engineering *
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