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dc.contributor.authorLi, M
dc.contributor.authorZhang, H
dc.contributor.authorLemckert, C
dc.contributor.authorStratton, H
dc.contributor.editorWeber, T
dc.contributor.editorMcPhee, MJ
dc.contributor.editorAnderssen, RS
dc.date.accessioned2018-03-07T04:12:50Z
dc.date.available2018-03-07T04:12:50Z
dc.date.issued2015
dc.identifier.isbn9780987214355
dc.identifier.urihttp://hdl.handle.net/10072/123395
dc.description.abstractWaste stabilisation ponds (WSPs) are widely used for wastewater treatment throughout the world. They are shallow constructed basins, typically located at the end of a treatment plant, that use natural microbiological, photosynthetic, biochemical, physico-chemical and hydrodynamic processes to generate a reduction of organic matters and pathogenic organisms in wastewater (Watters et al., 1973). They require little technical attention during operation, and are less demanding in terms of construction cost and energy consumption than other engineered wastewater treatment systems. Practical experience and research over the past few decades have established that hydrodynamics is one of the crucial factors determining WSP’s overall treatment performance. The Department of Environment and Planning (1992) in the state of Tasmania surveyed 39 wastewater treatment systems and reported that 74% of the pond systems failed to achieve the discharge requirements, and it is due to the hydraulic problems including short-circuiting, stratification in hot Australian climates, and stagnant fluid in dead zones. Therefore, it is of primary importance that WSP’s hydrodynamic performance be improved before WSP treatment efficiency can be guaranteed. A substantial number of numerical modelling studies have been undertaken to look into WSP hydrodynamics, both two-dimensionally and three-dimensionally. It is the ultimate goal of this study to use numerical modelling techniques to investigate measures to improve WSP hydrodynamic performance, consequently to propose retrofitting design. A validated three-dimensional numerical model using MIKE 3 by DHI (Danish Hydraulic Institute) was developed to study a typical pond with a dimension of 50 m (length) by 20 m (width) by 1.5 m (depth). The retrofitting scheme was proposed by placing baffles in the pond with different geometric ratios: the ratio of baffle length Lb to the width of the pond W: Lb/W, and the ratio of baffle spacing Δb to the length of the pond L: Δb/L. For generalised design guidance, baffles positively contribute to the hydraulic efficiency for ponds with a relatively small L/W ratio. Placing 8 baffles in a pond with L/W = 1.6 results in a λ (hydraulic efficiency) = 0.83 as oppose to λ = 0.23 if the pond is not baffled. However, ponds do not benefit from retrofitting baffles if their L/W ratios are large. Ultimately, this study is to provide regulators, decision makers, water managers and operators with information and tools to best operate and manage WSPs, to protect public and environmental health and optimise uses of the treated water.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherModelling and Simulation Society of Australia and New Zealand
dc.publisher.placeAustralia
dc.publisher.urihttp://www.mssanz.org.au/modsim2015/
dc.relation.ispartofconferencename21st International Congress on Modelling and Simulation (MODSIM) held jointly with the 23rd National Conference of the Australian-Society-for-Operations-Research / DSTO led Defence Operations Research Symposium (DORS
dc.relation.ispartofconferencetitle21ST INTERNATIONAL CONGRESS ON MODELLING AND SIMULATION (MODSIM2015)
dc.relation.ispartofdatefrom2015-11-29
dc.relation.ispartofdateto2015-12-04
dc.relation.ispartoflocationGold Coast, AUSTRALIA
dc.relation.ispartofpagefrom2507
dc.relation.ispartofpagefrom7 pages
dc.relation.ispartofpageto2513
dc.relation.ispartofpageto7 pages
dc.subject.fieldofresearchEnvironmental Engineering not elsewhere classified
dc.subject.fieldofresearchcode090799
dc.titleImproving hydrodynamic performance of waste stabilisation ponds using three-dimensional numerical models
dc.typeConference output
dc.type.descriptionE1 - Conferences
dc.type.codeE - Conference Publications
dc.description.versionVersion of Record (VoR)
gro.facultyGriffith Sciences, Griffith School of Engineering
gro.rights.copyright© 2015 Modellling & Simulation Society of Australia & New Zealand. The attached file is reproduced here in accordance with the copyright policy of the publisher. For information about this conference please refer to the conference’s website or contact the author(s).
gro.hasfulltextFull Text
gro.griffith.authorStratton, Helen M.
gro.griffith.authorLemckert, Charles J.
gro.griffith.authorZhang, Hong
gro.griffith.authorLi, Miao


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