Consequences of pH change on wastewater depth filtration using a multimedia filter

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dc.contributor.authorNcube, Philani
dc.contributor.authorPidou, Marc
dc.contributor.authorStephenson, Tom
dc.contributor.authorJefferson, Bruce
dc.contributor.authorJarvis, Peter
dc.date.accessioned2017-12-18T14:48:06Z
dc.date.available2017-12-18T14:48:06Z
dc.date.issued2017-10-21
dc.description.abstractDifferent media materials in a multimedia filter have the potential to trap particles of different characteristics dependent on the media-suspension particle interactions. However, the removal of particles from wastewater secondary effluent using granular media filtration is relatively poorly understood because of the complexity of the wastewater matrix. Often the wastewater treatment process is liable to undergo pH changes due to removal or addition of chemicals in the treatment chain or from biological instability which in turn may alter the wastewater characteristics. Wastewater contains a mixture of organic and inorganic components, dissolved or particulate which may influence the aggregation and deposition of suspension solids during depth filtration. Changes in wastewater pH has the potential to change the wastewater matrix and media surface properties hence affecting aggregation and deposition in wastewater filtration. This study investigated how pH change affects wastewater filtration by monitoring zeta potential, aggregation and deposition of solids. The wastewater and filter media were also characterised over a range of pH from 1 to 13. Aggregation and deposition of wastewater solids was found to be most efficient near neutral pH. This was not concurrent with the conditions of lowest net charge in the system.en_UK
dc.identifier.citationPhilani Ncube, Marc Pidou, Tom Stephenson, Bruce Jefferson, Peter Jarvis, Consequences of pH change on wastewater depth filtration using a multimedia filter. Water Research, Volume 128, 2018, Pages 111-119en_UK
dc.identifier.cris18898456
dc.identifier.issn0043-1354
dc.identifier.urihttps://doi.org/10.1016/j.watres.2017.10.040
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12778
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectMultimediaen_UK
dc.subjectDepth filtrationen_UK
dc.subjectSurface chargeen_UK
dc.subjectZeta potentialen_UK
dc.subjectAggregationen_UK
dc.subjectDepositionen_UK
dc.titleConsequences of pH change on wastewater depth filtration using a multimedia filteren_UK
dc.typeArticleen_UK

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