Two strategies for phosphorus removal from reject water of municipal wastewater treatment plant using alum sludge

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dc.contributor.author Yang, Y.
dc.contributor.author Zhao, Y.Q.
dc.contributor.author Babatunde, A.O.
dc.contributor.author Kearney, P.
dc.date.accessioned 2011-10-20T13:35:22Z
dc.date.available 2011-10-20T13:35:22Z
dc.date.copyright IWA Publishing 2009 en
dc.date.issued 2009-12
dc.identifier.citation Water Science and Technology en
dc.identifier.issn 0273-1223
dc.identifier.uri http://hdl.handle.net/10197/3255
dc.description.abstract In view of the well recognized need of reject water treatment in MWWTP (municipal wastewater treatment plant), this paper outlines two strategies for P removal from reject water using alum sludge, which is produced as by-product in drinking water treatment plant when aluminium sulphate is used for flocculating raw waters. One strategy is the use of the alum sludge in liquid form for co-conditioning and dewatering with the anaerobically digested activated sludge in MWWTP. The other strategy involves the use of the dewatered alum sludge cakes in a fixed bed for P immobilization from the reject water that refers to the mixture of the supernatant of the sludge thickening process and the supernatant of the anaerobically digested sludge. Experimental trials have demonstrated that the alum sludge can efficiently reduce P level in reject water. The co-conditioning strategy could reduce P from 597-675 mg P/L to 0.14-3.20 mg P/L in the supernatant of the sewage sludge while the organic polymer dosage for the conditioning of the mixed sludges would also be significantly reduced. The second strategy of reject water filtration with alum sludge bed has shown a good performance of P reduction. The alum sludge has P-adsorption capacity of 31 mg-P/g-sludge, which was tested under filtration velocity of 1.0 m/h. The two strategies highlight the beneficial utilization of alum sludge in wastewater treatment process in MWWTP, thus converting the alum sludge as a useful material, rather than a waste for landfill. en
dc.description.sponsorship Not applicable en
dc.format.extent 263560 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher IWA Publishing en
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.relation.requires Urban Institute Ireland Research Collection en
dc.rights The definitive peer-reviewed and edited version of this article is published in Water Science & Technology—WST Vol 60 No 12 pp 3181–3188 doi:10.2166/wst.2009.609 and is available at www.iwapublishing.com en
dc.subject Alum sludge en
dc.subject Reject water en
dc.subject Reuse en
dc.subject Phosphorus en
dc.subject Municipal wastewater treatment plant en
dc.subject.lcsh Water treatment plant residuals en
dc.subject.lcsh Phosphorus--Absorption and adsorption en
dc.subject.lcsh Water reuse en
dc.title Two strategies for phosphorus removal from reject water of municipal wastewater treatment plant using alum sludge en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions Publisher's version en
dc.internal.webversions http://www.iwaponline.com/wst/06012/3181/060123181.pdf en
dc.status Peer reviewed en
dc.identifier.volume 60 en
dc.identifier.issue 12 en
dc.identifier.startpage 3181 en
dc.identifier.endpage 3188 en
dc.identifier.doi 10.2166/wst.2009.609
dc.neeo.contributor Yang|Y.|aut| en
dc.neeo.contributor Zhao|Y.Q.|aut| en
dc.neeo.contributor Babatunde|A.O.|aut| en
dc.neeo.contributor Kearney|P.|aut| en
dc.description.othersponsorship Environmental Protection Agency en
dc.description.othersponsorship The Program for Changjiang Scholars and Innovative Research Team in University (Project NO. PCSIRT0853, Ministry of Education of the People's Republic of China) en
dc.description.admin ke, sp - kpw19/10/11 en


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