An innovative solution for managing waterworks sludge : developing an alum sludge-based multi-stage constructed wetland system for wastewater treatment

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dc.contributor.author Zhao, Y.Q.
dc.contributor.author Babatunde, A.O.
dc.contributor.author Zhao, X.H.
dc.date.accessioned 2011-08-30T13:48:19Z
dc.date.available 2011-08-30T13:48:19Z
dc.date.copyright 2009 ASTM en
dc.date.issued 2009-06
dc.identifier.citation Journal of ASTM International en
dc.identifier.issn 1546-962X
dc.identifier.uri http://hdl.handle.net/10197/3129
dc.description.abstract Waterworks sludge continues to be an inescapable by-product of the potable water treatment process. Accordingly, final disposal of the sludge remains one of the most significant pressing problems for the potable water treatment industry. The possibility of reusing the sludge as a main substrate in a novel constructed wetland system was investigated in this study. Results show that significant phosphorus (P) and other pollutants removal were achieved in the system. With a mean influent BOD5 (5-day biochemical oxygen demand) and COD (chemical oxygen demand) levels of 392.7 mg/l and 579.8 mg/l, respectively, a removal efficiency of 90.6 % and 71.8 %, respectively, was obtained. P removal was however exceptionally high despite the high influent mean P level of 45.3 mg-P/l, which is about 2-3 times the level of P commonly found in sewage. This is attributable to the P adsorption capacity of the alum sludge and this highlights the benefits of its reuse in the system. The paper presents and discusses the findings from a laboratory scale research, which has potential for further large scale implementation. en
dc.description.sponsorship Other funder en
dc.format.extent 188678 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher ASTM en
dc.relation.requires Architecture, Landscape & Civil Engineering Research Collection en
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.relation.requires Urban Institute Ireland Research Collection en
dc.rights This is a preprint of an article published in Journal of ASTM International, 6 (6): 395-405, available at http://www.astm.org/DIGITAL_LIBRARY/JOURNALS/JAI/PAGES/JAI102168.htm en
dc.subject Aluminium en
dc.subject Alum sludge en
dc.subject Constructed wetland en
dc.subject Phosphorus en
dc.subject Reuse en
dc.subject Wastewater treatment en
dc.subject.lcsh Water treatment plant residuals en
dc.subject.lcsh Constructed wetlands en
dc.subject.lcsh Phosphorus--Absorption and adsorption en
dc.subject.lcsh Water--Purification en
dc.title An innovative solution for managing waterworks sludge : developing an alum sludge-based multi-stage constructed wetland system for wastewater treatment en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions Publisher's version en
dc.internal.webversions http://dx.doi.org/10.1520/JAI102168 en
dc.status Peer reviewed en
dc.identifier.volume 6 en
dc.identifier.issue 6 en
dc.identifier.startpage 395 en
dc.identifier.endpage 405 en
dc.identifier.doi 10.1520/JAI102168
dc.neeo.contributor Zhao|Y.Q.|aut| en
dc.neeo.contributor Babatunde|A.O.|aut| en
dc.neeo.contributor Zhao|X.H.|aut| en
dc.description.othersponsorship Environmental Protection Agency en


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