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Article: Anaerobic treatment of Hong Kong leachate followed by chemical oxidation

TitleAnaerobic treatment of Hong Kong leachate followed by chemical oxidation
Authors
Issue Date2005
PublisherI W A Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst
Citation
Water Science And Technology, 2005, v. 52 n. 10-11, p. 41-49 How to Cite?
AbstractLandfill leachate of Hong Kong was first treated by the upflow anaerobic sludge blanket (UASB) process. At 37°C, pH 7.1-8.5 and a HRT of 5.1 -6.6 days, the process removed 66-90% of COD in the leachate for loading rates of 1-2.4 g-COD/l day depending on the strength of landfill leachate. The final effluent contained 1440-1910 mg-COD/l and 70-91 mg-BOD/l. About 92.5% of the total COD removed was converted to methane and the rest was converted to biomass with an average net growth yield of 0.053 g-VSS/g-COD-removed. The granules developed in the UASB reactor were 0.5-1.5 mm in size and exhibited good settleability. The UASB effluent was then further polished by two oxidation processes. The UASB-ozonation process removed 93.0% of the 12900 mg/l of COD from the raw leachate. The UASB-Fenton-ozonation process improved the COD remova l efficiency to 99.3%. The final effluent had only 85 mg/l of COD and 10 mg/l of BOD5. Ozonation was most effectively conducted at pH 7-8 with the addition of 300 mg/l of H2O2 and for the duration of 30 min. Ozonation also significantly improved the biodegradability of the organic residues. Nearly 50% of these residues could be used as carbon source in denitrification. © IWA Publishing 2005.
Persistent Identifierhttp://hdl.handle.net/10722/71603
ISSN
2015 Impact Factor: 1.064
2015 SCImago Journal Rankings: 0.469
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFang, HHPen_HK
dc.contributor.authorLau, IWCen_HK
dc.contributor.authorWang, Pen_HK
dc.date.accessioned2010-09-06T06:33:29Z-
dc.date.available2010-09-06T06:33:29Z-
dc.date.issued2005en_HK
dc.identifier.citationWater Science And Technology, 2005, v. 52 n. 10-11, p. 41-49en_HK
dc.identifier.issn0273-1223en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71603-
dc.description.abstractLandfill leachate of Hong Kong was first treated by the upflow anaerobic sludge blanket (UASB) process. At 37°C, pH 7.1-8.5 and a HRT of 5.1 -6.6 days, the process removed 66-90% of COD in the leachate for loading rates of 1-2.4 g-COD/l day depending on the strength of landfill leachate. The final effluent contained 1440-1910 mg-COD/l and 70-91 mg-BOD/l. About 92.5% of the total COD removed was converted to methane and the rest was converted to biomass with an average net growth yield of 0.053 g-VSS/g-COD-removed. The granules developed in the UASB reactor were 0.5-1.5 mm in size and exhibited good settleability. The UASB effluent was then further polished by two oxidation processes. The UASB-ozonation process removed 93.0% of the 12900 mg/l of COD from the raw leachate. The UASB-Fenton-ozonation process improved the COD remova l efficiency to 99.3%. The final effluent had only 85 mg/l of COD and 10 mg/l of BOD5. Ozonation was most effectively conducted at pH 7-8 with the addition of 300 mg/l of H2O2 and for the duration of 30 min. Ozonation also significantly improved the biodegradability of the organic residues. Nearly 50% of these residues could be used as carbon source in denitrification. © IWA Publishing 2005.en_HK
dc.languageengen_HK
dc.publisherI W A Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwsten_HK
dc.relation.ispartofWater Science and Technologyen_HK
dc.subject.meshAnaerobiosisen_HK
dc.subject.meshBiodegradation, Environmentalen_HK
dc.subject.meshBiomassen_HK
dc.subject.meshBioreactorsen_HK
dc.subject.meshCarbon - chemistry - metabolismen_HK
dc.subject.meshHong Kongen_HK
dc.subject.meshHydrogen Peroxide - chemistryen_HK
dc.subject.meshHydrogen-Ion Concentrationen_HK
dc.subject.meshMethane - metabolismen_HK
dc.subject.meshNitrites - chemistry - metabolismen_HK
dc.subject.meshOrganic Chemicals - isolation & purification - metabolismen_HK
dc.subject.meshOxidation-Reductionen_HK
dc.subject.meshOxygen - chemistry - metabolismen_HK
dc.subject.meshOzone - chemistryen_HK
dc.subject.meshRefuse Disposal - methodsen_HK
dc.subject.meshWater Purification - methodsen_HK
dc.titleAnaerobic treatment of Hong Kong leachate followed by chemical oxidationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0273-1223&volume=52&issue=10-11&spage=41&epage=49&date=2005&atitle=Anaerobic+treatment+of+Hong+Kong+leachate+followed+by+chemical+oxidationen_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid16459775-
dc.identifier.scopuseid_2-s2.0-31844437774en_HK
dc.identifier.hkuros120532en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-31844437774&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume52en_HK
dc.identifier.issue10-11en_HK
dc.identifier.spage41en_HK
dc.identifier.epage49en_HK
dc.identifier.isiWOS:000234617700005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK
dc.identifier.scopusauthoridLau, IWC=7006768100en_HK
dc.identifier.scopusauthoridWang, P=7407616360en_HK

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