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Conference Paper: Anoxic treatment of low-strength wastewater by immobilized sludge

TitleAnoxic treatment of low-strength wastewater by immobilized sludge
Authors
KeywordsDenitrification
Immobilization
Low-strength
m-cresol
PAC
Phenol
Polyvinyl alcohol
Wastewater
Issue Date1997
PublisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst
Citation
The 6th IAWQ Asia-Pacific Regional Conference, Seoul, Korea, 20-23 May 1997. In Water Science And Technology, 1997, v. 36 n. 12, p. 135-141 How to Cite?
AbstractLow levels of phenol and m-cresol were effectively removed from wastewater under anoxic condition using immobilized sludge. A 138-day experiment was conducted using wastewater containing NO3 --N (22.3 mg·l-1), phenol (10 mg·l-1) and m-cresol (5 mg·l-1) at 30°C using sucrose (50 mg·l-1) as co-substrate in an upflow reactor packed with polyvinyl alcohol (PVA) beads entrapped with anoxic sludge and powdered activated carbon (PAC). Throughout the experiment, phenol and m-cresol in the effluent were below the detectable level of 1.0 mg·l-1 even when HRT (hydraulic retention time) was as low as 0.55 hour. The effluent quality in general decreased with HRT. At 5.9 hours of HRT, the reactor effluent contained 5.9 mg·l-1 of COD (chemical oxygen demand) and 1.3 mg·l-1 of NO3 --N; but at 0.55 hour, they were, 17.3 and 5.7 mg·l-1, respectively. The effluent COD was from the unidentified soluble microbial products. Methane was not produced after the startup, and all PVA beads were not disintegrated. Results of a batch test showed that organic substrate was preferably consumed by the denitrify bacteria in favor of methane-producing bacteria. Scanning electron micrographs showed that most bacteria were populated on the bead surface due to the availability of nitrate and substrate.
Persistent Identifierhttp://hdl.handle.net/10722/70791
ISSN
2015 Impact Factor: 1.064
2015 SCImago Journal Rankings: 0.469
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, GMen_HK
dc.contributor.authorFang, HHPen_HK
dc.date.accessioned2010-09-06T06:26:09Z-
dc.date.available2010-09-06T06:26:09Z-
dc.date.issued1997en_HK
dc.identifier.citationThe 6th IAWQ Asia-Pacific Regional Conference, Seoul, Korea, 20-23 May 1997. In Water Science And Technology, 1997, v. 36 n. 12, p. 135-141en_HK
dc.identifier.issn0273-1223en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70791-
dc.description.abstractLow levels of phenol and m-cresol were effectively removed from wastewater under anoxic condition using immobilized sludge. A 138-day experiment was conducted using wastewater containing NO3 --N (22.3 mg·l-1), phenol (10 mg·l-1) and m-cresol (5 mg·l-1) at 30°C using sucrose (50 mg·l-1) as co-substrate in an upflow reactor packed with polyvinyl alcohol (PVA) beads entrapped with anoxic sludge and powdered activated carbon (PAC). Throughout the experiment, phenol and m-cresol in the effluent were below the detectable level of 1.0 mg·l-1 even when HRT (hydraulic retention time) was as low as 0.55 hour. The effluent quality in general decreased with HRT. At 5.9 hours of HRT, the reactor effluent contained 5.9 mg·l-1 of COD (chemical oxygen demand) and 1.3 mg·l-1 of NO3 --N; but at 0.55 hour, they were, 17.3 and 5.7 mg·l-1, respectively. The effluent COD was from the unidentified soluble microbial products. Methane was not produced after the startup, and all PVA beads were not disintegrated. Results of a batch test showed that organic substrate was preferably consumed by the denitrify bacteria in favor of methane-producing bacteria. Scanning electron micrographs showed that most bacteria were populated on the bead surface due to the availability of nitrate and substrate.en_HK
dc.languageengen_HK
dc.publisherIWA 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.subjectDenitrificationen_HK
dc.subjectImmobilizationen_HK
dc.subjectLow-strengthen_HK
dc.subjectm-cresolen_HK
dc.subjectPACen_HK
dc.subjectPhenolen_HK
dc.subjectPolyvinyl alcoholen_HK
dc.subjectWastewateren_HK
dc.titleAnoxic treatment of low-strength wastewater by immobilized sludgeen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0273-1223&volume=36&issue=12&spage=135 &epage= 141&date=1997&atitle=Anoxic+treatment+of+low-strength+wastewater+by+immobilized+sludgeen_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0273-1223(97)00745-2en_HK
dc.identifier.scopuseid_2-s2.0-0031472847en_HK
dc.identifier.hkuros29820en_HK
dc.identifier.hkuros27007-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031472847&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume36en_HK
dc.identifier.issue12en_HK
dc.identifier.spage135en_HK
dc.identifier.epage141en_HK
dc.identifier.isiWOS:000071577500017-
dc.publisher.placeUnited Kingdomen_HK
dc.description.otherThe 6th IAWQ Asia-Pacific Regional Conference, Seoul, Korea, 20-23 May 1997. In Water Science And Technology, 1997, v. 36 n. 12, p. 135-141-
dc.identifier.scopusauthoridZhou, GM=7403686274en_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK

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