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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1177/0734242X13514624
|2 doi
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|a pubmed24n0780.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Aluko, Olufemi Oludare
|e verfasserin
|4 aut
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|a Evaluation of effluents from bench-scale treatment combinations for landfill leachate in Ibadan, Nigeria
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 30.09.2014
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|a Date Revised 21.09.2015
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|a published: Print
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|a Citation Status MEDLINE
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|a The removal of pollutants in landfill leachate was investigated using constructed wetlands, a trickling filter, alum flocculation and coagulation, and a sequencing batch reactor in various combinations. Thirteen combined operations were investigated involving three out of the four unit treatment methods in series. The study was conducted because unit operations, though achieved reductions in pollutants concentrations had effluent values above the national regulatory guideline values. The suspended solids of effluents were permissible in most treatment processes, while reductions in 5-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and ammonia (NH3) of leachates ranged from 80% to 97%; 86% to 97% and 92% to 98% respectively. However, there were significant increases in nitrate (85%) and dissolved oxygen of treatment (218%). In addition, the characteristics of the recommended treatment sequence, involving constructed wetlands, alum and trickling filter produced effluents with reductions in colour (97%), alkalinity (97%), BOD (97%), COD (97%) and NH3 (98%), and in metals, except nickel (29% reduction from the influent values). The recommended treatment combination is suitable for effective leachate management at the landfill. The cost of constructing and operating the recommended treatment combination at the facility, for 5 years, would be NGN6,009,750.00 ($38,036.39). The performance should be monitored on site prior to full adoption if effluent characteristics remain consistently low over dry and wet seasons
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|a Journal Article
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|a Landfill leachate
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|a Nigeria
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|a combined treatment methods
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|a discharge regulatory standards
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|a effluent quality
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|a Nitrates
|2 NLM
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|a Water Pollutants, Chemical
|2 NLM
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|a Ammonia
|2 NLM
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|a 7664-41-7
|2 NLM
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|a Sridhar, Mkc
|e verfasserin
|4 aut
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|i Enthalten in
|t Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA
|d 1991
|g 32(2014), 1 vom: 07. Jan., Seite 70-8
|w (DE-627)NLM098164791
|x 1096-3669
|7 nnns
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| 773 |
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|g volume:32
|g year:2014
|g number:1
|g day:07
|g month:01
|g pages:70-8
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|u http://dx.doi.org/10.1177/0734242X13514624
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