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Study on influence caused by design and operation factors of contact aeration tank on effluent ATU-BOD.N-BOD concentrations from sedimentation tank in rural sewerage facilities with biofilm processes

The design and operation factors on the effluent ATU-BOD and N-BOD concentrations in sedimentation tank were investigated by using observed data in the rural sewerage facilities with biofilm processes. It was found that the effluent N-BOD accounted for approximate 50 percent of the effluent BOD conc... Full description

Journal Title: Transactions of the Japanese Society of Irrigation Drainage and Rural Engineering, 2009, Issue no.262, Issue 262, pp.95-102
Main Author: Nakano , T.
Format: Electronic Article Electronic Article
Language: jpn
Subjects:
Quelle: AGRIS (Food and Agriculture Organization of the United Nations)
ID: ISSN: 1882-2789
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recordid: faoagrisJP2009006864
title: Study on influence caused by design and operation factors of contact aeration tank on effluent ATU-BOD.N-BOD concentrations from sedimentation tank in rural sewerage facilities with biofilm processes
format: Article
creator:
  • Nakano , T.
subjects:
  • Rural Communities
  • Sewerage
  • Design
  • Aeration
  • Tanks
  • Sediment
  • Pollutant Load
  • Wastewater
  • Communaute Rurale
  • Evacuation Des Eaux Usees
  • Conception
  • Aeration
  • Citerne
  • Sediment
  • Charge Polluante
  • Eau Usee
  • Comunidades Rurales
  • Evacuacion De Aguas Residuales
  • Diseno
  • Aireacion
  • Cisternas
  • Sedimento
  • Carga Contaminante
  • Aguas Residuales
ispartof: Transactions of the Japanese Society of Irrigation, Drainage and Rural Engineering, 2009, Issue no.262, Issue 262, pp.95-102
description: The design and operation factors on the effluent ATU-BOD and N-BOD concentrations in sedimentation tank were investigated by using observed data in the rural sewerage facilities with biofilm processes. It was found that the effluent N-BOD accounted for approximate 50 percent of the effluent BOD concentration in sedimentation tank because of the effluent ATU-BOD decrease (about 70 percent) and the effluent N-BOD increase(about 4 times) by treatment processes of contact aeration tank. It was recognized that the effluent ATU-BOD concentration in sedimentation tank was influenced by the design and operation factors such as influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. The effluent ATU-BOD concentration in sedimentation tank was assumed to be governed by first-order function with complete-mix system of biological treatment process. The effluent ATU-BOD concentration in sedimentation tank was found to be predicted by the empirical formula of hydraulic retention time, influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. It was recognized that the peak effluent N-BOD concentration in sedimentation tank occurred in the around 10-15 hours of hydraulic retention time under the influence of biological nitrification reaction and nitrogenous compound. The effluent N-BOD concentration in sedimentation tank was also influenced by the effluent SS concentration in sedimentation tank. ; Summaries (En, Ja) ; 4 tab. 11 fig. 11 ref.
language: jpn
source: AGRIS (Food and Agriculture Organization of the United Nations)
identifier: ISSN: 1882-2789
fulltext: fulltext
issn:
  • 18822789
  • 1882-2789
url: Link


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titleStudy on influence caused by design and operation factors of contact aeration tank on effluent ATU-BOD.N-BOD concentrations from sedimentation tank in rural sewerage facilities with biofilm processes
creatorNakano , T.
ispartofTransactions of the Japanese Society of Irrigation, Drainage and Rural Engineering, 2009, Issue no.262, Issue 262, pp.95-102
identifierISSN: 1882-2789
subjectRural Communities ; Sewerage ; Design ; Aeration ; Tanks ; Sediment ; Pollutant Load ; Wastewater ; Communaute Rurale ; Evacuation Des Eaux Usees ; Conception ; Aeration ; Citerne ; Sediment ; Charge Polluante ; Eau Usee ; Comunidades Rurales ; Evacuacion De Aguas Residuales ; Diseno ; Aireacion ; Cisternas ; Sedimento ; Carga Contaminante ; Aguas Residuales
descriptionThe design and operation factors on the effluent ATU-BOD and N-BOD concentrations in sedimentation tank were investigated by using observed data in the rural sewerage facilities with biofilm processes. It was found that the effluent N-BOD accounted for approximate 50 percent of the effluent BOD concentration in sedimentation tank because of the effluent ATU-BOD decrease (about 70 percent) and the effluent N-BOD increase(about 4 times) by treatment processes of contact aeration tank. It was recognized that the effluent ATU-BOD concentration in sedimentation tank was influenced by the design and operation factors such as influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. The effluent ATU-BOD concentration in sedimentation tank was assumed to be governed by first-order function with complete-mix system of biological treatment process. The effluent ATU-BOD concentration in sedimentation tank was found to be predicted by the empirical formula of hydraulic retention time, influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. It was recognized that the peak effluent N-BOD concentration in sedimentation tank occurred in the around 10-15 hours of hydraulic retention time under the influence of biological nitrification reaction and nitrogenous compound. The effluent N-BOD concentration in sedimentation tank was also influenced by the effluent SS concentration in sedimentation tank. ; Summaries (En, Ja) ; 4 tab. 11 fig. 11 ref.
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titleStudy on influence caused by design and operation factors of contact aeration tank on effluent ATU-BOD.N-BOD concentrations from sedimentation tank in rural sewerage facilities with biofilm processes
descriptionThe design and operation factors on the effluent ATU-BOD and N-BOD concentrations in sedimentation tank were investigated by using observed data in the rural sewerage facilities with biofilm processes. It was found that the effluent N-BOD accounted for approximate 50 percent of the effluent BOD concentration in sedimentation tank because of the effluent ATU-BOD decrease (about 70 percent) and the effluent N-BOD increase(about 4 times) by treatment processes of contact aeration tank. It was recognized that the effluent ATU-BOD concentration in sedimentation tank was influenced by the design and operation factors such as influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. The effluent ATU-BOD concentration in sedimentation tank was assumed to be governed by first-order function with complete-mix system of biological treatment process. The effluent ATU-BOD concentration in sedimentation tank was found to be predicted by the empirical formula of hydraulic retention time, influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. It was recognized that the peak effluent N-BOD concentration in sedimentation tank occurred in the around 10-15 hours of hydraulic retention time under the influence of biological nitrification reaction and nitrogenous compound. The effluent N-BOD concentration in sedimentation tank was also influenced by the effluent SS concentration in sedimentation tank. ; Summaries (En, Ja) ; 4 tab. 11 fig. 11 ref.
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abstractThe design and operation factors on the effluent ATU-BOD and N-BOD concentrations in sedimentation tank were investigated by using observed data in the rural sewerage facilities with biofilm processes. It was found that the effluent N-BOD accounted for approximate 50 percent of the effluent BOD concentration in sedimentation tank because of the effluent ATU-BOD decrease (about 70 percent) and the effluent N-BOD increase(about 4 times) by treatment processes of contact aeration tank. It was recognized that the effluent ATU-BOD concentration in sedimentation tank was influenced by the design and operation factors such as influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. The effluent ATU-BOD concentration in sedimentation tank was assumed to be governed by first-order function with complete-mix system of biological treatment process. The effluent ATU-BOD concentration in sedimentation tank was found to be predicted by the empirical formula of hydraulic retention time, influent ATU-BOD concentration, specific surface area of contact filter for fixed bed submerged filter, and average DO in contact aeration tank. It was recognized that the peak effluent N-BOD concentration in sedimentation tank occurred in the around 10-15 hours of hydraulic retention time under the influence of biological nitrification reaction and nitrogenous compound. The effluent N-BOD concentration in sedimentation tank was also influenced by the effluent SS concentration in sedimentation tank.
date2009-08