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Study on characteristics of organic (BOD,COD) removal in sedimentation storage tank of rural sewerage facilities with submerged biological filters

Abstract The organic (BOD, COD) removal performance of sedimentation storage tanks was investigated by using observed data in rural sewerage facility with submerged biological filters. It was found that the probability distribution of influent and effluent organic(BOD, COD) concentration in sediment... Full description

Journal Title: Transactions of the Japanese Society of Irrigation Drainage and Reclamation Engineering, 2003, Issue no.227, Issue 227, pp.9-16
Main Author: Nakano , T.
Format: Electronic Article Electronic Article
Language: jpn
Subjects:
Quelle: AGRIS (Food and Agriculture Organization of the United Nations)
ID: ISSN: 0387-2335
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recordid: faoagrisJP2004002180
title: Study on characteristics of organic (BOD,COD) removal in sedimentation storage tank of rural sewerage facilities with submerged biological filters
format: Article
creator:
  • Nakano , T.
subjects:
  • Rural Communities
  • Sewerage
  • Pollutant Load
  • Filters
  • Equipment Performance
ispartof: Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering, 2003, Issue no.227, Issue 227, pp.9-16
description: Abstract The organic (BOD, COD) removal performance of sedimentation storage tanks was investigated by using observed data in rural sewerage facility with submerged biological filters. It was found that the probability distribution of influent and effluent organic(BOD, COD) concentration in sedimentation storage tank agreed with logarithmic normal distribution . The organic removal was assumed to be influenced by the capability to catch suspended solids and detachment - and - elution of accumulated matter in sedimentation storage tank. As the deposited sludge on the bottom of the sedimentation storage tank has considerable effluent SS concentration from it , the control of sludge thickness is effective in maintaining stable organic removal efficiency. The hydraulic loading rate also has influence on organic removal in sedimentation storage tank and the relationship between the rate of organic removal and hydraulic retention time can be modeled as the form of rectangular hyperbolas . Therefore, it was found that organic (BOD, COD) removal depends primarily on influent organic concentration, thickness of deposited sludge, and hydraulic retention time in sedimentation storage tank. ; Summaries (En, Ja) ; 3 tables; 13 fig.; 10 ref.
language: jpn
source: AGRIS (Food and Agriculture Organization of the United Nations)
identifier: ISSN: 0387-2335
fulltext: fulltext
issn:
  • 03872335
  • 0387-2335
url: Link


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titleStudy on characteristics of organic (BOD,COD) removal in sedimentation storage tank of rural sewerage facilities with submerged biological filters
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identifierISSN: 0387-2335
subjectRural Communities ; Sewerage ; Pollutant Load ; Filters ; Equipment Performance
descriptionAbstract The organic (BOD, COD) removal performance of sedimentation storage tanks was investigated by using observed data in rural sewerage facility with submerged biological filters. It was found that the probability distribution of influent and effluent organic(BOD, COD) concentration in sedimentation storage tank agreed with logarithmic normal distribution . The organic removal was assumed to be influenced by the capability to catch suspended solids and detachment - and - elution of accumulated matter in sedimentation storage tank. As the deposited sludge on the bottom of the sedimentation storage tank has considerable effluent SS concentration from it , the control of sludge thickness is effective in maintaining stable organic removal efficiency. The hydraulic loading rate also has influence on organic removal in sedimentation storage tank and the relationship between the rate of organic removal and hydraulic retention time can be modeled as the form of rectangular hyperbolas . Therefore, it was found that organic (BOD, COD) removal depends primarily on influent organic concentration, thickness of deposited sludge, and hydraulic retention time in sedimentation storage tank. ; Summaries (En, Ja) ; 3 tables; 13 fig.; 10 ref.
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titleStudy on characteristics of organic (BOD,COD) removal in sedimentation storage tank of rural sewerage facilities with submerged biological filters
descriptionAbstract The organic (BOD, COD) removal performance of sedimentation storage tanks was investigated by using observed data in rural sewerage facility with submerged biological filters. It was found that the probability distribution of influent and effluent organic(BOD, COD) concentration in sedimentation storage tank agreed with logarithmic normal distribution . The organic removal was assumed to be influenced by the capability to catch suspended solids and detachment - and - elution of accumulated matter in sedimentation storage tank. As the deposited sludge on the bottom of the sedimentation storage tank has considerable effluent SS concentration from it , the control of sludge thickness is effective in maintaining stable organic removal efficiency. The hydraulic loading rate also has influence on organic removal in sedimentation storage tank and the relationship between the rate of organic removal and hydraulic retention time can be modeled as the form of rectangular hyperbolas . Therefore, it was found that organic (BOD, COD) removal depends primarily on influent organic concentration, thickness of deposited sludge, and hydraulic retention time in sedimentation storage tank. ; Summaries (En, Ja) ; 3 tables; 13 fig.; 10 ref.
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abstractAbstract The organic (BOD, COD) removal performance of sedimentation storage tanks was investigated by using observed data in rural sewerage facility with submerged biological filters. It was found that the probability distribution of influent and effluent organic(BOD, COD) concentration in sedimentation storage tank agreed with logarithmic normal distribution . The organic removal was assumed to be influenced by the capability to catch suspended solids and detachment - and - elution of accumulated matter in sedimentation storage tank. As the deposited sludge on the bottom of the sedimentation storage tank has considerable effluent SS concentration from it , the control of sludge thickness is effective in maintaining stable organic removal efficiency. The hydraulic loading rate also has influence on organic removal in sedimentation storage tank and the relationship between the rate of organic removal and hydraulic retention time can be modeled as the form of rectangular hyperbolas . Therefore, it was found that organic (BOD, COD) removal depends primarily on influent organic concentration, thickness of deposited sludge, and hydraulic retention time in sedimentation storage tank.
date2003-10