Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal Industries
Shortage of water resources and renewable per capita in last 30 years is put Iran on crisis threshold. Wastewater reuse is one of the battle solutions for water shortage and prevents wastewater depletion and environmental pollution. Thus, a pilot scale experiment was carried out to evaluate an integ...
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Format: | Article |
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Isfahan University of Technology
2019-12-01
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Series: | علوم آب و خاک |
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Online Access: | http://jstnar.iut.ac.ir/article-1-3609-en.html |
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author | O. Mohamadi M. Heidarpour S. Jamali |
author_facet | O. Mohamadi M. Heidarpour S. Jamali |
author_sort | O. Mohamadi |
collection | DOAJ |
description | Shortage of water resources and renewable per capita in last 30 years is put Iran on crisis threshold. Wastewater reuse is one of the battle solutions for water shortage and prevents wastewater depletion and environmental pollution. Thus, a pilot scale experiment was carried out to evaluate an integrated anaerobic/aerobic treatment for removal of BOD5 and COD, also to reduction of hydraulic retention time by considering optimum removal efficiency. The pilot was an anaerobic/aerobic bioreactor type under continuous-feeding regime based on a central composite design. The pilot was studied in different retention time and aeration was carried out between 5-15 hours. According to different retention times for COD removal efficiency, 24 hours was selected as optimum hydraulic retention time, that it is comparable to those obtained for 48 hours and over in plant roughly and could remove COD and BOD in acceptable ranges, results showed that average removal efficiency for BOD5 were 63.86 and 83.99 percent in aerobic and anaerobic phases, respectively. The average removal efficiency for COD was 76.5 and 74.35 percent for anaerobic and aerobic sections, respectively. The average removal efficiency for BOD5 and COD in this integrated aerobic-anaerobic pilot 95.24 and 94.8 percent, respectively. |
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format | Article |
id | doaj.art-6488d855aa5641e2afb82f96676e15a9 |
institution | Directory Open Access Journal |
issn | 2476-3594 2476-5554 |
language | fas |
last_indexed | 2024-12-20T09:01:29Z |
publishDate | 2019-12-01 |
publisher | Isfahan University of Technology |
record_format | Article |
series | علوم آب و خاک |
spelling | doaj.art-6488d855aa5641e2afb82f96676e15a92022-12-21T19:45:50ZfasIsfahan University of Technologyعلوم آب و خاک2476-35942476-55542019-12-01233275287Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal IndustriesO. Mohamadi0M. Heidarpour1S. Jamali2 1. Water Engineering Department, Faculty of Soil and Water Engineering, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran. 2. Water Engineering Department, College of Agriculture, Isfahan University of Technology, Isfahan, Iran. 3. Water Engineering Department, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran. Shortage of water resources and renewable per capita in last 30 years is put Iran on crisis threshold. Wastewater reuse is one of the battle solutions for water shortage and prevents wastewater depletion and environmental pollution. Thus, a pilot scale experiment was carried out to evaluate an integrated anaerobic/aerobic treatment for removal of BOD5 and COD, also to reduction of hydraulic retention time by considering optimum removal efficiency. The pilot was an anaerobic/aerobic bioreactor type under continuous-feeding regime based on a central composite design. The pilot was studied in different retention time and aeration was carried out between 5-15 hours. According to different retention times for COD removal efficiency, 24 hours was selected as optimum hydraulic retention time, that it is comparable to those obtained for 48 hours and over in plant roughly and could remove COD and BOD in acceptable ranges, results showed that average removal efficiency for BOD5 were 63.86 and 83.99 percent in aerobic and anaerobic phases, respectively. The average removal efficiency for COD was 76.5 and 74.35 percent for anaerobic and aerobic sections, respectively. The average removal efficiency for BOD5 and COD in this integrated aerobic-anaerobic pilot 95.24 and 94.8 percent, respectively.http://jstnar.iut.ac.ir/article-1-3609-en.htmlanaerobic biological treatmentbiological oxygen demandchemical oxygen demandhydraulic retention timeunconventional water |
spellingShingle | O. Mohamadi M. Heidarpour S. Jamali Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal Industries علوم آب و خاک anaerobic biological treatment biological oxygen demand chemical oxygen demand hydraulic retention time unconventional water |
title | Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal Industries |
title_full | Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal Industries |
title_fullStr | Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal Industries |
title_full_unstemmed | Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal Industries |
title_short | Evaluation of COD and BOD5 Removal Efficiency by Combined Treatment Aerobic-Anaerobic (AO) on Sewage of Metal Industries |
title_sort | evaluation of cod and bod5 removal efficiency by combined treatment aerobic anaerobic ao on sewage of metal industries |
topic | anaerobic biological treatment biological oxygen demand chemical oxygen demand hydraulic retention time unconventional water |
url | http://jstnar.iut.ac.ir/article-1-3609-en.html |
work_keys_str_mv | AT omohamadi evaluationofcodandbod5removalefficiencybycombinedtreatmentaerobicanaerobicaoonsewageofmetalindustries AT mheidarpour evaluationofcodandbod5removalefficiencybycombinedtreatmentaerobicanaerobicaoonsewageofmetalindustries AT sjamali evaluationofcodandbod5removalefficiencybycombinedtreatmentaerobicanaerobicaoonsewageofmetalindustries |