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Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor

The recycling of greywater is an integral part of a water management system owing to the scarcity of fresh water resources. This article explores the effectiveness of an aerobic sequencing batch reactor in treating nutrient-deficit and nutrient-spiked dark greywater for agricultural reuse. The dar...

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Main Authors: Vijayaraghavan, Krishnan, Ahmad, Desa, Jeru, Juriah
Format: Article
Language:English
English
Published: Wiley-Blackwell 2008
Online Access:http://psasir.upm.edu.my/id/eprint/7852/1/Influence%20of%20CODNP%20ratio%20on%20dark%20greywater%20treatment%20using%20a%20sequencing%20batch%20reactor.pdf
http://psasir.upm.edu.my/id/eprint/7852/
http://dx.doi.org/10.1002/jctb.1842
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spelling my.upm.eprints.78522015-10-08T02:53:24Z http://psasir.upm.edu.my/id/eprint/7852/ Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor Vijayaraghavan, Krishnan Ahmad, Desa Jeru, Juriah The recycling of greywater is an integral part of a water management system owing to the scarcity of fresh water resources. This article explores the effectiveness of an aerobic sequencing batch reactor in treating nutrient-deficit and nutrient-spiked dark greywater for agricultural reuse. The dark greywater in the present investigation had a COD:N:P ratio of 100:1.82:0.76, while the preferred ratio for biological oxidation is 100:5:1 (COD, chemical oxygen demand). The aerobic oxidation of nutrient-deficit and nutrient-spiked dark greywater with a COD:N:P ratio of 100:2.5:0.5; 100:3.5:0.75 and 100:5:1 resulted in outlet COD values of 64; 35; 15 and 12mg L−1, with a corresponding BOD5 value of 37; 22; 10 and 8mg L−1 at 36 h hydraulic retention time (HRT). Hence treatment of nutrient-added dark greywater at a COD:N:P ratio 100:3.5:0.75 and 100:5:1 for 36 h HRT complied with the Malaysian discharge standards for agricultural activities. Treated greywater has the potential for consideration as a resource, since it can be used as a supplement or replacement for potable water in landscape irrigation and other agricultural activities in rural and urban areas. Moreover, the level of greywater treatment is dictated by the final water quality requirement. Wiley-Blackwell 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/7852/1/Influence%20of%20CODNP%20ratio%20on%20dark%20greywater%20treatment%20using%20a%20sequencing%20batch%20reactor.pdf Vijayaraghavan, Krishnan and Ahmad, Desa and Jeru, Juriah (2008) Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor. Journal of Chemical Technology and Biotechnology, 83 (5). pp. 756-762. ISSN 0268-2575 http://dx.doi.org/10.1002/jctb.1842 10.1002/jctb.1842 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The recycling of greywater is an integral part of a water management system owing to the scarcity of fresh water resources. This article explores the effectiveness of an aerobic sequencing batch reactor in treating nutrient-deficit and nutrient-spiked dark greywater for agricultural reuse. The dark greywater in the present investigation had a COD:N:P ratio of 100:1.82:0.76, while the preferred ratio for biological oxidation is 100:5:1 (COD, chemical oxygen demand). The aerobic oxidation of nutrient-deficit and nutrient-spiked dark greywater with a COD:N:P ratio of 100:2.5:0.5; 100:3.5:0.75 and 100:5:1 resulted in outlet COD values of 64; 35; 15 and 12mg L−1, with a corresponding BOD5 value of 37; 22; 10 and 8mg L−1 at 36 h hydraulic retention time (HRT). Hence treatment of nutrient-added dark greywater at a COD:N:P ratio 100:3.5:0.75 and 100:5:1 for 36 h HRT complied with the Malaysian discharge standards for agricultural activities. Treated greywater has the potential for consideration as a resource, since it can be used as a supplement or replacement for potable water in landscape irrigation and other agricultural activities in rural and urban areas. Moreover, the level of greywater treatment is dictated by the final water quality requirement.
format Article
author Vijayaraghavan, Krishnan
Ahmad, Desa
Jeru, Juriah
spellingShingle Vijayaraghavan, Krishnan
Ahmad, Desa
Jeru, Juriah
Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor
author_facet Vijayaraghavan, Krishnan
Ahmad, Desa
Jeru, Juriah
author_sort Vijayaraghavan, Krishnan
title Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor
title_short Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor
title_full Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor
title_fullStr Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor
title_full_unstemmed Influence of COD:N:P ratio on dark greywater treatment using a sequencing batch reactor
title_sort influence of cod:n:p ratio on dark greywater treatment using a sequencing batch reactor
publisher Wiley-Blackwell
publishDate 2008
url http://psasir.upm.edu.my/id/eprint/7852/1/Influence%20of%20CODNP%20ratio%20on%20dark%20greywater%20treatment%20using%20a%20sequencing%20batch%20reactor.pdf
http://psasir.upm.edu.my/id/eprint/7852/
http://dx.doi.org/10.1002/jctb.1842
_version_ 1643823845968183296
score 13.211869

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