Effect of saline drainage water on performance of denitrification bioreactors

Excessive use of nitrate fertilizers in agriculture causes harm to humans and the environment. The most suitable nitrate removal process is heterotrophic biological denitrification. The purpose of the present study was to evaluate the performance of three shapes of denitrification bioreactors: trian...

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Autores principales:	Sasan Faramarzmanesh, Mahmoud Mashal, Seyyed Ebrahim Hashemi Garmdareh
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	beech woodchips dimensions of bioreactors hydraulic retention time Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/e3b49b1115a04c10b2cb0af5ff97bef6
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spelling	oai:doaj.org-article:e3b49b1115a04c10b2cb0af5ff97bef62021-11-06T07:05:21ZEffect of saline drainage water on performance of denitrification bioreactors1606-97491607-079810.2166/ws.2020.260https://doaj.org/article/e3b49b1115a04c10b2cb0af5ff97bef62021-02-01T00:00:00Zhttp://ws.iwaponline.com/content/21/1/98https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Excessive use of nitrate fertilizers in agriculture causes harm to humans and the environment. The most suitable nitrate removal process is heterotrophic biological denitrification. The purpose of the present study was to evaluate the performance of three shapes of denitrification bioreactors: triangular, rectangular and semicircular. The main element that was used to remove nitrate was beech woodchips. The concentration of inlet nitrate was 75 mg/l and the salinity of the solution was 1 ds/m and 5 ds/m, for a period of six months. The results showed that the efficiency of the triangular bioreactor with a salinity level of 1 ds/m was 90%, which is more efficient than the rectangular and semicircular bioreactors with performances of 55.8% and 53.8%, respectively. The results also indicated that at a salinity level of 5 ds/m, the semicircular bioreactor with a performance of 50.8% inlet nitrate removal was the best of the three shapes of bioreactors tested, the efficiencies of the triangular and rectangular bioreactors were 49.9% and 48.6% respectively. Also, it was observed that at the salinity level of 1 ds/m, a high hydraulic retention time had a high positive effect on denitrification, on the other hand at the salinity level of 5 ds/m, there was better performance of denitrification if the hydraulic retention time was lower.Sasan FaramarzmaneshMahmoud MashalSeyyed Ebrahim Hashemi GarmdarehIWA Publishingarticlebeech woodchipsdimensions of bioreactorshydraulic retention timeWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 1, Pp 98-107 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	beech woodchips dimensions of bioreactors hydraulic retention time Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	beech woodchips dimensions of bioreactors hydraulic retention time Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Sasan Faramarzmanesh Mahmoud Mashal Seyyed Ebrahim Hashemi Garmdareh Effect of saline drainage water on performance of denitrification bioreactors
description	Excessive use of nitrate fertilizers in agriculture causes harm to humans and the environment. The most suitable nitrate removal process is heterotrophic biological denitrification. The purpose of the present study was to evaluate the performance of three shapes of denitrification bioreactors: triangular, rectangular and semicircular. The main element that was used to remove nitrate was beech woodchips. The concentration of inlet nitrate was 75 mg/l and the salinity of the solution was 1 ds/m and 5 ds/m, for a period of six months. The results showed that the efficiency of the triangular bioreactor with a salinity level of 1 ds/m was 90%, which is more efficient than the rectangular and semicircular bioreactors with performances of 55.8% and 53.8%, respectively. The results also indicated that at a salinity level of 5 ds/m, the semicircular bioreactor with a performance of 50.8% inlet nitrate removal was the best of the three shapes of bioreactors tested, the efficiencies of the triangular and rectangular bioreactors were 49.9% and 48.6% respectively. Also, it was observed that at the salinity level of 1 ds/m, a high hydraulic retention time had a high positive effect on denitrification, on the other hand at the salinity level of 5 ds/m, there was better performance of denitrification if the hydraulic retention time was lower.
format	article
author	Sasan Faramarzmanesh Mahmoud Mashal Seyyed Ebrahim Hashemi Garmdareh
author_facet	Sasan Faramarzmanesh Mahmoud Mashal Seyyed Ebrahim Hashemi Garmdareh
author_sort	Sasan Faramarzmanesh
title	Effect of saline drainage water on performance of denitrification bioreactors
title_short	Effect of saline drainage water on performance of denitrification bioreactors
title_full	Effect of saline drainage water on performance of denitrification bioreactors
title_fullStr	Effect of saline drainage water on performance of denitrification bioreactors
title_full_unstemmed	Effect of saline drainage water on performance of denitrification bioreactors
title_sort	effect of saline drainage water on performance of denitrification bioreactors
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e3b49b1115a04c10b2cb0af5ff97bef6
work_keys_str_mv	AT sasanfaramarzmanesh effectofsalinedrainagewateronperformanceofdenitrificationbioreactors AT mahmoudmashal effectofsalinedrainagewateronperformanceofdenitrificationbioreactors AT seyyedebrahimhashemigarmdareh effectofsalinedrainagewateronperformanceofdenitrificationbioreactors
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Effect of saline drainage water on performance of denitrification bioreactors

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