Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate

Intermittent planted filters are extensive biological purification techniques aimed at oxidizing and decontaminating urban wastewater at a low cost and with minimum environmental impacts. The main purpose of this study was to evaluate the performances of intermittent planted filters in treating urba...

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Autores principales:	Hiba Tlili, Mahmoud Bali, Rachid Boukchina
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	arid climate assessment efficiency planted filters treatment urban wastewater Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/e0cc9532b1fe4002af4fc757f7690ba9
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spelling	oai:doaj.org-article:e0cc9532b1fe4002af4fc757f7690ba92021-11-06T11:24:22ZAssessment of the performance of intermittent planted filters in treating urban wastewater under arid climate0273-12231996-973210.2166/wst.2021.362https://doaj.org/article/e0cc9532b1fe4002af4fc757f7690ba92021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/7/1704https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Intermittent planted filters are extensive biological purification techniques aimed at oxidizing and decontaminating urban wastewater at a low cost and with minimum environmental impacts. The main purpose of this study was to evaluate the performances of intermittent planted filters in treating urban wastewater under arid conditions of southern Tunisia. The experimental study was carried out on a pilot scale plant comprising five constructed gravel-sand basins. Screened urban wastewater effluent was intermittently applied with a daily hydraulic load of 400 L/m2. Several water quality parameters were monitored at the inlet and outlet of this treatment plant. The average removal rate were 94.8%, 92.3%, 99.3%, 89.9% and 93.3% for chemical and biological oxygen demand, total suspended solids, ammonium nitrogen and orthophosphate, respectively. Additionally, results demonstrated that this treatment system is capable of removing 3.67, 3.22 and 2.44 log units of total and faecal coliforms, and faecal streptococci, respectively. Results showed that Phragmites australis allowed the development of biofilm in the sand filter beds, improving their purification efficiency. Furthermore, no bio-sludge production, no mechanical aeration, low energy requirement (0.02 kW/m2) and green aesthetic ambience are the additional particular strengths of the proposed pilot plant. HIGHLIGHTS Planted filters are efficient in treating urban wastewater under arid conditions.; Results showed that Phragmites australis improved the purification efficiency of the planted filters.; Planted filters accomplished significant removal rates of organic and nitrogen matter.; This treatment system led a significant abatement of pathogens.; The treated wastewater can be reused in irrigation.;Hiba TliliMahmoud BaliRachid BoukchinaIWA Publishingarticlearid climateassessmentefficiencyplanted filterstreatmenturban wastewaterEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 7, Pp 1704-1714 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	arid climate assessment efficiency planted filters treatment urban wastewater Environmental technology. Sanitary engineering TD1-1066
spellingShingle	arid climate assessment efficiency planted filters treatment urban wastewater Environmental technology. Sanitary engineering TD1-1066 Hiba Tlili Mahmoud Bali Rachid Boukchina Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate
description	Intermittent planted filters are extensive biological purification techniques aimed at oxidizing and decontaminating urban wastewater at a low cost and with minimum environmental impacts. The main purpose of this study was to evaluate the performances of intermittent planted filters in treating urban wastewater under arid conditions of southern Tunisia. The experimental study was carried out on a pilot scale plant comprising five constructed gravel-sand basins. Screened urban wastewater effluent was intermittently applied with a daily hydraulic load of 400 L/m2. Several water quality parameters were monitored at the inlet and outlet of this treatment plant. The average removal rate were 94.8%, 92.3%, 99.3%, 89.9% and 93.3% for chemical and biological oxygen demand, total suspended solids, ammonium nitrogen and orthophosphate, respectively. Additionally, results demonstrated that this treatment system is capable of removing 3.67, 3.22 and 2.44 log units of total and faecal coliforms, and faecal streptococci, respectively. Results showed that Phragmites australis allowed the development of biofilm in the sand filter beds, improving their purification efficiency. Furthermore, no bio-sludge production, no mechanical aeration, low energy requirement (0.02 kW/m2) and green aesthetic ambience are the additional particular strengths of the proposed pilot plant. HIGHLIGHTS Planted filters are efficient in treating urban wastewater under arid conditions.; Results showed that Phragmites australis improved the purification efficiency of the planted filters.; Planted filters accomplished significant removal rates of organic and nitrogen matter.; This treatment system led a significant abatement of pathogens.; The treated wastewater can be reused in irrigation.;
format	article
author	Hiba Tlili Mahmoud Bali Rachid Boukchina
author_facet	Hiba Tlili Mahmoud Bali Rachid Boukchina
author_sort	Hiba Tlili
title	Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate
title_short	Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate
title_full	Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate
title_fullStr	Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate
title_full_unstemmed	Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate
title_sort	assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e0cc9532b1fe4002af4fc757f7690ba9
work_keys_str_mv	AT hibatlili assessmentoftheperformanceofintermittentplantedfiltersintreatingurbanwastewaterunderaridclimate AT mahmoudbali assessmentoftheperformanceofintermittentplantedfiltersintreatingurbanwastewaterunderaridclimate AT rachidboukchina assessmentoftheperformanceofintermittentplantedfiltersintreatingurbanwastewaterunderaridclimate
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Assessment of the performance of intermittent planted filters in treating urban wastewater under arid climate

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