Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria

This study investigated the impact of sedimentation on rainwater storage system using a case study at the Ikorodu area of Lagos state, a rural area in Nigeria. In this investigation, the proportions of Escherichia coli (E. coli) that were settleable (due to sedimentation) and those that were at the...

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Autores principales:	Chukwuemeka Kingsley John, Jaan H. Pu, Manish Pandey, Rodrigo Moruzzi
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	escherichia coli (e. coli) rainwater sedimentation total suspended solids (tss) turbidity 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/5fd4e31ac7454d549a2fdeb677d54537
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spelling	oai:doaj.org-article:5fd4e31ac7454d549a2fdeb677d545372021-11-23T18:55:36ZImpacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria1606-97491607-079810.2166/ws.2021.093https://doaj.org/article/5fd4e31ac7454d549a2fdeb677d545372021-11-01T00:00:00Zhttp://ws.iwaponline.com/content/21/7/3356https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798This study investigated the impact of sedimentation on rainwater storage system using a case study at the Ikorodu area of Lagos state, a rural area in Nigeria. In this investigation, the proportions of Escherichia coli (E. coli) that were settleable (due to sedimentation) and those that were at the free phase have been studied. Water samples were collected from different depths in the inspected rainwater storage tank at two different periods (i.e. rainy and dry periods) for 20 days. The samples collected from these periods have been analysed for physical and microbial measures before passing it through the serial filters with pore sizes of 500 μm, 100 μm, 10 μm and 1.5 μm to measure the retained particle mass. From the results, it was observed that: (1) the water quality at the free-phase zone was better than that at the tank's bottom; (2) the settleable bacteria rapidly sank to bottom; (3) the correlation of turbidity, E. coli and total suspended solids (TSS) for all the rain events showed a relatively high Pearson's coefficient of 0.9 to one another; and (4) over 70% of settling TSS occurred within first 36 h. Finally, it has been found that the physical sedimentation process can significantly reduce the microbial measures. HIGHLIGHTS It consists of a case study of roof-harvested rainwater at Ikorodu area of Lagos, Nigeria.; In this study, sedimentation analysis has been used to quantify the rainwater quality (including its physico-chemical and microbial parameters).; This paper presents a pilot rainwater quality study at the investigated area.;Chukwuemeka Kingsley JohnJaan H. PuManish PandeyRodrigo MoruzziIWA Publishingarticleescherichia coli (e. coli)rainwatersedimentationtotal suspended solids (tss)turbidityWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 7, Pp 3356-3369 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	escherichia coli (e. coli) rainwater sedimentation total suspended solids (tss) turbidity Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	escherichia coli (e. coli) rainwater sedimentation total suspended solids (tss) turbidity Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Chukwuemeka Kingsley John Jaan H. Pu Manish Pandey Rodrigo Moruzzi Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria
description	This study investigated the impact of sedimentation on rainwater storage system using a case study at the Ikorodu area of Lagos state, a rural area in Nigeria. In this investigation, the proportions of Escherichia coli (E. coli) that were settleable (due to sedimentation) and those that were at the free phase have been studied. Water samples were collected from different depths in the inspected rainwater storage tank at two different periods (i.e. rainy and dry periods) for 20 days. The samples collected from these periods have been analysed for physical and microbial measures before passing it through the serial filters with pore sizes of 500 μm, 100 μm, 10 μm and 1.5 μm to measure the retained particle mass. From the results, it was observed that: (1) the water quality at the free-phase zone was better than that at the tank's bottom; (2) the settleable bacteria rapidly sank to bottom; (3) the correlation of turbidity, E. coli and total suspended solids (TSS) for all the rain events showed a relatively high Pearson's coefficient of 0.9 to one another; and (4) over 70% of settling TSS occurred within first 36 h. Finally, it has been found that the physical sedimentation process can significantly reduce the microbial measures. HIGHLIGHTS It consists of a case study of roof-harvested rainwater at Ikorodu area of Lagos, Nigeria.; In this study, sedimentation analysis has been used to quantify the rainwater quality (including its physico-chemical and microbial parameters).; This paper presents a pilot rainwater quality study at the investigated area.;
format	article
author	Chukwuemeka Kingsley John Jaan H. Pu Manish Pandey Rodrigo Moruzzi
author_facet	Chukwuemeka Kingsley John Jaan H. Pu Manish Pandey Rodrigo Moruzzi
author_sort	Chukwuemeka Kingsley John
title	Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria
title_short	Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria
title_full	Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria
title_fullStr	Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria
title_full_unstemmed	Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria
title_sort	impacts of sedimentation on rainwater quality: case study at ikorodu of lagos, nigeria
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/5fd4e31ac7454d549a2fdeb677d54537
work_keys_str_mv	AT chukwuemekakingsleyjohn impactsofsedimentationonrainwaterqualitycasestudyatikoroduoflagosnigeria AT jaanhpu impactsofsedimentationonrainwaterqualitycasestudyatikoroduoflagosnigeria AT manishpandey impactsofsedimentationonrainwaterqualitycasestudyatikoroduoflagosnigeria AT rodrigomoruzzi impactsofsedimentationonrainwaterqualitycasestudyatikoroduoflagosnigeria
_version_	1718416156790882304

Impacts of sedimentation on rainwater quality: case study at Ikorodu of Lagos, Nigeria

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