A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati

This report focused on a numerical modelling assessment of the possible effects of greywater reuse on the freshwater lenses in South Tarawa, Kiribati. Conceptual models and 2D cross-sectional numerical models of selected transects of Betio, Bairiki...

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Main Authors:	Jazayeri, Amir, Solórzano-Rivas, S. Cristina, Sinclair, Peter, Antoniou, Andreas, Irvine, Dylan J., Werner, Adrian D.
Format:	Report
Language:	English
Published:	World Bank, Washington, DC 2019
Subjects:	GREYWATER GROUNDWATER WATER TABLE FRESHWATER WATER QUALITY HYDROLOGY MODELLING SIMULATION DISPOSAL
Online Access:	http://documents.worldbank.org/curated/en/326841574137941944/A-Groundwater-Modelling-Investigation-of-Greywater-Disposal-South-Tarawa-Kiribati http://hdl.handle.net/10986/32766

id	okr-10986-32766
recordtype	oai_dc
spelling	okr-10986-327662021-05-25T09:29:37Z A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati Jazayeri, Amir Solórzano-Rivas, S. Cristina Sinclair, Peter Antoniou, Andreas Irvine, Dylan J. Werner, Adrian D. GREYWATER GROUNDWATER WATER TABLE FRESHWATER WATER QUALITY HYDROLOGY MODELLING SIMULATION DISPOSAL This report focused on a numerical modelling assessment of the possible effects of greywater reuse on the freshwater lenses in South Tarawa, Kiribati. Conceptual models and 2D cross-sectional numerical models of selected transects of Betio, Bairiki and Bikenibeu Islands were developed based on available field data. Simulations then were used to assess greywater transport and its effects on freshwater lenses in current situation and future scenarios. The modelling results show that adding the greywater discharge increases notably the freshwater thickness compared to the baseline scenario where greywater discharge is neglected. Eight scenarios were simulated to test the influence of rainfall dynamics and groundwater abstraction rates on the contribution of greywater disposal on freshwater lens thickness. The report then provides recommendations for future work to enhance the outcomes of future modelling efforts and the feasibility of indirect greywater reuse. 2019-12-03T22:23:51Z 2019-12-03T22:23:51Z 2019-06-01 Report http://documents.worldbank.org/curated/en/326841574137941944/A-Groundwater-Modelling-Investigation-of-Greywater-Disposal-South-Tarawa-Kiribati http://hdl.handle.net/10986/32766 English CC BY 3.0 IGO http://creativecommons.org/licenses/by/3.0/igo World Bank World Bank, Washington, DC Publications & Research Publications & Research :: Working Paper East Asia and Pacific Kiribati
repository_type	Digital Repository
institution_category	Foreign Institution
institution	Digital Repositories
building	World Bank Open Knowledge Repository
collection	World Bank
language	English
topic	GREYWATER GROUNDWATER WATER TABLE FRESHWATER WATER QUALITY HYDROLOGY MODELLING SIMULATION DISPOSAL
spellingShingle	GREYWATER GROUNDWATER WATER TABLE FRESHWATER WATER QUALITY HYDROLOGY MODELLING SIMULATION DISPOSAL Jazayeri, Amir Solórzano-Rivas, S. Cristina Sinclair, Peter Antoniou, Andreas Irvine, Dylan J. Werner, Adrian D. A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati
geographic_facet	East Asia and Pacific Kiribati
description	This report focused on a numerical modelling assessment of the possible effects of greywater reuse on the freshwater lenses in South Tarawa, Kiribati. Conceptual models and 2D cross-sectional numerical models of selected transects of Betio, Bairiki and Bikenibeu Islands were developed based on available field data. Simulations then were used to assess greywater transport and its effects on freshwater lenses in current situation and future scenarios. The modelling results show that adding the greywater discharge increases notably the freshwater thickness compared to the baseline scenario where greywater discharge is neglected. Eight scenarios were simulated to test the influence of rainfall dynamics and groundwater abstraction rates on the contribution of greywater disposal on freshwater lens thickness. The report then provides recommendations for future work to enhance the outcomes of future modelling efforts and the feasibility of indirect greywater reuse.
format	Report
author	Jazayeri, Amir Solórzano-Rivas, S. Cristina Sinclair, Peter Antoniou, Andreas Irvine, Dylan J. Werner, Adrian D.
author_facet	Jazayeri, Amir Solórzano-Rivas, S. Cristina Sinclair, Peter Antoniou, Andreas Irvine, Dylan J. Werner, Adrian D.
author_sort	Jazayeri, Amir
title	A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati
title_short	A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati
title_full	A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati
title_fullStr	A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati
title_full_unstemmed	A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati
title_sort	groundwater modelling investigation of greywater disposal : south tarawa, kiribati
publisher	World Bank, Washington, DC
publishDate	2019
url	http://documents.worldbank.org/curated/en/326841574137941944/A-Groundwater-Modelling-Investigation-of-Greywater-Disposal-South-Tarawa-Kiribati http://hdl.handle.net/10986/32766
_version_	1764477250979233792

A Groundwater Modelling Investigation of Greywater Disposal : South Tarawa, Kiribati

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