NDLI: Effect of Inlet/Outlet Configuration on Water Quality in a Rainwater Harvesting Tank

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Effect of Inlet/Outlet Configuration on Water Quality in a Rainwater Harvesting Tank

Content Provider	MDPI
Author	Dissanayake, Janith Han, Mooyoung
Copyright Year	2020
Description	Rainwater harvesting (RWH) has attracted global attention as a solution for the urban water crisis; however, the water quality can be impacted by particulate matter and soluble contaminants. Therefore, the inlet and outlet configurations of the storage tank should be designed to minimize bottom sediment resuspension and prevent the transport of soluble contaminants. Thus, this study investigated the effects of the inlet and outlet configurations of a rainwater storage tank on particle resuspension and residence time distribution for an instantaneous input of a conservative tracer. It was observed that J type inlets can reduce sediment resuspension by more than 50% while detaining and mixing a conservative pollutant, thus preventing the concentration from reaching the outlet as a plug flow. Although inlet height did not have a significant influence on the quality of water at the outlet, parameters such as inflow velocity and outlet height exerted a considerable influence on sludge resuspension and residence time distribution. The experiments also highlighted the importance of regulating the initial water level of the storage tank and regular flushing of bottom sediment to maintain the stored water quality.
Starting Page	1970
e-ISSN	20734441
DOI	10.3390/w12071970
Journal	Water
Issue Number	7
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2020-07-12
Access Restriction	Open
Subject Keyword	Water Water Science and Technology Rainwater Harvesting Water Quality Particle Resuspension Residence Time Inlet/outlet Configurations
Content Type	Text
Resource Type	Article

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