Improving the Efficiency and Environmental Friendliness of Urban Stormwater Management by Enhancing the Water Filtration Model in Rain Gardens

Rain gardens are used to solve urban problems related to the negative impact of stormwater. (1) Scientific contributions from different countries provide general guidelines for the design and operation of rain gardens in different geographical areas. Given the small spatial scale of rain gardens, th...

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Bibliographic Details
Published in:Water (Basel) 2024-05, Vol.16 (10), p.1316
Main Authors: Kravchenko, Maryna, Trach, Yuliia, Trach, Roman, Tkachenko, Tetiana, Mileikovskyi, Viktor
Format: Article
Language:English
Subjects:
basins
Climate change
climatic zones
Design
Drainage
Efficiency
filtration
Fluid dynamics
gardens
Gardens & gardening
hydrodynamics
hydrologic models
Hydrology
Permeability
Rain
Rain-water (Water-supply)
Runoff
Sewer systems
stormwater
Stormwater management
watersheds
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Summary:Rain gardens are used to solve urban problems related to the negative impact of stormwater. (1) Scientific contributions from different countries provide general guidelines for the design and operation of rain gardens in different geographical areas. Given the small spatial scale of rain gardens, the use of existing infiltration models often leads to design errors. (2) The purpose of this paper is to develop a hydrological model by introducing a system of equations that extends the ability to calculate the rate, flow rate and time of saturation of layers with moisture and rainwater leakage from the rain garden system. (3) The results obtained allow us to describe the dynamic processes of passage and saturation of layers of the rain garden at a certain point in time, which extends the ability to calculate the flow rate. It was established that the smaller the area of the rain garden compared to the area of the catchment basin, the faster it reaches its full saturation. Increasing the thickness of the rain garden layers allows for an increase in the efficiency of water retention at a lower value of the area ratio. (4) The practical significance of the results obtained is especially important for the correct description of hydrodynamics in the system and determining the optimal conditions for the effective functioning and management of the rain garden structure for any climatic region.
ISSN:2073-4441
2073-4441
DOI:10.3390/w16101316