AI Article Synopsis

  • Water scarcity is a significant issue globally, with retail water use accounting for up to 19% of public water supplies.
  • A study in southern Portugal examined the feasibility of rainwater harvesting systems for a retail store, analyzing water consumption from 2018 to 2021 and rainfall data from 1932 to 2008.
  • Results indicated that a properly configured rainwater harvesting system could save 32-36% of water usage, translating to financial savings of €330-372 monthly, highlighting the potential for such systems in retail to reduce water footprints.

Article Abstract

Water is a crucial resource for life, and it is increasingly scarce in many regions of the globe. In addition, retail water use is responsible for up to 19% of public water globally supplied. Hence, this study has set out to explore the technical and economic feasibility of rainwater harvesting systems as an alternative water source for a retail store located in southern Portugal. Water consumption data from 2018 to 2021 was collected from water bills, placing average monthly water consumption at around 400 m. Next, rainfall data was collected from the nearest meteorological station, comprising 54 years of daily rainfall data between 1932 and 2008 with an annual average of 685 mm. The simulation of a rainwater harvesting system was performed, resorting to the mass-balance model. The optimal tank size was found to be 100 m considering simply the relation with the relative water savings variation on the graph relating the water savings with the tank size. Results show that the simulated rainwater harvesting system would allow saving 32-36% of the water consumed, despite the store's location in a dry climate, representing a financial gain of €330-372 per month. Findings suggest a substantial potential for the technical and economic feasibility of rainwater systems in retail stores, which makes them relevant solutions to achieve important water-savings in the retail sector, thus positively influencing retailers' direct water footprint.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10067673PMC
http://dx.doi.org/10.1007/s11356-023-25137-yDOI Listing

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