Large-scale rainwater catchment system

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ID
147473
Owner
DTU
Uploaded by
WIPO GREEN Admin
Type
Technology
Source
User uploads
Published
2022/09/30
Updated
2022/11/22
Email Owner
DTU
System for use of treated rainwater to run washing machines and flush their toilets.
Residents of a new housing estate Nye in Aarhus, Denmark, are using treated rainwater for their washing machines and toilets. The project was carried out by Aarhus Vand, a public utility water company. The technology consists of a system where rainwater collected from roofs is drained into a basin, or artificial lake, together with other rainwater and surface water flows. A water treatment plant located near the basin filters the water to a good standard. From the plant, this water is channeled first into water reservoirs then into homes via a separate piping system for use by washing machines and toilets. By reusing treated rainwater on a larger scale, up to 40 percent of drinking water is saved.

Getty Images /© San Francisco Chronicle/Hearst Newspapers via Getty Images / Contributor
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