Sustainable water reuse in Kalmar
| Reference number | |
| Coordinator | KALMAR VATTEN AB - RENINGSVERK TEGELVIKEN |
| Funding from Vinnova | SEK 500 000 |
| Project duration | November 2018 - August 2019 |
| Status | Completed |
| Venture | Challenge-Driven Innovation – Stage 1 initiation |
Important results from the project
The aim with the project is to study legal, economic and technical pre-conditions as well as environmental and health issues for reuse of reclaimed water (treated wastewater) in society. The goal has been achieved by specification and study of three possible scenarios for reuse.
Expected long term effects
The scenario with technical water for urban use (in industry and for urban irrigation, toilet-flushing and small-scale cultivation of crops) is assessed to be a relevant demonstration project for a sustainable water system. The expected effects are the following: - a significant message that leads to better awareness among society, city planning and businesses regarding the value of potable water and need for water savings - a direct reduction of use of potable water in Kalmar with 1-2.5% depending on season.
Approach and implementation
The project was carried out in accordance with the original project set-up: In a first step, a user analysis was carried out. Current laws and requirements in EU and Sweden, touching the topic of reclaimed water, were listed. Based on the results from these studies, three different scenarios were specified, and studied with focus on current or required legal, economic and technical pre-conditions as well as environmental and health issues . Life cycle costs for one cubicmeter of water (investment and operation during 100 years) have been calculated to 3 to 25 SEK, depending on scenario.