Waste/wastewater design (Contact: Mogens Henze and Ann Marie Eilersen)
In order to develop more sustainable waste handling, it is necessary to review the possibilities for redesigning waste products. In households faecal and kitchen waste can either be removed as a liquid wastewater or as a solid waste. Together with ability for regulating water consumption, this gives us the potential for designing waste handling. Waste design, with the aim of optimizing the reuse of nutrients and reducing the energy consumption, can result in major changes in the wastewater and solid waste handling technologies in the future.
Reuse of grey wastewater in household (Contact Ann Marie Eilersen and Eva Eriksson)
Potentials and problems related to recycling and reuse of grey wastewater in decentralized wastewater systems are evaluated. Focus is on chemical compounds and their impact on the hazards and risks related to reuse and recycling of grey wastewater at household or wider environmental scales. Needs for treatment are evaluated and different strategies for treatment are tested.
Chemical hazard assessment of wastewater (Contact Anna Ledin and Eva Eriksson)
Different handling strategies for urban waste streams are evaluated on the basis of hazard and problem identification. The aims are to identify the most important pollutants with respect to impact on the environment, hazards with respect to exposure to humans, and needs for treatment. Procedures are developed for screening of potentially hazardous compounds in urban waters. The procedures are based on inherent properties of chemicals with persistence, bioaccumulation, and toxicity as the main criteria.