Reduced energy consumption and improved nitrogen removal by using more effective aeration
In this study, an aeration volume control strategy for an activated sludge process is evaluated in a pilot plant at Hammarby Sjöstad in Stockholm, Sweden. The main idea has been to let the DO concentration in some of the aerated compartments be determined by the DO concentration in other compartments. In this way only sensors […]
Phosphorus recovery by use of sludge fractionation
In working towards a sustainable society, recycling and recovery of products together with handling of scarce resources must be considered. The growing quantities of sludge from wastewater treatment plants and the increasingly stringent restrictions on landfilling and on agricultural use of sludge are promoting other disposal alternatives. Sludge fractionation, providing sludge volume reduction, product recovery […]
sewsys – ett verktyg för att bestämma källor till dagvattenföroreningar och pröva olika åtgärder / SEWSYS – a tool for analysis of stormwater pollution sources and evaluation of abatement strategies
Stormwater is known to be a potentially large contributor of toxic substances to receiving waters. To be able to model scenarios related to abatement strategies and quality source control, i.e. reducing the pollutants at the source, a substance flow modelling tool has been developed. The computer model is called SEWSYS and themodelling framework incorporates generation […]
Wastewater treatment with microalgae – a literature review
Microalgae can be used for tertiary treatment of wastewater due to their capacity to assimilate nutrients. The pH increase which is mediated by the growing algae also induces phosphorus precipitation and ammonia stripping to the air, and may in addition act disinfecting on the wastewater. Domestic wastewater is ideal for algal growth since it contains […]
Forskningsprogrammet Urban Water – resultat, tillämpningar och Fortsatt Utveckling / The research programme Urban Water – results, implementation and Further Development
The Urban Water programme (www.urbanwater.org) has been a long-term integrated research programme including senior researchers and PhD students from 9 Swedish universities.The central question was whether future sustainable water and wastewater systems will be improved versions of today’s, or if there would be radical changes. The programme aimed to develop a “toolbox” for strategic planning. […]
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xxForskningsprogrammet Urban Water – resultat, tillämpningar och Fortsatt Utveckling / The research programme Urban Water – results, implementation and Further Development
The Urban Water programme (www.urbanwater.org) has been a long-term integrated research programme including senior researchers and PhD students from 9 Swedish universities.<br>The central question was whether future sustainable water and wastewater systems will be improved versions of today’s, or if there would be radical changes. The programme aimed to develop a “toolbox” for strategic planning. […]