Sökning: "sludge handling"
Visar resultat 1 - 5 av 19 avhandlingar innehållade orden sludge handling.
1. Improved life cycle assessment of wastewater and sludge management with resource recovery
Sammanfattning : Around the world every day, large amounts of wastewater are treated before release, to avoid impacts on humans and the environment. The treatment requires resources in the form of energy and chemicals, and it generates large amounts of sewage sludge, however, it can also serve as a source of energy, nutrients and carbon. LÄS MER
2. Phosphorus release from sewage sludge by use of acids and bases
Sammanfattning : .... LÄS MER
3. Microbial risk assessment and its implications for risk management in urban water systems
Sammanfattning : Infectious disease can be transmitted via various environmental pathways, many of which are incorporated into our water and wastewater systems. Quantitative microbial risk assessment (QMRA) can be a valuable tool in identifying hazard exposure pathways and estimating their associated health impacts. LÄS MER
4. Phosphorus release and recovery from treated sewage sludge
Sammanfattning : 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. LÄS MER
5. Forest industry sludge as a resource for energy recovery
Sammanfattning : Forest industries produce large amounts of carbon rich sludges as by-products in their processes. Presently sludge is treated as a poor quality biofuel for co-incineration, some mills treat it solely as a disposal problem. This thesis provides an introduction to production, composition and disposal issues of sludge. LÄS MER