Sökning: "Sludge age"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Sludge age.
1. Use of the solids flux theory for activated sludge wastewater treatment process
Sammanfattning : .... LÄS MER
2. Properties of Activated Sludge Flocs
Sammanfattning : The quality of the effluent from activated sludge treatment plants is highly dependent on the efficiency of the solid-liquid separation process. The aim of this thesis was to study (i) the effects of dissolved oxygen (DO) concentration on effluent turbidity and flocculation, as well as on the settling properties of activated sludge, for both short term and long term scales, and (ii) the influence of aerobic microbial activity on the stability of activated sludge flocs. LÄS MER
3. Anaerobic digestion in the kraft pulp and paper industry : Challenges and possibilities for implementation
Sammanfattning : The pulp and paper industry is a large producer of wastewater and sludge, putting high pressure on waste treatment. In addition, more rigorous environmental legislation for pollution control and demands to increase the use of renewable energy have put further pressure on the pulp and paper industry’s waste treatment, where anaerobic digestion (AD) and the production of methane could pose a solution. LÄS MER
4. Realising full-scale control in wastewater treatment systems using in situ nutrient sensors
Sammanfattning : Abstract A major change in paradigm is taking place in the operation of wastewater treatment plants as automatic process control is becoming feasible. This change is due to a number of different reasons, not least the development of online nutrient sensors, which measure the key parameters in the biological nutrient removal processes, i.e. LÄS MER
5. Human salmonellosis : impact of travel and trade from a Swedish perspective
Sammanfattning : Background: Salmonellosis is one of the most important gastrointestinal infections in humans. The vast majority of Swedish Salmonella cases have acquired the disease abroad, reflecting both a large number of Swedish travellers and a very favourable domestic Salmonella situation compared to other countries, mainly due to various control programs implemented in the animal food production and import regulations (e. LÄS MER