Search for dissertations about: "activated sludge simulation."

Showing result 1 - 5 of 12 swedish dissertations containing the words activated sludge simulation..

2. 1. Modelling Aspects of Wastewater Treatment Processes

   Author : Ulf Jeppsson; Industriell elektroteknik och automation; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automatiska system; control engineering; robotics; Automation; thickening; solids flux; simulation; secondary clarifier; protozoa; predators; parameter estimation; model reduction; model identifiability; mathematical modelling; clarification; biofilm; activated sludge; robotteknik; reglerteknik;

   Abstract : Wastewater treatment processes are inherently dynamic because of the large variations in the influent wastewater flow rate, concentration and composition. Moreover, these variations are to a large extent not possible to control. READ MORE

4. 2. A Chemometric Approach to Process Monitoring and Control - With Applications to Wastewater Treatment Operation

   Author : Christian Rosén; Industriell elektroteknik och automation; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; robotics; Automation; Elektroteknik; Electrical engineering; wastewater treatment; supervisory control; simulation; process monitoring; principal component analysis PCA ; multivariate statistics; modelling; activated sludge; detection; control engineering; Automatiska system; robotteknik; reglerteknik; Environmental technology; pollution control; Miljöteknik; kontroll av utsläpp;

   Abstract : In this work, various aspects of multivariate monitoring and control of wastewater treatment operation are discussed. A number of important difficulties face operators and process engineers when handling online measurements from wastewater treatment processes. READ MORE

5. 3. Control of Nitrogen Removal in Activated Sludge Processes

   Author : Pär Samuelsson; Bengt Carlsson; Gustaf Olsson; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; activated sludge process; non-linear control; external carbon addition; multivariable control; cost-efficient operation; feedforward control; simulators; Automatic control; Reglerteknik; Reglerteknik; Automatic Control;

   Abstract : More stringent requirements on nitrogen removal from wastewater are the motivation for this thesis. In order to improve treatment results and enhance cost-efficient operation of wastewater treatment plants, model based control strategies are presented. A Java based simulator for activated sludge processes (JASS) is presented. READ MORE

6. 4. Urban water management : Modelling, simulation and control of the activated sludge process

   Author : Mats Ekman; Bengt Carlsson; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automatic Control; Reglerteknik;

   Abstract : During the last few decades, wastewater treatment processes in urban water management have become more and more efficient and complex. Several factors such as urbanization, stricter legislations on effluent quality, economics, increased knowledge of the involved biological, chemical and physical processes as well as technical achievements have been important incentives for the development of more efficient procedures for wastewater treatment plants. READ MORE

7. 5. Carbon utilisation for extended nitrogen removal and resource savings

   Author : Tobias Hey; Avdelningen för kemiteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; primary sludge hydrolysis; carbon source; energy; resources; denitrification; environment; economy; volatile fatty acids; multiple pH point titration; wastewater treatment; activated sludge simulation.;

   Abstract : A full-scale in-line primary sludge hydrolysis experiment was conducted in one out of four primary settlers at the Klagshamn Wastewater Treatment Plant (WWTP) to test if the wastewater quality can be improved in terms of providing easily accessible carbon for possible pre-denitrification and the reduction of external carbon sources. The amount of easily accessible carbon produced, in the form of the volatile fatty acid (VFA), alkalinity and ammonium concentrations, was measured throughout the entire full-scale experiment at the outlet of the hydrolysis tank and that of the ordinary primary settler, which served as a reference line. READ MORE