Abstract
Original language  English 

Qualification  Doctor Degree 
Awarding Institution 

Award date  9 Oct 1987 
Place of Publication  Espoo 
Publisher  
Print ISBNs  9513829561 
Publication status  Published  1987 
MoE publication type  G4 Doctoral dissertation (monograph) 
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Keywords
 waste disposal
 waste treatment
 municipal engineering
 management systems
 cost control
 mathematical models
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Mathematical model for strategy evaluation of municipal solid waste management systems : Dissertation. / Kaila, Juha.
Espoo : VTT Technical Research Centre of Finland, 1987. 75 p.Research output: Thesis › Dissertation
TY  THES
T1  Mathematical model for strategy evaluation of municipal solid waste management systems
T2  Dissertation
AU  Kaila, Juha
PY  1987
Y1  1987
N2  A mathematical model for strategy evaluation of municipal solid waste management systems has been developed.The basic objective in model development has been to create a tool for practical strategy evaluation applications.The model is more compre hensive than earlier models in taking into account all the functional elements of a waste management system.Thus a wider range of technical alternatives and possible policy decisions and their effects can be analysed.In addition to the general model formulation, costs and performance of functional elements are presented.These include onsite storage of waste, waste collection and transport in collection vehicles, intermediate waste handling, transport between sites and processes, garages, and final disposal. The basic structure of the model is, how ever, flexible in being independent of the detailed cost and performance functions of functional elements.Many different types of cost functions can be used without a need to change the solution algorithm.The solution algorithm is heuristic.For solution search the system has been divided into two interconnected subsysterns.These are the collection and transport system and the processing and disposal system.The solution search is done iteratively by seeking a solution for both subsystems in sequence until the solutions are consistent.The solution algorithm has been tested with data from four different applications and the results have been compared with the best results obtained with other models used in these applications.The algorithm gave good results in all tests.The best result obtained in each example was probably the optimum solution or very close to it.The algorithm is also fast in finding solutions for large problems because the number of iterations in solution search is almost independent of the size of the problem.The model has been applied several times during actual planning processes.In all these cases the use of the model has produced necessary information for further development of plans.One of the cases is described as an example of how the model can be used in practice.
AB  A mathematical model for strategy evaluation of municipal solid waste management systems has been developed.The basic objective in model development has been to create a tool for practical strategy evaluation applications.The model is more compre hensive than earlier models in taking into account all the functional elements of a waste management system.Thus a wider range of technical alternatives and possible policy decisions and their effects can be analysed.In addition to the general model formulation, costs and performance of functional elements are presented.These include onsite storage of waste, waste collection and transport in collection vehicles, intermediate waste handling, transport between sites and processes, garages, and final disposal. The basic structure of the model is, how ever, flexible in being independent of the detailed cost and performance functions of functional elements.Many different types of cost functions can be used without a need to change the solution algorithm.The solution algorithm is heuristic.For solution search the system has been divided into two interconnected subsysterns.These are the collection and transport system and the processing and disposal system.The solution search is done iteratively by seeking a solution for both subsystems in sequence until the solutions are consistent.The solution algorithm has been tested with data from four different applications and the results have been compared with the best results obtained with other models used in these applications.The algorithm gave good results in all tests.The best result obtained in each example was probably the optimum solution or very close to it.The algorithm is also fast in finding solutions for large problems because the number of iterations in solution search is almost independent of the size of the problem.The model has been applied several times during actual planning processes.In all these cases the use of the model has produced necessary information for further development of plans.One of the cases is described as an example of how the model can be used in practice.
KW  waste disposal
KW  waste treatment
KW  municipal engineering
KW  management systems
KW  cost control
KW  mathematical models
M3  Dissertation
SN  9513829561
T3  Technical Research Centre of Finland. Publications
PB  VTT Technical Research Centre of Finland
CY  Espoo
ER 