| Author | Gnanendran, S. K. |
| Call Number | AIT RSPR no. IE-84-9 |
| Subject(s) | Water quality management--Mathematical models
|
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The problem of selecting treatment efficiencies along a river basin such that a stream dissolved oxygen (DO) standard is maintained at minimum cost to the whole region, is approached using probabilistic modelling techniques.
The first model that is proposed recognizes streamflow as a random variable.
The simplicity of the deterministic mesh type formulation is retained but
with chance constraints on the quality level in the stream. The deterministic . equivalents of these chance constraints turn out to be linear, thus assuring
simple solution techniques.
A transformation rule is derived which makes t he extension of this model to a higher number of reaches relatively easy. A second model that is proposed
considers wastewater flow too as a random variable. Both models do not require a priori knowledge of initial DO deficits at the top of intermediate reaches of the river, thus removing the main drawback of previous chance constrained
approaches in the literature.
The model is tested on a 7-reach problem and the results compare very favourably with previous studies. |
| Year | 1984 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Industrial Engineering (IE) |
| Chairperson(s) | Fujiwara, Okitsugu
|
| Examination Committee(s) | Clarke Harry R. ; Ohgaki, Shinnichiro ; Krisorn Jittorntrum
|
| Scholarship Donor(s) | The Government of the Federal Republic of Germany
(German Academic Exchange Service - DAAD) |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1984 |