Modeling of non-point source pollution in the Mun River Basin, Thailand | |
| Author | Akter, Aysha |
| Call Number | AIT Thesis no.WM-04-06 |
| Subject(s) | Water quality--Thailand--Mun River Basin Water--Pollution--Thailand--Mun River Basin--Point source identification |
| Note | A thesis submitted in pa1tial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Increased pollution sources due to changing land uses in river basin and excessive nutrient application in agricultural fields leads to instream water quality degradation. In order to understand the impact of basins land use changes, this study is undertaken to monitor and model water quality in the Mun River. The study performs a weekly water sampling at four stations along the Mun River and their laboratory tests for seven selected water quality parameters from April 2004 to October 2004. Historical water quality data covering the physicochemical, biological and heavy metals for eleven years (1993 to 2004) are collected. Hydro-meteorological and sediment concentration data for the fifteen years (1990 to 2004) is used to analyze the hydrologic behavior of the basin. The spatial and temporal data for the basin is used to set up a mathematical model using the Better Assessment Science Integrating Point and Nonpoint Sources (BASINS 3.1) model. The secondary water quality data analysis shows higher concentrations of physicochemical, biological, heavy metals and pesticides in the wet season compared to the dry season. The ratio of TN and TP is found to be 3.12 in the upper and 3.28 in the lower parts of the Mun River Basin whereas the ratio is about 2 in the middle part. The relationships are established for the rainfall-runoff, runoff-sediment concentration for the basin, and also for the rainfall total nitrogen and rainfall-total phosphate for the upper and middle parts of the basin. A hydrologic model to simulated runoff and sediment processes is developed using the Hydrologic Simulation Program FORTRAN (HSPF) module under the BASINS 3.1 model. The model is calibrated and validated using the observed data. |
| Year | 2005 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Babel, Mukand Singh;Gupta, Ashim Das |
| Examination Committee(s) | Clemente, Roberto S.;Dutta, Dushmanta |
| Scholarship Donor(s) | Government of the Netherlands |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2005 |