Evaluation of groundwater quality and monitoring for Bangkok aquifer system | |
| Author | Jayakrishnan, Rajaraman |
| Call Number | AIT Thesis no.IR-92-13 |
| Subject(s) | Water, Underground--Quality--Mathematical models Water, Underground--Quality Aquifers--Thailand--Bangkok |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. IR-92-13 |
| Abstract | The quality of groundwater and the groundwater monitoring network in the three major aquifers of the Bangkok Aquifer System of Thailand were evaluated using geochemical and geostatistical methods. The different types of water indicating the dominant ions present in the aquifers were identified by the geochemical analyses. In the geostatistical analyses, variogram models fitted to represent the spatial variability of each quality variable were used to krige their observed concentrations in the entire study area. Critical zones of groundwater contamination were demarcated and the temporal trends of quality change were assessed. The results showed that the contamination of groundwater in the Bangkok aquifers was not widespread but was severe at specific locations. The possible reasons for the groundwater contamination at such locations are the presence of contaminating sources such as connate salt water or high mineral or metal content in the soil matrix within the aquifers. In general, the groundwater quality was found to be inferior in the coastal areas and in the areas west to the Chao Phraya River. The existing groundwater monitoring network in the study area was evaluated based on the identified critical zones of groundwater contamination. It was observed that the existing network did not suit the critical zones of groundwater quality. A new groundwater monitoring network was designed for the study area and it was economized by analyzing geostatistically different network arrangements. Two designs which gave satisfactory results were recommended for field application. |
| Year | 1993 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. IR-92-13 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Irrigation Engineering and Management (IR) |
| Chairperson(s) | Gupta, Ashim Das; |
| Examination Committee(s) | Vachi Ramnarong;Onta, Pushpa Raj;Schroder, Hans; |
| Scholarship Donor(s) | Government of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |