| Author | Chongrak Polprasert |
| Call Number | AIT Thesis no. 637 |
| Subject(s) | Water--Pollution--Quae Yai River
|
| Note | A thesis submitted-in partial fulfillment of the requirements for the degree of Master of Engineering in the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | An ecological reconnaissance of the proposed Hydro-electric Dam scheme on the Quae Yai River carried out by McGARRY and others (1972) indicated potential heavy metal contamination of the reservoir from the operation of lead mining and processing within the reservoir basin. This might result in bio-concentration of such metals as lead and cadmium in the biota. Heavy metal pollution surveys of water, soils, and biological samples within the Quae Yai basin and elsewhere in Thailand (to obtain background data) were conducted between April 1973 and February 1974. Samples were analyzed for lead, cadmium, copper and zinc. An ecological survey was carried out along Huai Khitti, a tributary of the Quae Yai River, which is the first stream to receive the tailings effluent from the mine\' s
flotation concentration plant. A study of the effects of lead and cadmium on people was also carried out at the Bo Ngam mine and in the slag washing area. A laboratory investigation of methods for heavy metal
removal from the tailings effluent and water was conducted.
It was concluded that Man, fish and other aquatic biota in the Quae Yai basin do not suffer excessive harmful effects from heavy metal pollution. However, the subclinical effects of chronic intake and exposure to current heavy metal levels in the water and soil are unknown. The
need to reduce heavy metals reaching the Quae Yai river is discussed with relevance to case studies of Huai Khitti and the Bo Ngam slag washing area. Laboratory results suggest that settling ponds can be adopted satisfactorily for the treatment of the effluents. |
| Year | 1974 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Pescod, M.B. ;Mcgarry, M.G. |
| Scholarship Donor(s) | United Kingdom Government |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1974 |
