| Author | Bernardino, Artemio |
| Call Number | AIT Thesis no. 629 |
| Subject(s) | Water--Pollution--Chao Phya 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 | One of the factors which determines whether anaerobic conditions will occur in the Chao Phya River in Bangkok or not is the dissolved oxygen and BOD concentration of the water entering the downstream reach
from upstream. The amount of BOD added to the river in Pathumthani Province and the dissolved oxygen level in the stream was the main focus
of this research. The pollqtional contributions of industry, khlongs, and houses along
the river banks were determined. Industry was found to be the major source of pollution accounting for at least 73% of the total. Khlongs were found to be relatively unpolluted. The dissolved oxygen in the Chao
Phya river in Pathumthani was found to be low relative to the saturation value. The big drop in dissolved oxygen was found to have occurred upstream of Km. 90. The BOD concentration in the river was found to be very low indicating that the river is relatively unpolluted in the reach
in Pathumthani. The deoxygenation rate constant of the river was found to be much higher than the laboratory rate of deoxygenation constant.
Using an oxygen balance method, a value of 0.31 per day was found for the
deoxygenation rate constant for a flow rate o~ 500 m3 /sec. The deoxygenation rate constant increased with discharge.
Pesticide analysis of water samples taken from the river showed that pesticide pollution does not exist in the river at the present time. |
| 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. |
| Examination Committee(s) | Yang, Yi Ping ; Htun, Maung Nay |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1974 |
