| Author | Mai Thanh Phong |
| Call Number | AIT Thesis no. EV-99-36 |
| Subject(s) | Water quality management--Vietnam--Hanoi
|
| Note | A thesis submitted in partial fulfilment of the requirement for the degree of Master of
Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Eutrophication and dissolved oxygen models are set up for the West Lake, the largest lake in
Hanoi, to estimate the water quality and evaluate restoration measures. Phytoplankton and
benthic vegetation growth reaches the maximum in summer due to high intensity of light,
while the oxygen concentration reaches lowest values due to high consumption and low
oxygen saturation. Diurnal variations of dissolved oxygen also are modelled. Diurnal changes
are highest in summer during phytoplankton bloom and low from late autumn to early spring.
The dissolved oxygen levels deplete to below 2 g/m3 at night during highest phytoplankton
bloom. With reductions of external nutrient input, the inorganic phosphorus decreases and this
significantly improves the water quality in the lake.
The models can be applied to estimate water quality of the lake. However, more data for
model calibration are needed to make the models better. |
| Year | 1999 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Dahl-Madsen, Karl Iver; |
| Examination Committee(s) | Chongrak Polprasert ;Zimmermann, Willi; |
| Scholarship Donor(s) | Thai King's Scholarship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1999 |