| Author | Naqibullah |
| Call Number | AIT Thesis no. EV-84-9 |
| Subject(s) | Sewage lagoons
|
| 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 |
| Abstract | Combined treatment of septage and wastewater, was
investigated in a series of pilot-scale waste stabilization ponds
(WSP) , under ambient conditions.
The system consisted of three ponds in series, a facultative pond followed by two aerobic ponds. Septage was fed manually to the facultative pond (pond 1) at 0%, 23, 10%, and 20% of wastewater volume.
The pond performance in term of physical, chemical. and
biological characteristics of the effluent was evaluated. The
results of the experiment snowed that a mixing ratio of 10 part of septage with 90 part of wastewater. was optimum, corresponding to a 78.4% reduction in BOD and 99.9% removal of fecal coliforms
The septage addition to the pond contributed nutrients to the pond water, resulting faster algal growth as was evidenced by chlorophyll-a concentrations .
Septage was found. to exert a significant influence on the
BOD-removal kinetics. An attempt was made to describe this effect in the form of a mathematical model. The developed
mathematical model was verified using the data of the present study and the data reported by ARIFIN (1982) .The model showed a considerable agreement between the predicted and experimental value of the K with a correlation coefficient of O. 9596.
This empirical. relationship can be used to design a single-cell
pond receiving septage mixed with wastewater. A design example illustrating the model application is presented. |
| Year | 1984 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Chongrak Polprasert |
| Examination Committee(s) | I, Fude ; Vigneswaran, Saravanamuthu
|
| Scholarship Donor(s) | World He a lth organization (W.H.O.) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1984 |