| Author | Agarwalla, Binod Kumar |
| Call Number | AIT Thesis no.EV-92-19 |
| Subject(s) | Sewage lagoons--Mathematical models
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | An integrated approach of de scribing the s ubstrate removal in
a facultative pond by s u s p ende d b i omass in the pond liquid and
biomass attached to the inner walls and pond bottom (biof ilm) was
attempte d. Mathematical models were developed to combine the
effect s of s uspe nded biomass and biof ilm on t h e s ubstr ate remova l
kinetics. Monod kinetics a nd first order kine tics were u sed in four
different combi nations in developing t he mode l s.
Batch experime n ts were conducted to determine the kinetic
coefficients for suspended biomass and biofilm separately. It was
found from t h e study t h at t h e maximum substrate utilization rates ,
under the conditions of facultative pond, were approximately 8
times l ower than the typical valu e report ed i n t h e literature for
activated s ludge process.
The de ve lope d mode l s were tested with the data obtained from
a n AIT facultative pond, a nd a facultative pond l ocated i n New
Mex i co , USA, moni tored for one year . It was found from the study
that, the efflu e n t BOD5 predicted from the mode l u sing f irst order
kinetics for both s u spended biomass and biofilm, fits reasonably
we ll with the experimental data from a facultative pond of AIT
campus and a pond of Ne w Mexico, U.S . A.
A design c hart was prepared based on the model using first
order kinetics for both s u spended biomass and biofilm. An examp l e
was included t o design a f acultative pond based on BOD5 remova l
efficiency and incorporating t h e e ffect of biof ilm in the design
procedure. |
| Year | 1992 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-92-19 |
| 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) | Chongrak Polprasert |
| Examination Committee(s) | Schroder, Hans;Visvanathan, C. |
| Scholarship Donor(s) | CIDA |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1992 |