TY  - SER
AU  - Agarwalla,Binod Kumar
AU  - Chongrak Polprasert,
AU  - Schroder,Hans
AU  - Visvanathan,C.
ED  - CIDA,
TI  - Application of biofilm model in facultative pond design
T2  - Thesis
PY  - 1992///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Sewage lagoons
KW  - Mathematical models
N1  - A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering; Thesis (M.Eng.) - Asian Institute of Technology, 1992
N2  - 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.
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B16653
ER  -