| Author | Koirala, Ramesh |
| Call Number | AIT Thesis no. EV-87-13 |
| Subject(s) | Sewage--Purification--Filtration
|
| Note | A thesis submitted in partial fulfillment of the requirements for
the degree of Master of Engineering, School of Environment, Resources and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | A laboratory- scale AF was studied to find the effect of
various design parameters i.e. hydraulic loadings & hydraulic
retention times , influent concentrations and filter depths on the
performance of AF. The AF was fed with commercial grade glucose
synthetic waste. The effects of the se de sign parameters were
measured in terms of COO removal efficiency and gas production . The ratio of methane to carbon dioxide in the gas produced was
also found out by using Gas Chromatograph (Sichromat 2 , made in
Germany),
The COO removal efficiency decrease d with the increase in
hydraulic loading. The gas produced per kg of COO removed also
decreased with the increase in hydraulic loading.
The inverse relationship proposed by YOUNG and
McCARTYC1 968) did not exist in higher values of HRTs C144-24h) . But , it held good after a HRT value of 24h up to 6h. Hence , a
relations hip , based on the regression analysis of experimental
values , was proposed between the COO removal efficiency an d the
HRT for HRT range of 24-6h. The gas production was also affected
by the variation of HRT values .
The change in influent concentration at a constant
hydraulic loading did not have significant effect on the COO
removal efficiency and gas production capacity of the AF. It did
not show any significant effect on the methane content or gas
al so.
A filter depth of 120 cm was found to be sufficient enough
to provide COO removal efficiency of 97 . 2- 72.2% at hydraulic
loading range of 0.11 -2.7 m3 /(n12 .d) and an average influent
concentration of 3000 mg/L of synthetic waste (glucose being the
ma in substrate) • |
| Year | 1987 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Vigneswaran, Saravanamuthu
|
| Examination Committee(s) | Hanaki, K. ;Samorn Muttamara
|
| Scholarship Donor(s) | Royal Government of the Netherlands |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |