| Author | Sutharkar, Kadiravelu |
| Call Number | AIT Thesis no.EV-81-6 |
| Subject(s) | Septic tanks
|
| 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 | This study was aimed at evaluating the performance of an integrated system of septic tank and anaerobic upflow filter called the 'septic tank-AUF' as an onsite domestic waste treatment alternative and to investigate the effectiveness of the AUF in providing further treatment of the septic tank effluent. Two full-scale units employed in this study yielded more than 90% removal efficiencies of TCOD, TSS, VSS and more than 75% SCOD reduction with respect to mean septic tank influent concentrations of about 1,600
mg/l TCOD, 1,250 mg/l TSS, 775 mg/l VSS and 340 mg/l SCOD, respectively, at the system detention time (6SYS) of 4. 5 days and a mean influent organic loading of 0.5 kg COD/m3/d. The AUFs yielded more than 60%, 40%, 70% and
65% reductions in TCOD, SCOD, TSS and VSS, respectively, for the corresponding mean septic tank effluent concentrations of about 310 mg/l, 180 mg/l,
170 mg/l and 110 mg/l respectively. It was found that a 1 day 0 AUF corresponding to a hydraulic loading of 0.43 m3/m2/d was optimal for the AUF. Mathematical relationships between J/A and S0 were established for the AUF
in terms of TCOD and SCOD . Engineering application of this relationship in terms of SCOD was presented in a graphical form as a guideline for the
design of AUF. |
| Year | 1981 |
| 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 and Management (EV) |
| Chairperson(s) | Chongrak Polprasert; |
| Examination Committee(s) | Watanabe, Yoshimasa ;Lohani, B.N.; |
| Scholarship Donor(s) | Royal Netherlands Government; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1981 |