| Author | Singh, Kripa Shanka |
| Call Number | AIT Thesis no.EV-92-13 |
| Subject(s) | Sewage--Purification--Activated sludge process
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering
|
| Publisher | Asian Institute of Technology |
| Abstract | The feasibility of anaerobic treatment for low strength domestic wastewater
was investigated using a semi-pilot scale UASB reactor of 126 l volume and
4 m height. This experiment was a continuation of the previous experiment
conducted by Lalit Agrawal and H. Harada. The domestic digested sludge was
used as seeding. The results reveals that an anaerobic treatment such as
UASB is effective in treating domestic wastewater and is able to maintain a
large amount active microorganism and effective removal of TSS. The duration
of the present experiment was about 7 months.
About 92% .COD reduction can be achieved under ambient temperature with
a HRT of 3 hr and organic loading of 4 kg-COD/m3
- d. The average methane
production was 141 Nl/kg-COD removed. This process also gave a high
removal efficiency of COD(about 90 %) for lower strength of 300 mg-COD/L
According· to the results obtained, the anaerobic treatment of domestic
wastewater appears to be an attractive proposition for tropical countries.
A morphology of sludge was examined by Scanning Electron Microscopy and
Transmission Electron Microscopy. The granular sludge contained diverse
groups of microorganisms whereas rod- type Methanothrix-like cells prevailed
inside the granules. |
| Year | 1992 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-92-13 |
| 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) | Harada, Hideki |
| Examination Committee(s) | Fujii, Shigeo;Chongrak Polprasert;Bhattarai, Kiran Kumar |
| Scholarship Donor(s) | The Royal Thai Governme nt |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1992 |
| Contributor(s) | Fujii, Shigeo; |