| Author | Cha, Woo-suk |
| Call Number | AIT Thesis no. EV-97-11 |
| Subject(s) | Sewage--Purification--Activated sludge process
|
| 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 |
| Series Statement | Thesis ; no. EV-97-11 |
| Abstract | Granular activated carbon was added into SBR with the activated carbon dosage of 5
g/l, in order to find the buffer effect of GAC in SBR to the shock loadings. Pheol was fed to
the reactor as an only carbon source and the concentration of phenol in the influent was varied
suddenly with various high concentration to apply the shock loading.
Three types of shock loadings, long-term shock, short-term fluctuation, and step-wise
augmentation, were conducted to compare the responses of the simple SBR and the BACSBR. -
During the first long-term shock loading, the BAC-SBR showed good tolerance to the
sudden change of influent concentration, from 500 to 2000 mg/l, giving the effluent phenol
concentration of below 1 mg/l for first two-cycle time, i.e., 16 hours. The hourly change were
measured during the reaction time and it showed that the BAC played a role as a buffer at the
early stage of reaction period, about 30 to 60 minutes, by pulling down the high initial
concentration into lower level, which is acceptable to the biomass, with the help of activated
carbon adsorption.
Until the last operation of SBR, the BAC showed its bioregeneration power by
resulting in the continuous adsorption capcity for more than 20 days without changing or
refilling the activated carbon.
The maximum tolerable sludge loading rate was 3 percent and 17 percent higher in the
BAC-SBR at the influent phenol concentration of 2000 and 2500 mg/l, respectively. And the
additional mixing could give higher tolerable SLR even in the SBR as well as in the BAC-SBR. |
| Year | 1997 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-97-11 |
| 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) | Ishibashi, Yoshinobu; |
| Examination Committee(s) | Annachhatre, Ajit P. ;Visvanathan, C.; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1997 |