Study on acidogenesis in fluidized bed process | |
| Author | Swaminathan, Renuka |
| Call Number | AIT Thesis no.EV-85-25 |
| Subject(s) | Sewage--Purification--Biological treatment Fluidization |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | An experimental study of application of the fluidized bed to the anaerobic digestion of the distillery waste has been conducted. The acid phase was successfully obtained by the kinetic control. The floc in the digester exhibits an excellent settling property. Microscopic examination reveals that the flocs are composed of rod shaped bacteria linking the solids from the waste together. Scattering among the flocs, denser and lighter closured floc of a superior settling settling characteristics was observed and measured upto 3 mm in size. These dense flocs seemed to be colonies of rod shaped bacteria. Operating under natural pH of 4.5, the hydraulic detention time exerts a great influence on the volatile acid distribution. The detention time of 7.5 h was found to give the best volatile acid production. The pH was also found to be another important parameter in controlling the production and distribution of volatile acid in the digester. The values around 6.5 offers the best volatile acid production with a stable product distribution. Regarding the loading of the waste, it was found that the optimum volatile acid production was between the loadings of 150 to 240 kg/m3-d. Here the fluidized bed was successfully used in the separation of Solid Retention Time from Hydraulic Retention Time maintaining the biomass within the column. |
| Year | 1985 |
| 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) | Nguyen, Cong Thanh |
| Examination Committee(s) | Samorn Muttamara ;Lohani, B.N. |
| Scholarship Donor(s) | Government of Japan |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1985 |