Paper
COD Removal Performance of Fluidized Bed Bioreactor (FBBR) with Support Material of Precipitation Carbonate Calcium (PCC)
- Authors:
- Khoshrooz. Kazemi; Alireza. N. Alavi; Somaye. Yaghoubkhani; Jamalledin Hashemian
- Abstract
- The anaerobic digested solid wastewater in an aerobic fluidized bed reactor with precipitation Calcium carbonate as support material was investigated in this work. Fluidization of Precipitation Calcium Carbonate particles is achieved by air velocity which is used in conventional activated sludge process. Fluidization does not need upward flow of recirculated liquid and high air velocity. The fluidized bed bioreactor (FBBR) effluent was studied for alterations in Chemical Oxygen Demand (COD). Continuous flow investigations were conducted with the influent COD at 3000, 5000 and 7000 mg/l in 3hr, 6hr and 12 hr Hydraulic Retention Time (HRT). The filtered COD reduction efficiency for the different wastewater inputs were: 92% for 3000mgCOD/l with 12hr HRT; 90% for 5000mgCOD/l with 12hr HRT; 73% for 5000mgCOD/l with 6hr HRT; 20.9% for 5000mgCOD/l with 3hr HRT; 84% for 7000mgCOD/l with 12hr HRT; and 50.87 for 7000mgCOD/l with 12hr. Results for reactor without support media were: 74% for 3000 mgCOD/l with 12hr HRT; 62% for 5000mgCOD/l with 12hr HRT and 52% for 7000mgCOD with 12hr HRT. Reactor without support media lost its efficiency in short Hydraulic Retention Time (HRT).. This research demonstrated that a fluidized bed reactor with Precipitation Calcium Carbonate support media can be operated to maximize substrate removal. Precipitation Calcium Carbonate as support material can be used for biofilm formation to increase COD removal performance and decrease hydraulic retention time in existent activated sludge wastewater treatment plant.
- Keywords
- FBBR, COD Removal, HRT, Precipitation Calcium Carbonate
- StartPage
- 31
- EndPage
- 35
- Doi