Simultaneous removal of chemical oxygen demand and nitrate in aerobic treatment of sewage wastewater using an immobilized photosynthetic bacterium of porous ceramic plates |
| |
| Authors: | Nagadomi H Takahasi T Sasaki K Yang HC |
| |
| Institution: | (1) Nagao Co. Ltd., 221, Miyaura, Okayama, 702-8014, Japan;(2) Materials Science and Engineering, Graduate School of Hiroshima-Kokusai Gakuin University, 6-20-1, Nakano, Akiku, Hiroshima, 739-0321, Japan;(3) Food Processing, Graduate School of Biotechnology, Korea University, 5-1, Anam-dong, Sungbukku, Seoul, 136-701, Korea |
| |
| Abstract: | A denitrifying photosynthetic bacterium (PSB), Rhodobacter sphaeroides S was immobilized on a porous ceramic plate (10 ×10×0.5cm) using a small amount of agar. In the bioreactor (3.5 l liquid) using this plate, repeated batch treatments of sewage wastewater (acetic acid as a carbon source) were carried out under aerobic conditions (DO 5mg/l) for two weeks. The simultaneous and effective removal of chemical oxygen demand (COD), ammonium, and nitrate was observed. In continuous treatment at a relatively high dilution rate of 0.20 h–1 (retention time, five hours), the same simultaneous treatments were observed for about one month. |
| |
| Keywords: | Cell immobilization denitrification photosynthetic bacteria porous ceramic plate simultaneous removal of nitrate |
| 本文献已被 SpringerLink 等数据库收录！ |
|
