Simultaneous removal of chemical oxygen demand and nitrate in aerobic treatment of sewage wastewater using an immobilized photosynthetic bacterium of porous ceramic plates

被引：47

作者：

Nagadomi, H

Takahasi, T

Sasaki, K

Yang, HC

机构：

[1] Nagao Co Ltd, Okayama 7028014, Japan

[2] Hiroshima Kokusai Gakuin Univ, Grad Sch, Hiroshima 7390321, Japan

[3] Korea Univ, Grad Sch Biotechnol, Seoul 136701, South Korea

来源：

WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY | 2000年 / 16卷 / 01期

关键词：

cell immobilization; denitrification; photosynthetic bacteria; porous ceramic plate; simultaneous removal of nitrate;

D O I：

10.1023/A:1008947416198

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

A denitrifying photosynthetic bacterium (PSB), Rhodobacter sphaeroides S was immobilized on a porous ceramic plate (10 x 10 x 0.5 cm) 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 5 mg/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.

引用

页码：57 / 62

页数：6