| 外循环气升式反应器中光合细菌处理味精废水的研究 |
| 摘要点击 868 全文点击 1191 修订日期：1993-08-04 |
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| 中文关键词 外循环气升式反应器 球形红假单胞菌 味精废水 生物负荷 氧转移总系数 单细胞蛋白 |
| 英文关键词 external air lift reactor Rhodopseudomonas sphaeroides monosodium glutamateprocessing wastewater BOD5 biological load oxygentransfer coefficient single cell protein |
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| 中文摘要 |
| 外循环气升式反应器(EALR)中球形红假单胞菌处理味精废水,能生产单细胞蛋白。在连续供气、KLa为242h-1,HRT为12h,活性炭载体浓度为10g/L,进水BOD5为2750mg/L条件下,废水BOD5的去除率达到92%.载体增加反应器内生物量28%,SCP产率系数Y=0.59kg(cell)/(kg BOD5·d),是无载体组的2倍。EALR的生物负荷为1.68kg BOD5/(kg MLSS·d),高于常规活性污犯法和四级槽光合细菌(PSB)法,分别为它们的5.25倍和1.58倍。菌体蛋白含量高达67.2%.结果表明,EALR处理效率高,便于操作管理,设施结构简单。在实现废水资源化处理,生产单细胞蛋白应用领域内,具有开发前景。 |
| 英文摘要 |
| The biotechnique of external air lift reactor (EALR) was used for the treatment of monosodium glutamate processing wastewater to produce a single cell protein (SCP ) with Rhodopseudomonas spieroides. The removal of BOD5 was 92% under the following conditions:BOD5, 2750mg/ L in the in fluent; KLa.,242h-1; HRT,12h;and the concentration of charcoal particle as a carrier, 10g/ L. The species of microorganism, R. sphaoha,has a protein content of up to 67.2 % and a coefficient of SCP yield of 0.59kg(cell)/(kg BOD5·d ).The process has a biological load of 1. 68kg BOD5/(kg MLSS·d),which is higher than that either in an activated sludge process or in a PSB 4-stage system. |
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