| 酵母菌对味精生产中离交尾液的处理初探 |
| 摘要点击 1635 全文点击 1923 投稿时间：2001-02-21 |
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| 中文关键词 酵母菌 味精 离交尾液 废水处理 鉴定 |
| 英文关键词 yeast screening & identification monosodium glutamate ion exchange wastewater wastewater treatment |
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| 中文摘要 |
| 通过富集培养并利用选择性培养基分离筛选到2种能适应味精生产过程中离交尾液(COD为40690mg/L,NH4+-N含量为16914mg/L)的酵母菌,经鉴定分属于嗜盐假丝酵母(Candida halophila)和粘红酵母(Rhodotorula glutinis).这二种菌混合培养时在pH4～9范围内其COD去除率均可达到80%以上;对于10倍、3倍、2倍稀释的离交尾液,48h之内,其COD去除率均可高达84.5%,日平均去除速度COD/SS均在1.0kg/(kg@d)以上,远高于对照的活性污泥法[对于10倍稀释液最高去除率为78.9%,去除速度为0.34kg/(kg·d)],同时也高于国内报道的其他酵母菌菌株.经处理后,还原糖可去除95.7%,而NH+4-N没有明显变化.
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| 英文摘要 |
| Two strains of yeasts, Candida halophila and Rhodotorula glutinis , were acquired through screening from ion-exchange monosodium glutamate wastewater(IEMGW) which was characterized by its high contents of COD (40690mg/L), NH4+-N (16914mg/L) and SO42- (18000mg/L). The mixture of the two species had a good COD removal performance for treating IEMGW in a pH rang of 4～9. The yeast technology was superior to the conventional activated sludge in terms of COD removal and COD decomposition rate. In a dilution rate range of wastewater from 1∶1 to 1∶9, a COD removal of 84 5% and an average COD decomposition rate of over 1.0 kg/(kg·d ) were obtained under an initial pH of 4. |
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