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| | The purpose of high concentration alcohol fermentation was to achieve maximum alcohol within certain period by improving starch content in fermented liquor of unit volume and through the action of adequate quantity of yeast. The factors influencing high concentration alcohol fermentation included: glucose concentration, alcohol content, dissolved oxygen concentration, yeast cell density, fermentation temperature and scarcity of assistant nutritive substance etc. The approaches to improve high concentration ... | | 高浓酒精发酵是以提高单位体积内发酵醪液中淀粉含量,在适量的酿酒酵母菌作用下,在一定的时间内获得最大量的酒精。影响高浓酒精发酵的因素有:葡萄糖浓度、酒精含量、溶解氧浓度、酵母菌细胞密度、发酵温度和副营养物匮乏等。提高高浓酒精发酵的方法有:改良筛选优良酵母生产菌株、改进发酵系统、利用复合酶添加工艺和提高营养限制因子利用。(孙悟) | | 文摘来源 | | In view of the characteristics of alcohol sewage including high COD,high temperature,high SS and low pH,after DDG feedstuff extraction of proteins from alcohol sewage,medium-temperature MIC anaerobic reactor and carrousel oxidation ditch two-stage anaerobic techniques and two-stage aerobic techniques were applied to treat high-concentration alcohol sewage.The results suggested that COD removal rate could reach above 88 % under the conditions of anaerobic temperature of MIC reactor controlled at 35~39 ℃,pH v... | | 针对酒精废水的COD高、温度高、SS高、pH低特点,对酒精废水中的蛋白质提取DDG饲料后,采用中温MIC厌氧反应器和卡鲁塞尔氧化沟的两级厌氧和两级好氧工艺处理高浓酒精废水,结果表明,MIC反应器在厌氧温度控制在35~39℃,pH为4~5,有机负荷为15kgCOD/m3.d时,COD去除率达88%以上,MIC反应器运行稳定,出水可达到国家二级排放标准。 | | 文摘来源 | |   |
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