| 柠檬酸中和废水回用技术研究 |
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| 引用本文： | 张洪勋,程芳,齐鸿雁.柠檬酸中和废水回用技术研究[J].环境工程学报,1999(2). |
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| 作者姓名： | 张洪勋 程芳 齐鸿雁 |
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| 作者单位： | 中国科学院生态环境研究中心 |
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| 摘 要： | 本文研究了柠檬酸中和废水回用工艺技术。中和废水经碱（ＮａＯＨ）沉淀和酸（Ｈ２ＳＯ４）中和预处理措施，直接用于发酵配料。实验用菌株Ｃ－９８自黑曲霉ＣＢＸ－１２分离获得。最佳发酵条件：总还原糖１４％～１６％，麦麸２．５％，初始ｐＨ６．５，乙醇１．５％。同传统的柠檬酸废水处理工艺比较，该工艺在投资和运转成本方面具有潜在的优势。
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| 关 键 词： | 柠檬酸 中和废水 黑曲霉 |
STUDIES ON RECYCLING NEUTRALIZED WASTEWATER FROM CITRIC ACID PRODUCTION |
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| Zhang HongxunCheng FangQi Hongyan.STUDIES ON RECYCLING NEUTRALIZED WASTEWATER FROM CITRIC ACID PRODUCTION[J].Techniques and Equipment for Environmental Pollution Control,1999(2). |
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| Authors: | Zhang HongxunCheng FangQi Hongyan |
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| Abstract: | The recycling process of the neutralized wastewater from citric acid production was studied. The pretreatment of the wastewater prepitated with NaOH and neutralized with H2SO4 could be used for the citric acid production with a strain C98 isolated from its mother Aspergillus niger CBX12. Optimum fermentation was carried out in 14%16% reducing sugar, wheat bran 2.5%, initial pH 6.5 and 1.5% alcohol. This process showed potential advantages in the investment and running costs of the wastewater treatment compared to the traditional treatment process of wastewater from the citric acid production. |
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| Keywords: | citric acid neutralized wastewater Aspergillus niger |
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