超滤膜处理高浓酵母废水特性的研究

Study on the Characteristics of High-concentration Yeast Wastewater Treated by Ultrafiltration Membrane

本文采用超滤膜分离法处理高浓酵母废水,考察探究了废水中有机物成分的变化及对废水水质特征的影响。研究结果表明,废水中有机物成分复杂,主要包括酚类、醇类、酮烃和脂类等,其中相对含量大于5.00%的有机物有3,4-二甲氧基苯酚、苯乙醇、3,4,5-三甲氧基苯酚、苯酚、2,5二甲氧基-1,4对苯二酚和邻苯二甲酸二戊酯,总和占到有机物含量的69.81%,同时含量最高的酚类化合物占58.44%。另外,超滤膜能够有效截留酵母废水中的大量有机物,如苯酚、苯乙醇,3,4二甲氧基苯酚和3,4,5三甲氧基苯酚等,回收品质良好的焦糖色素,提高酵母废水资源化利用率,使得超滤后废水中有机物种类和含量大大减少,废水的CODCr总量和色度大幅度降低,可生化性提高,各项水质指标得到优化,为高浓酵母废水的有效处理提供了新的技术路线。

In this paper, high-concentration yeast wastewater was treated by ultrafiltration membrane separation method, and the changes of organic compounds in wastewater and its effects on the water quality characteristics were investigated. The results showed that the organic compounds in the wastewater were complex, mainly including phenols, alcohols, ketones, liquids and so on. The main organic compounds with relative contents of more than 5.00% were 3,4-dimethoxyphenol, phenyl ethanol, 3,4,5-trimethoxyphenol, phenol, 2,5-dimethoxy-1,4-hydroquinone and diamyl phthalate accounting for 69.81% of total organic matter content, while the highest content of phenolic compounds accounted for 58.44%. In addition, ultrafiltration membrane could effectively remove a lot of organic compounds in yeast wastewater from yeast wastewater, such as phenol, phenyl alcohol, 3,4-dimethoxyphenol and 3,4,5-trimethoxyphenol. And some caramel pigments can be recycled. Hence, by using membrane ultrafiltration, theutilization and biodegradability of yeast wastewater can be significantly improved. This research provided a new way for the efficient treatment of high-concentration yeast wastewater.