摘要：

在酸性进水条件下，对大豆蛋白生产废水用UASB反应器进行了处理。在进水pH为4.5±0。2、COD为(16±0.5)g/L时，COD去除率达90%。随着废水中等电点高于7的蛋白质物质的发酵，厌氧系统的pH大幅度提高。即使在酸性进水条件下，UASB反应器依然能够稳定运行。在处理工艺中无需配置pH调节单元，因此降低了厌氧处理系统的建设和维护费用。

关键词: 厌氧处理, 工艺优化, 蛋白质, 氨基酸, 水解

Abstract:

The investigation of USAB(up-flow anaerobic sludge blanket)for treating soybean protein extraction wastewater shows that when the influent pH 4.5±0.2,COD(16±0.5)g/L,the COD removal rate reaches 90%.When the iso-electric point of the wastewater is higher than 7,as a result,the pH of the protein formentation increases to a large extent in the anaerobic system.Therefore the operation of UASB maintains its stability even when acidic influent pH is low.Since there is no pH regulating unit installed in the treatment process,the expense spending on the process construction and maintenance has been reduced.

Key words: anaerobic treatment, process optimization, protein, aminoacid, hydrolysis

中图分类号: 

• X703.3