高温／中温两相厌氧消化反应中有机酸的变化  

Organic Acid Changes in Two-phase Thermophilic/Mesophilic Anaerobic Digestion Process

作　　者：赵庆良[1] 王宝贞[1] 

机构地区：[1]哈尔滨建筑大学

出　　处：《环境科学》1996年第3期44-47,共4页Environmental Science

摘　　要：为了深入考察高温／中温两相厌氧消化反应器系统用以处理混合基质（分别同时处理污泥与其他高浓度有机废物）时有机酸的变化特性，采用蒸馏－滴定法测定挥发有机酸总量，并在系统达到相对稳定时用色质联机确定有机酸的组成及各自含量．研究结果表明，混合基质经高温消化后挥发有机酸含量有所增加，平均在３３４６—５５２９ｍｇ／Ｌ，进一步经中温消化且系统达到稳定后其含量平均为４３—４３３ｍｇ／Ｌ；乙酸、丙酸。In order to investigate the changes of organic acids in the two-phase thermophilic / mesophilicanaerobic digestion which was designed for the treatment of mixed substrates from sewage sludge and other high-concentration organic waste,distillation-titration method was adopted for the analyses of volatile organic acids,and GC-MS fortheir composition and concentration.The experimental results showed that the concentration of volatile organic acids increased after the thermophilic digestion of the mixed substrates and d ecreased greatly after their futher digestion in the second mesophilic digester,which were averagely 3346- 5529 mg/L and 43 - 433 mg/L, respectively.Acetic acid,propionic acid, butyric acid and valeric acid are the main acids in the mixed substrates and in the effluent of thermophilic digester.

关 键 词：厌氧消化 有机酸 食品工业 废水处理 

分 类 号：X792.03[环境科学与工程—环境工程]