渗滤工艺中蔬菜废弃物厌氧产酸过程研究  

The study of acidogenesis of vegetable wastes in leaching bed reactor

作　　者：孟光范[1] 李岩[1] 张晓东[1] 华栋梁[1] 牧辉[1] 许海朋[1] 金付强[1] 

机构地区：[1]山东省科学院能源研究所,山东省生物质气化技术重点实验室,山东济南250014

出　　处：《可再生能源》2016年第9期1398-1402,共5页Renewable Energy Resources

基　　金：国家科技支撑计划(2014BAD02B04,2015BAD21B03);山东省科技发展计划(2014GSF117005);山东省自然科学基金(ZR2014EEQ023)

摘　　要：文章研究了甘蓝、土豆和西红柿藤蔓在渗滤床中的有机酸分布规律和产酸状况,并对产酸过程中的重要指标参数进行了监测。结果表明:甘蓝、土豆和西红柿藤蔓三者的产酸停留时间分别为4,5,8 d,酸化后主要有机酸的产量和分布有较大区别;土豆和甘蓝总产酸量远高于西红柿藤蔓,西红柿藤蔓由于纤维素含量较高,产酸率明显较低;有机酸主要以乙酸和丁酸为主。土豆和甘蓝最终所得渗滤液的COD浓度可达到10 150 mg/L,表明产酸过程较好地将蔬菜废弃物中的有机物水解酸化成了有机酸及其他组分。Using leaching bed as reactor, the distribution and output of volatile fatty acids derived from the acidogenesis of cabbage, potato and tomato vine were investigated in this study, meanwhile the process parameters were monitored. Results indicated that the retention times of cabbage, potato and tomato vine varied for 4, 5 d and 8 d respecuvely. The volatile fatty acids （VFAs） distribution and dominant organic acids showed great difference during the acidification. The VFAS outputs were much higher for cabbage and potato than that of tomato vine, which could be explained that the cellulose content in tomato vine was high and it was difficult to be degraded.The dominant VFAs were acetic acid and butyric acid for these feedstocks.The chemical oxygen demand （COD） concentrations of 10 150 mg/L were observed in the acidogenic reactor of cabbage and potato, which showed excellent performance of conversion of vegetable wastes to organic acids.

关 键 词：蔬菜废弃物 酸化 沼气 渗滤床 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.2[农业科学—农业机械化工程]