摘要
蔬菜花卉类废物的两相厌氧消化过程中,为加速固相有机物的水解,通过调节循环消化液中水解液与甲烷化出水的流量比(分别为0:1,1:3,1:1,3:1)改变循环消化液的组成,比较了不同流量比下循环消化液组成对固体废物厌氧水解过程的影响.结果表明,流量比为1:3时,水解效率最高.工艺运行9d后,TOC和TN的溶出量分别为162.45和15.21mg/g,TS、VS、C、纤维素和木质素的减量率分别达到60.66%、62.88%、58.35%、49.12%和43.43%;流量比会影响厌氧酸化代谢类型,低比例促进丙酸和乳酸生成,高比例促进丁酸生成.
In the two-phase anaerobic digestion process of vegetable and flower-type wastes, the anaerobic hydrolysis process was controlled through recycling digested liquid. The recycled digested liquid composition was changed through the flow ratio of hydrolytic liquid in the recycled digested liquid to the methanogenic effluent liquid. The influence of recycled digested liquid composition on solid waste anaerobic hydrolysis process was compared under different flow ratios （being 0：1, 1：3, 1：1, 3：1, respectively）. When flow ratio was 1：3, the hydrolytic efficiency was the highest. After 9 d of hydrolysis, the dissolved amount of TOC and TN was 162.45 mg/g and 15.21 mg/g, respectively. The removal efficiencies of TS, VS, C, cellulose and lignin reached 60.66%, 62.88%, 58.35%, 49.12% and 43.43%, respectively. The flow ratio could influence the anaerobic acidogenesis. Low flow ratio promoted the generations of propionic acid and lactic acid, high flow ratio promoted the generation of butyric acid.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2008年第5期412-416,共5页
China Environmental Science
基金
国家科技支撑计划课题(2006BAC02A03)
教育部科学技术研究重点项目(107122)
上海-法国罗纳阿尔卑斯大区科研合作基金项目(06SR07105)
关键词
蔬菜花卉类废物
厌氧消化
水解液
甲烷化出水
循环消化液组成
vegetable and flower wastes
two-phase anaerobic digestion
hydrolytic liquid
methanogenic effluent
recycled digested liquid composition.
