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餐厨废弃物复合酶解预处理-厌氧发酵中试工程研究
张驭舟,熊炜,陈祥松,李襄静,于安琪
0
(襄阳职业技术学院,襄阳 441050; 湖北绿鑫生态科技有限公司,襄阳 441413;中国科学院等离子体物理研究所,合肥 230031)
摘要:
为获得复合酶解预处理-厌氧发酵二步法工艺稳定性工程数据,在中温(35±2)℃条件下,采用自行设计的1 m3太阳能辅热连续搅拌式(CSTR)厌氧反应器,进行了180 d的连续式餐厨废弃物中试厌氧发酵效果研究,结果表明:餐厨废弃物复合酶解预处理-厌氧发酵二步法工艺具有良好的运行稳定性及较高的发酵效率,中试工程有机负荷可达约3.5 kgVS·m-3·d-1,单位总固体(TS)及挥发性固体(VS)产气率、产气平均甲烷(CH4)含量、容积产气率等指标可分别达到645.19 L·kg-1、685.06 L·kg-1、75.54%和2.37 m3·d-1,折合餐厨废弃物原料产气量158 m3·t-1
关键词:  餐厨废弃物  复合酶解  厌氧发酵  中试工程
DOI:10.13610/j.cnki.1672-352x.20191122.017
基金项目:湖北省中国科学院科技合作专项项目(20180107)资助。
Effects of multi-enzyme hydrolysis pretreatment-anaerobic digestion of food waste at pilot scale
ZHANG Yuzhou,XIONG Wei,CHEN Xiangsong,LI Xiangjing,YU Anqi
(Xiangyang Vocational and Technical College, Xiangyang 441050; Hubei Green Energy Eco-Tech Co. Ltd., Xiangyang 441413;Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)
Abstract:
In order to obtain the stability and engineering specifications of multi-enzyme hydrolysis - anaerobic digestion two steps process, a 180 days continuous fermentation study was conduct in a 1 m3 self-designed pilot scale CSTR anaerobic reactor at (35±2)℃. The results showed that the two steps process could run steadily at high efficiency, the organic loading rate could reach 3.5 kgVS·m-3·d-1, the biogas and methane yield rate of per total solid (TS) and volatile solid (VS) was 645.19 L·kg-1 and 685.06 L·kg-1, the average methane concentration was 75.54%, and the volume gas productivity reached up to 2.37 m3·(m3·d)-1, converted to 158 m3·t-1 of raw material biogas production.
Key words:  food waste  multi-enzyme hydrolysis  anaerobic digestion  pilot scale

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