摘要
在中温(35±1)℃下,采用批量式厌氧消化工艺,在玫瑰秸秆厌氧消化系统中添加由蓝藻藻泥、红薯茎和咖啡渣制成的水热炭,研究水热炭对厌氧消化体系性能的影响.结果表明:实验共进行44天,该发酵体系遵循厌氧消化规律,在体系中添加由蓝藻藻泥(实验组1)、红薯茎(实验组2)、咖啡渣(实验组3)制成的水热炭的实验组和不添加水热炭的对照组,累积产气量分别为3251、3995、4555、4002 mL,甲烷含量在产气高峰期均达到45％以上.实验组1、2、3和对照组的原料产气率为72、88、101 mL/g和88mL/g,总固体产气率分别为173、212、242 mL/g和213 mL/g.原料产气率和总固体产气率:实验组3＞对照组＞实验组2＞实验组1.实验3原料产气率是对照组的1.15倍,总固体产气率是对照组的1.14倍,累积日产气量和累积甲烷产量比对照组提升 13.83％和 14.43％.
Abstract
At the moderate temperature of(35±1)℃,the batch anaerobic digestion process was adopted,and hydrothermal charcoal made of cyanobacteria mud,sweet potato stems and coffee grounds was added to the anaerobic digestion system of rose stalks to study the influence of hy-drothermal charcoal on the performance of anaerobic digestion system.The results showed that the experiment lasted for 44 days,and the fer-mentation system followed the law of anaerobic digestion.The experimental group and the control group,which were added with hydrothermal charcoal made of cyanobacteria mud(experimental group 1),sweet potato stems(experimental group 2)and coffee grounds(experimental group 3),had accumulated gas production of 3251 mL,3995 mL,4555 mL and 4002 mL respectively,and the methane content was at the peak of gas production.The gas production rates of raw materials in experimental groups 1,2,3 and control group were 72 mL/g,88 mL/g,101 mL/g and 88 mL/g,and the gas production rates of TS were 173 mL/g,212 mL/g,242 mL/g and 213 mL/g,respectively.Gas production rate of raw materials and gas production rate of TS;experimental group 3＞control group＞experimental group 2＞experimental group 1.In experiment 3,the gas production rate of raw materials is 1.15 times that of the control group,the gas production rate of TS is 1.14 times that of the control group,and the cumulative daily gas production and methane production are increased by 13.83％and 14％compared with the control group.
维普
万方数据