论文部分内容阅读
以稻壳鸭粪混合物料为原料,利用小型厌氧装置开展了厌氧消化工艺的试验研究,并利用不同的产气速率模型以及累积产气模型对混合物料的厌氧消化过程进行了拟合。结果表明,稻壳鸭粪混合物料堆沤处理前后,其初始产气速率分别为2.31 L/(kg TS·d)与1.21 L/(kg TS·d),峰值产气速率分别为10.67 L/(kg TS·d)和5.65 L/(kg TS·d),产气潜力分别为113.5 L/kg TS(387.9 L/kg VS)和60.5 L/kg TS(336L/kg VS),堆沤处理后这3个参数均有所降低。线性模型、指数模型与高斯模型3个产气速率模型相比,指数模型对于混合物料产气速率的模型效果最佳,两段拟合曲线的R2值均达到了0.92以上;而累积产气模型中修正Gompertz函数的拟合效果优于Logistic模型和RC函数,拟合曲线的R2值高于0.99。
The experiment of anaerobic digestion process was carried out by using small anaerobic device with rice husk duck manure mixed material as raw material, and the anaerobic digestion process of the mixed material was fitted by using different gas production rate models and cumulative gas production models . The results showed that the initial gas production rates were 2.31 L / (kg TS · d) and 1.21 L / (kg TS · d), respectively, before and after the composting treatment. The peak gas production rates were 10.67 L / (TSS) and 5.65 L / (kg TS · d), respectively. The potential for gas production was 113.5 L / kg TS (387.9 L / kg VS) and 60.5 L / kg TS After these three parameters have been reduced. Compared with the three gas production rate models of the Gaussian model, the exponential model has the best effect on the gas production rate of the mixed material, and the R2 values of the two-stage fitting curve reach more than 0.92. The cumulative gas production model The fitting effect of the modified Gompertz function is better than the Logistic model and the RC function. The R2 value of the fitted curve is higher than 0.99.