酒糟与秸秆混合厌氧消化产沼气特性研究  

Study on Biogas Production Characteristics of Mixed Anaerobic Digestion of Distilled Grains and Straw

作　　者：王婷婷 汤云川[2] 贺莉 朱顺熙 樊战辉[2] 杨琴 WANG Tingting;TANG Yunchuan;HE Li;ZHU Shunxi;FAN Zhanhui;YANG Qin(Yibin Ecological Environment Bureau,Yibin 644000,China;Chengdu Academy of Agriculture and Forestry Sciences,Chengdu 611130,China;Biogas Institute of Ministry of Agriculture and Rural Affairs,Chengdu 610041,China)

机构地区：[1]宜宾市生态环境局,四川宜宾644000 [2]成都市农林科学院,四川成都611130 [3]农业农村部成都沼气科学研究所,四川成都610041

出　　处：《中国沼气》2023年第2期23-28,共6页China Biogas

基　　金：四川省农业减碳与秸秆资源化利用重大技术协同推广项目(JGXT-2022-06,JGXT-2022-07)。

摘　　要：为初步探究高粱酒糟与秸秆混合厌氧消化产气特性,以川糯、泸州红品种的高粱酒糟与秸秆的不同比例混合物为发酵原料,研究厌氧共消化过程中产气量的变化,并利用BP神经网络分析各组分在所构建模型模拟输入参数和输出产气的关系。结果表明,添加秸秆有利于酒糟秸秆共消化体系保持产气量的相对稳定,减少发酵周期,酒糟∶秸秆比例为1∶3时,川糯、泸州红品种的发酵周期分别缩短到21 d、24 d;川糯、泸州红酒糟单独厌氧消化时累计产气分别达到336.96、290.17 mL·g^(-1)TS,与酒糟秸秆共消化相比更佳;BP神经网络模型平均误差控制在10.99%,表明拟合良好,根据模拟组分的贡献,发现共消化过程中,酒糟对累积产甲烷量有更多的贡献。In order to preliminarily explore the gas production characteristics of mixed anaerobic digestion of sorghum distiller's grains and straw,the mixture of sorghum distiller's grains and straw in different proportions of Chuannuo and Luzhouhong varieties was used as fermentation raw material to study the change of gas production during anaerobic co-digestion.The BP neural network were used to study the gas production,and relationship between input parameters and output gas production of each component in the constructed model were analyzed.The results showed that adding straw was beneficial to the co-digestion system of distiller's grains and straw to maintain the relative stability of gas production and reduce the fermentation period.When the ratio of distiller's grains:straw was 1∶3,the fermentation period of Chuannuo and Luzhouhong varieties was shortened to 21 d and 24 d,respectively.The cumulative gas production rates of Chuannuo and Luzhou red wine grains were respectively 336.96 and 290.17 mL·g^(-1) TS when anaerobic digestion was performed alone,which was better than that of the co-digestion of distillers grains and straw.The average error of the BP neural network model was controlled at 10.99%,indicating a good fit,according to the contribution of the simulated components.It was found that the distiller's grains contributed more to the cumulative methane production during the co-digestion process.

关 键 词：高粱 酒糟 秸秆 厌氧发酵 

分 类 号：S216.4[农业科学—农业机械化工程] X705[农业科学—农业工程] X712[环境科学与工程—环境工程]