不同浓度和温度下猪场粪水厌氧发酵产气特性及能效分析  

Biogas Production Characteristics of Anaerobic Fermentation of Swine Wastewater at Different Concentrations&Temperatures and Their Energy Efficiency

作　　者：裴占江[1,3] 刘娣 史风梅 王粟 李鹏飞 于秋月 高亚冰 刘杰 PEI Zhan-jiang;LIU Di;SHI Feng-mei;WANG Su;LI Peng-fei;YU Qiu-yue;GAO Ya-bing;LIU Jie(Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme,Harbin 150086,China;Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China;Rural Energy&Environmental Protection Institute of Heilongjiang Academy of Agricultural Sciences Key Laboratory of Combining Farming and Animal Husbandry,Ministry of Agriculture,P.R.China,and Key Laboratory of energy utilization of main crop straw resources,Harbin 150086,China)

机构地区：[1]黑龙江省农业科学院博士后科研工作站,哈尔滨150086 [2]黑龙江省农业科学院,哈尔滨150086 [3]黑龙江省农业科学院农村能源与环保研究所农业部种养循环重点实验室黑龙江省秸秆能源化重点实验室,哈尔滨150086

出　　处：《中国沼气》2021年第3期59-65,共7页China Biogas

基　　金：国家“十三五”重点研发计划课题(2016YFD0501403);哈尔滨市科技局青年后备人才项目(RC2017QN002097);黑龙江省农业科学院院科学基金(2018YYF037,2019KYJL013,2019CGJL009);黑龙江省农业科学院“农业科技创新跨越工程”专项项目(HNK2019CX15,HNK2019CX16,HNK2019CX17,HNK2019CX18);黑龙江生猪现代农业产业技术协同创新推广体系项目。

摘　　要：该研究以养殖场新鲜猪粪为原材料在不同温度(15℃,20℃,25℃,30℃和35℃)和不同TS浓度(3%,4%,5.5%,7%和8%)条件下进行产气特性研究及效能分析。结果表明15℃35℃平均池容产气率分别为0.121,0.605,0.615,0.906和1.065 L·L^(-1)d^(-1),甲烷含量分别为42.25%,49.78%,47.25%,52.56%及53.35%。在相同温度条件下,TS越高,COD的去除效率越低。在相同底物浓度条件下,随着温度的升高,COD降解率逐渐增加。在15℃35℃范围内并没有发生明显的酸化现象,pH值稳定在67.5之间。在15℃温度条件下,进料浓度在8%时,pH值最低,为5.8。在15℃35℃范围内,发酵浓度TS在7%时由拟合方程y=0.0083x^(3)-0.579x^(2)+13.23x-95.17(Adj.R^(2)>0.999),得到在20.6℃时产能/耗能的值最大,此时的池容产气率为0.615 L·L^(-1)d^(-1),E/Q为4.0937。In this paper,fresh pig manure from farms was used as raw material to study the biogas production characteristics under different temperatures(15℃,20℃,25℃,30℃and 35℃)and different TS concentrations(3%,4%,5.5%,7%and 8%),and the performances were analyzed.The results showed that the average volumetric gas production rates at 15℃~35℃were 0.121,0.605,0.615,0.906 and 1.065 L·L^(-1)d^(-1),and the methane content were 42.25%,49.78%,47.25%,52.56%and 53.35%,respectively.Under the same temperature condition,the higher the TS,the lower the COD removal efficiency.At the same substrate concentration,the COD degradation rate gradually increased with the temperature increasing.There was no obvious acidification in the range of 15℃~35℃,and the pH value was basically stable between 6~7.5.At a temperature of 15℃,when the feed concentration was 8%,the pH was the lowest,around 5.8.In the range of 15℃~35℃,according to the the fitting equation Y=0.0083 x^(3)-0.579 x^(2)+13.23 x-95.17(Adj.R^(2)>0.999),the maximum value of productivity/energy consumption(E/Q)was obtained at 20.6℃.At this time,the volumetric gas production rate was 0.615 L·L^(-1)d^(-1),and E/Q was 4.0937.

关 键 词：厌氧发酵 粪水 能效分析 

分 类 号：S216.4[农业科学—农业机械化工程] X713[农业科学—农业工程]