物料浓度(TS)对猪粪厌氧消化的影响  

Influence of Material Concentration( TS) On Anaerobic Digestion of Swine Manure

作　　者：彭景权 杨梅 李裕荣[2] 刘永霞 

机构地区：[1]贵州省环境科学研究设计院,贵阳550081 [2]贵州省农业科技信息研究所,贵阳550006

出　　处：《环保科技》2015年第5期29-33,共5页Environmental Protection and Technology

基　　金：贵州省社会发展攻关项目"畜禽养殖废弃物综合利用研究及应用"(黔科合SZ字(2009)3005);贵州省农业科学院专项"沼肥在有机农业中的应用研究与示范"[黔农科院专项(2009)025];贵州省科技厅创新能力建设项目"农作物系统模拟研究"[黔科合农G字(2009)4010];贵州省科技厅农业攻关项目"用于水肥一体化的液体肥研制与示范研究"黔科合NY[2013]3076号

摘　　要：在实验室室温条件下,采用20 L自制厌氧发酵装置,设置物料浓度(TS)分别为1%、2%、3%、4%和6%的猪粪水进行厌氧消化试验,观测其对猪粪厌氧消化的影响。结果表明:猪粪发酵液的TS与初始COD、TN、TP和NH3-N的初始浓度成正比,至试验结束,猪粪COD和TN含量低于初始浓度,NH3-N和TP含量高于初始浓度。在试验范围内猪粪的总产气量随TS升高而增加;但总产气率与TS并不成正比。从产气开始时间、稳定度以及产气率综合考虑,TS 6%的猪粪发酵较好;从资源化利用来看,TS低于3%不利于持续性产气,且启动时间较长。此外,温度对猪粪厌氧发酵产气有较大影响,环境温度变幅超过±5℃时,整个厌氧消化过程停止产气。Lab - scale experiment was conducted by using anaerobic fermentation devices for 20 liters under room temperature to investigate the influence of swine manure material concentrations （TS） with 1%, 2%, 3%, 2%, and 6% on anaerobic digestion. The results show that TS and initial COD, TN, TP and NH3 - N in fermented liquid of swine manure are proportional to initial concentration. Until end of test, COD and TN contents are lower than initial concentration while NH3 - N and TP contents are higher than that of initial. Total biogas production increases with the increase of TS, but total biogas production rate is disproportionate to TS. Comprehensively taking factors such as bio- gas starting time, stability, and biogas production rate into consideration, TS of 6% ferments com- pletely. While from the view of resource utilization, TS less than 3% cam produce biogas continuously and take longer to start. In addition, temperature has great influence on anaerobic fermentation for biogas production. The anaerobic digestion process will be terminated if temperature variation amplitude exceeds ＋ / - 5 ℃.

关 键 词：猪粪 厌氧消化 物料浓度TS 产气量 

分 类 号：X172[环境科学与工程—环境科学]