不同纳米铁材料对猪粪厌氧消化产气特性的影响  

Effects of Different Nano-iron Materials on Gas Production by Anaerobic Digestion of Pig Manure

作　　者：陈瑞应 付天岭[1,2,3] 岑如香 王虎 Chen Ruiying;Fu Tianling;Cen Ruxiang;Wang Hu(College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China;Institute of New Rural Development,Guizhou University,Guiyang 550025,China;Engineering Laboratory for Pollution Control and Resource Reuse Technology of Livestock and Poultry Breeding in Plateau Mountain,Guizhou Province,Guiyang 550025,China)

机构地区：[1]贵州大学资源与环境工程学院,贵阳550025 [2]贵州大学新农村发展研究院,贵阳550025 [3]贵州省山地畜禽养殖污染控制与资源化技术工程实验室,贵阳550025

出　　处：《科技通报》2022年第2期91-97,120,共8页Bulletin of Science and Technology

基　　金：贵州省科技支撑计划项目(黔科合支撑[2018]2278号);贵州省科技厅科研机构服务企业行动计划项目(黔科合服企[2018]4007(006));贵州省科技厅基础条件平台建设项目:(黔科合平台人才[2019]5701号)。

摘　　要：为了探明不同纳米铁材料添加对猪粪中温厌氧消化产气的影响,提升猪粪厌氧消化产气效率、减少厌氧消化过程中H_(2)S释放。以纳米ZVI、纳米Fe_(2)O_(3)、纳米Fe_(3)O_(4)为研究对象,采用批次试验,探讨了纳米铁材料添加对猪粪中温(35±1)℃厌氧消化CH_(4)及H_(2)S产量的影响。结果表明:3种纳米铁材料的加入都能缓解消化体系中的有机酸积累、减少氨氮产生,并提高猪粪消化系统甲烷产量,与对照组相比,纳米铁材料产甲烷总量提升了5.02%~10.93%,其影响从大到小依次为纳米Fe_(3)O_(4)>纳米Fe_(2)O_(3)>纳米ZVI;不同纳米铁材料间对猪粪厌氧消化产H_(2)S过程的影响存在差异,与对照组相比,纳米ZVI、纳米Fe_(2)O_(3)对猪粪厌氧消化产H_(2)S过程起抑制作用,累积H_(2)S产量分别降低了52.48%和29.68%,然而添加纳米Fe_(3)O_(4)促进了H_(2)S生成,累积H_(2)S产量增加了45.80%。In order to explore the effect of different nano-iron materials on gas production by medium-temperature anaerobic digestion of pig manure,improve the gas production efficiency of anaerobic digestion of pig manure and reduce the release of H_(2)S during anaerobic digestion.Taking nano-ZVI,nano-Fe_(2)O_(3) and nano-Fe_(3)O_(4) as research objects,the effects of adding nano-iron materials on the yield of CH_(4)and H_(2)S in anaerobic fermentation of pig manure at(35±1)℃were studied by batch fermentation experiment.The results showed that the addition of three kinds of nano-iron materials could alleviate the accumulation of organic acids in the digestive system,reduce the production of ammonia nitrogen,and increase the methane production in pig manure fermentation system.Compared with the control group,the total methane production of nano-iron materials increased by 5.02%~10.93%,and its effect was in the following order:nano-Fe_(3)O_(4)>nano-Fe_(2)O_(3)>nano-ZVI.There were differences in the effects of different nano-iron materials on the process of H_(2)S production by anaerobic digestion of pig manure.Compared with the control group,nano-ZVI and nano-Fe_(2)O_(3) inhibited the process of H_(2)S production by anaerobic digestion of pig manure,and the cumulative H_(2)S production decreased by 52.48%and 29.68%,respectively.However,the addition of nano-Fe_(3)O_(4) promoted the production of H_(2)S,and the cumulative H_(2)S production increased by 45.80%.

关 键 词：纳米铁材料 猪粪 厌氧消化 甲烷 硫化氢 

分 类 号：X713[环境科学与工程—环境工程]