餐厨垃圾沼气工程稳定运行影响因素分析
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摘要
稳定、高效、安全的运行模式是对餐厨垃圾沼气工程的基本要求。针对某全混厌氧实体工程在运行过程中遇到的高挥发性有机酸的问题,本研究通过分析小试批次发酵试验及工程实践数据,总结出有机负荷率、搅拌强度、功能微生物浓度,尤其产甲烷菌群,以及微量元素为餐厨垃圾沼气工程运行的主要影响因素,共同决定餐厨垃圾沼气工程持续稳定运行。
Stable,efficient and safe are the basic requirements for kitchen waste biogas project.This study analyzed the experimental data both through batch fermentation test in lab and continuous operation in a continuously stirred tank reactor( CSTR) system fed with kitchen waste,aiming to solve the high volatile organic acid problem occurred in the CSTR. The results demonstrated that the organic loading rate,stirring intensity,concentration of functional microorganism,especially methanogens,and trace elements were probably the main factors that codetermined the steady state of kitchen waste biogas project.
Stable,efficient and safe are the basic requirements for kitchen waste biogas project.This study analyzed the experimental data both through batch fermentation test in lab and continuous operation in a continuously stirred tank reactor( CSTR) system fed with kitchen waste,aiming to solve the high volatile organic acid problem occurred in the CSTR. The results demonstrated that the organic loading rate,stirring intensity,concentration of functional microorganism,especially methanogens,and trace elements were probably the main factors that codetermined the steady state of kitchen waste biogas project.
引文
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[15]刘家燕,赵爽,姜伟立,等.餐厨垃圾厌氧消化处理技术工程应用[J].环境科技,2016,29(5):43-46.
[16]童胜宝,王智,廖晓聪,等.全混厌氧罐新型搅拌方式的数值模拟研究[C]//《环境工程》2018年全国学术年会论文集.北京:《工业建筑》杂志社,2018.
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[19]张万钦,吴树彪,郎乾乾,等.微量元素对沼气厌氧发酵的影响[J].农业工程学报,2013,29(10):1-11.
[20]AUBREY L,ZERKLE C H H,SUSAN L B.Biogeochemical signatures through time as inferred from whole microbial cenomes[J].American Journal of Science,2005,205(6-8):467-502.
[21]蔡亚凡,崔宗均,王小芬.厌氧发酵系统中的微量元素及其生物利用度的研究综述[J].中国农业大学学报,2017,22(9):01-11.
[2]毕少杰,洪秀杰,韩晓亮,等.餐厨垃圾处理现状及资源化利用进展[J].中国沼气,2016,34(2):58-61.
[3]魏小凤,孙伟伟,王冠平,等.我国餐厨垃圾处理市场现状分析[J].环境卫生工程,2016,24(2):28-30.
[4]郭燕锋,孔晓英,刘婉玉,等.有机负荷对厨余垃圾常温厌氧发酵产甲烷的影响[J].农业工程学报,2011,27:96-100.
[5]李定龙,戴肖云,赵宋敏,等.p H对厨余垃圾厌氧发酵产酸的影响[J].环境科学与技术,2011,34(4):125-128.
[6]马磊,刘肃.城市餐厨垃圾的厌氧消化处理研究[J].环境卫生工程,2012,20(4):12-14.
[7]申嫄.餐厨垃圾单相厌氧反应器高负荷运行试验研究[D].重庆:重庆大学,2012.
[8]XU Z Y,ZHAO M X,MIAO H F,et al.In situ volatile fatty acids influence biogas generation from kitchen wastes by anaerobic digestion[J].Bioresource Technology,2014,163(163):186-192.
[9]CHEN X,YAN W,SHENG K C,et al.Comparison of highsolids to liquid anaerobic co-digestion of food waste and green waste[J].Bioresource Technology,2014,154:215-221.
[10]BROWNE J D,MURPHY J D.The impact of increasing organic loading in two phase digestion of food waste[J].Renewable Energy,2014,71:69-76.
[11]ZHAO Y,WU J W,YUAN X F,et al.The effect of mixing intensity on the performance and microbial dynamics of a single vertical reactor integrating acidogenic and methanogenic phases in lignocellulosic biomass digestion[J].Bioresource Technology,2017,238:524-551.
[12]LI J J,ZICARIB S M,CUI Z J,et al.Processing anaerobic sludge for extended storage as anaerobic digester inoculum[J].Bioresource Technology,2014,166:201-210.
[13]赵野.难、易降解高含固率物料两相分区一体工艺下的高效产甲烷机制[D].北京:中国农业大学,2017.
[14]马旭光.纤维质物料高含固率厌氧发酵新工艺及高效产甲烷机制[D].北京:中国农业大学,2014.
[15]刘家燕,赵爽,姜伟立,等.餐厨垃圾厌氧消化处理技术工程应用[J].环境科技,2016,29(5):43-46.
[16]童胜宝,王智,廖晓聪,等.全混厌氧罐新型搅拌方式的数值模拟研究[C]//《环境工程》2018年全国学术年会论文集.北京:《工业建筑》杂志社,2018.
[17]DEMIREL B,SCHERER P.The roles of acetotrophic and hydrogenotrophic methanogens during anaerobic conversion of biomass to methane:a review[J].Reviews in Environmental Science and Bio/Technology,2008,7(2):173-190.
[18]野池达也.甲烷发酵(刘兵,薛咏海,译)[M].北京:化学工业出版社,2014.
[19]张万钦,吴树彪,郎乾乾,等.微量元素对沼气厌氧发酵的影响[J].农业工程学报,2013,29(10):1-11.
[20]AUBREY L,ZERKLE C H H,SUSAN L B.Biogeochemical signatures through time as inferred from whole microbial cenomes[J].American Journal of Science,2005,205(6-8):467-502.
[21]蔡亚凡,崔宗均,王小芬.厌氧发酵系统中的微量元素及其生物利用度的研究综述[J].中国农业大学学报,2017,22(9):01-11.