碱度类型及浓度对剩余污泥中温厌氧消化的影响
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摘要
为了探究不同碱度物质(Na_2CO_3、KHCO_3、NaHCO_3)和浓度范围(2000,3000,4000mg/L)(以CaCO_3计)对中温厌氧消化系统的影响,采用了密封的半连续搅拌反应器进行批次试验.综合反应器运行与微生物高通量测序分析,结果表明在3种不同碱度类型中Na_2CO_3能推进水解酸化过程,而在产气减量方面Na HCO_3表现更为突出,说明在调节系统碱度时,Na_2CO_3更易促进水解酸化这一限速阶段,而Na HCO_3能使水解酸化细菌与产甲烷菌之间保持平衡,保证甲烷产量;在不同Na HCO_3浓度情况下,增加投加碱度的浓度使水解能力增强,相应会导致脱水性能恶化,而系统中挥发性脂肪酸含量变化不大,过量碱度将使得系统产气和减量能力下降.
To explore the effects of different alkalinity substances(Na_2 CO_3, KHCO_3, NaHCO_3) and concentration ranges(2000, 3000,4000 mg/L(as CaCO_3)) on the middle-temperature anaerobic digestion system, a static batch semi-continuous stirred tank was used in the experiment. The comprehensive reactor operation and microbial high-throughput sequencing analysis showed that Na_2CO_3 could promote the hydrolysis and acidification process in three different types of alkalinity, while NaHCO_3 was more prominent in gas production and reduction. It indicated that Na_2CO_3 was more likely to promote hydrolysis and acidification in the limiting stage compared to other samples, when the alkalinity of the system was adjusted. Under different concentrations, the hydrolysis capacity was enhanced by increasing the concentration of added basicity, which led to the deterioration of the dehydration performance, while the Volatile Fatty Acids changed little, and the excess basicity will reduce the gas production and reduction of the system.
To explore the effects of different alkalinity substances(Na_2 CO_3, KHCO_3, NaHCO_3) and concentration ranges(2000, 3000,4000 mg/L(as CaCO_3)) on the middle-temperature anaerobic digestion system, a static batch semi-continuous stirred tank was used in the experiment. The comprehensive reactor operation and microbial high-throughput sequencing analysis showed that Na_2CO_3 could promote the hydrolysis and acidification process in three different types of alkalinity, while NaHCO_3 was more prominent in gas production and reduction. It indicated that Na_2CO_3 was more likely to promote hydrolysis and acidification in the limiting stage compared to other samples, when the alkalinity of the system was adjusted. Under different concentrations, the hydrolysis capacity was enhanced by increasing the concentration of added basicity, which led to the deterioration of the dehydration performance, while the Volatile Fatty Acids changed little, and the excess basicity will reduce the gas production and reduction of the system.
引文
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[16]卓杨.高含固污泥水热预处理及厌氧消化组分转化研究[D].西安:西安建筑科技大学,2015.Zhuo Y. Research on hydrothermal pretreatment and anaerobic digestion components transformation of high solids sludge[D]. Xi'an:xi'an university of architecture and technology, 2015.
[17]朱建平,彭永臻,李晓玲,等.碱性发酵污泥脱水性能的变化及其原因分析[J].化工学报,2013,64(11):4210-4215.Zhu J P, Peng Y Z, Li X L, et al. Changes of dehydration performance of alkaline fermentation sludge and analysis of its causes[J]. Journalof chemical industry, 2013,64(11):4210-4215.
[18] Du R, Cao S, Li B, et al. Simultaneous Domestic Wastewater and Nitrate Sewage Treatment by Denitrifying Ammonium Oxidation(Deamox)in Sequencing Batch Reactor[J]. Chemosphere,2017,(174):399-407.
[19] Chen Y,Li M,Meng F,et al. Optimal Poly(3-Hydroxybutyrate/3-Hydroxy valerate)Biosynthesis by Fermentation Liquid From Primary and Waste Activated Sludge[J]. Environmental Technology, 2014,35(14):1791-1801.
[20] Liang B, Wang L Y,Serge M M, et al. Anaerolineaceae and Methanosaeta turned to be the dominant microorganisms in alkanesdependent methanogenic culture after long-term of incubation[J].AMB Express, 2015,5(1):117.
[21] Yamada T,Sekiguchi Y, Imachi H, et al. diversity,localization,and physiological properties of filamentous microbes belonging to chloroflexi subphylum I in mesophilic and thermophilic methanogenic sludge gran ules[J]. Applied and Environmental Microbiology, 2005,(71):7493-7503.
[22]刘晋仙,李毳,景炬辉,等.中条山十八河铜尾矿库微生物群落组成与环境适应性[J].环境科学,2017,38(1):318-326.Liu J X, Li J J, Jing J h, et al. Microbial community composition and environmental adaptability of copper tailings ponds in shibahe river,zhongtiao mountain[J]. Environmental science, 2017,38(1):318-326.
[23]赵光.两段式厌氧工艺产甲烷发酵特性及微生物生态调控机制研究[D].哈尔滨:哈尔滨工业大学,2013.Zhao G. Study on the characteristics of two-stage anaerobic methaneproducing fermentation and microbial ecological regulationmechanism[D]. Harbin:Harbin Institute of Technology, 2013.
[24]孙睿.Mec用于剩余污泥产氢产甲烷效能及微生物群落结构解析[D].哈尔滨:哈尔滨工业大学,2015.Sun R. Analysis on the efficiency and microbial community structure of Mec in the production of hydrogen and methane from surplus sludge[D]. Harbin:Harbin Institute of Technology, 2015.
[25]麻婷婷,承磊,刘来雁,等.不同抑制剂对乙酸降解产甲烷及产甲烷菌群结构的影响[J].微生物学报,2015,55(5):587-597.Ma T T, Cheng L, Liu L Y, et al. Effects of different inhibitors on acetic acid degradation and methanogenic flora structure[J]. Acta microbiologica sinica, 2015,55(5):587-597.
[26]吕育财,李宁,郭金玲,等.一组中温厌氧消化菌群高温启动过程中的菌群多样性变化研究[J].环境科学学报,2016,36(6):1986-1997.Lu Y C, Li N, Guo J 1, et al. Study on the change of micro flora diversity during the high temperature initiation of a group of anaerobic digestion microflora at medium temperature[J]. Journal of environmental science, 2016,36(6):1986-1997.
[27]李凯平.长链烷烃厌氧降解产甲烷体系的菌群组成及变化[D].上海:华东理工大学,2012.Li K P. Composition and changes of the microflora of methane production system by anaerobic degradation of long-chain alkanes[D].Shanghai:east China university of science and technology, 2012.
[2] Abe N, Tang Y, Iwamura M, et al. Pretreatment followed by anaerobic digestion of secondary sludge for reduction of sewage sludge volume[J]. Water Science and Technology, 2013,67(11):2527-2533.
[3] Donosobravo A, Perezelvira S, Aymerich E, et al. Assessment of the influence of thermal pre-treatment time on the macromolecular composition and anaerobic biodegradability of sewage sludge[J].Bioresource Technology, 2011,102(2):660-666.
[4]蒋玲燕.污水处理厂污泥厌氧消化优化设计与运行探讨[J].给水排水,2015,51(2):32-35.Jiang L Y. Optimal design and operation of sludge anaerobic digestion in sewage treatment plant[J]. Water supply and drainage, 2015,51(2):32-35.
[5]刘存芳.城市有机垃圾厌氧消化pH控制动力学研究[D].长沙:湖南大学,2006.Liu C F. Study on pH control kinetics in anaerobic digestion of municipal organic waste[D]. Changsha:hunan university, 2006.
[6]郑福生,郑淑文.碱度对厌氧体系的影响分析[J].中国高新技术企业,2008,(10):65-67.Zheng F S, Zheng S W. Analysis on the influence of alkalinity on anaerobic system[J]. China high-tech enterprises, 2008,(10):65-67.
[7]张旭,王宝贞,朱宏.厌氧消化体系的酸碱性及其缓冲能力[J].中国环境科学,1997,17(6):13-17.Zhang X, Wang B Z, Zhu H. Acidity and buffering capacity of anaerobic digestion system[J]. Chinese Environmental Science, 1997,17(6):13-17.
[8]王家卓,王建龙.缓冲体系对厌氧发酵生物产氢的影响[J].环境科学学报,2008,28(6):1136-1140.Wang J Z, Wang J L. Effect of buffer system on hydrogen production in anaerobic fermentation[J]. Journal of environmental science, 2008,28(6):1136-1140.
[9]苑宏英.基于酸碱调节的剩余污泥水解酸化及其机理研究[D].上海:同济大学,2006.Yuan H Y. Study on hydrolysis and acidification of surplus sludge based on acid-base regulation and its mechanism[D]. Shanghai:tongji university, 2006.
[10] Yuan Y, Liu Y, Li B, Wang B, Wang S and Peng Y. Short-Chain Fatty Acids Production and Microbial Community in Sludge Alkaline Fermentation:Long-Term Effect of Temperature[J]. Bioresource Technology, 2016,211:685-690.
[11]苏高强.剩余污泥碱性发酵产酸性能与优化[D].北京:北京工业大学,2013.Su G Q. Acid production and optimization of alkaline fermentation of residual sludge[D]. Beijing:Beijing university of technology, 2013.
[12] Yuan Y, Wang S Y, Liu Y, et al. Long-term effect of pH on short-chain fatty acids accumulation and microbial community in sludge fermentation systems[J]. Bioresource Technology, 2015,(197):56-63.
[13] Ana C C Pires, Daniel F R Cleary, Adelaide Almeida, et al. Denaturing gradient gel electrophoresis and barcoded pyrosequencing reveal unprecedented archaeal diversity in mangrove sediment and rhizosphere samples[J]. Applied and Environmental Microbiology,2012,78(16):5520-5528.
[14]李方,杨波,田晴,等.水解酸化应用于剩余污泥减量的试验研究[J].环境工程学报,2008,2(9):1247-1250.Li f, Yang B, Tian Q, et al. Experimental study on the application of hydrolytic acidification to the reduction of residual sludge[J]. Chinese journal of environmental engineering, 2008,2(9):1247-1250.
[15]陈志剑.添加金属离子对有机垃圾两相厌氧消化促进效果的试验研究[D].重庆:重庆大学,2007.Chen Z J. Experimental study on the effect of adding metal ions on two-phase anaerobic digestion of organic waste[D]. Chongqing:chongqing university, 2007.
[16]卓杨.高含固污泥水热预处理及厌氧消化组分转化研究[D].西安:西安建筑科技大学,2015.Zhuo Y. Research on hydrothermal pretreatment and anaerobic digestion components transformation of high solids sludge[D]. Xi'an:xi'an university of architecture and technology, 2015.
[17]朱建平,彭永臻,李晓玲,等.碱性发酵污泥脱水性能的变化及其原因分析[J].化工学报,2013,64(11):4210-4215.Zhu J P, Peng Y Z, Li X L, et al. Changes of dehydration performance of alkaline fermentation sludge and analysis of its causes[J]. Journalof chemical industry, 2013,64(11):4210-4215.
[18] Du R, Cao S, Li B, et al. Simultaneous Domestic Wastewater and Nitrate Sewage Treatment by Denitrifying Ammonium Oxidation(Deamox)in Sequencing Batch Reactor[J]. Chemosphere,2017,(174):399-407.
[19] Chen Y,Li M,Meng F,et al. Optimal Poly(3-Hydroxybutyrate/3-Hydroxy valerate)Biosynthesis by Fermentation Liquid From Primary and Waste Activated Sludge[J]. Environmental Technology, 2014,35(14):1791-1801.
[20] Liang B, Wang L Y,Serge M M, et al. Anaerolineaceae and Methanosaeta turned to be the dominant microorganisms in alkanesdependent methanogenic culture after long-term of incubation[J].AMB Express, 2015,5(1):117.
[21] Yamada T,Sekiguchi Y, Imachi H, et al. diversity,localization,and physiological properties of filamentous microbes belonging to chloroflexi subphylum I in mesophilic and thermophilic methanogenic sludge gran ules[J]. Applied and Environmental Microbiology, 2005,(71):7493-7503.
[22]刘晋仙,李毳,景炬辉,等.中条山十八河铜尾矿库微生物群落组成与环境适应性[J].环境科学,2017,38(1):318-326.Liu J X, Li J J, Jing J h, et al. Microbial community composition and environmental adaptability of copper tailings ponds in shibahe river,zhongtiao mountain[J]. Environmental science, 2017,38(1):318-326.
[23]赵光.两段式厌氧工艺产甲烷发酵特性及微生物生态调控机制研究[D].哈尔滨:哈尔滨工业大学,2013.Zhao G. Study on the characteristics of two-stage anaerobic methaneproducing fermentation and microbial ecological regulationmechanism[D]. Harbin:Harbin Institute of Technology, 2013.
[24]孙睿.Mec用于剩余污泥产氢产甲烷效能及微生物群落结构解析[D].哈尔滨:哈尔滨工业大学,2015.Sun R. Analysis on the efficiency and microbial community structure of Mec in the production of hydrogen and methane from surplus sludge[D]. Harbin:Harbin Institute of Technology, 2015.
[25]麻婷婷,承磊,刘来雁,等.不同抑制剂对乙酸降解产甲烷及产甲烷菌群结构的影响[J].微生物学报,2015,55(5):587-597.Ma T T, Cheng L, Liu L Y, et al. Effects of different inhibitors on acetic acid degradation and methanogenic flora structure[J]. Acta microbiologica sinica, 2015,55(5):587-597.
[26]吕育财,李宁,郭金玲,等.一组中温厌氧消化菌群高温启动过程中的菌群多样性变化研究[J].环境科学学报,2016,36(6):1986-1997.Lu Y C, Li N, Guo J 1, et al. Study on the change of micro flora diversity during the high temperature initiation of a group of anaerobic digestion microflora at medium temperature[J]. Journal of environmental science, 2016,36(6):1986-1997.
[27]李凯平.长链烷烃厌氧降解产甲烷体系的菌群组成及变化[D].上海:华东理工大学,2012.Li K P. Composition and changes of the microflora of methane production system by anaerobic degradation of long-chain alkanes[D].Shanghai:east China university of science and technology, 2012.
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