料液上升流速对厌氧产氢颗粒污泥的影响
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摘要
为研究水力因素对升流式厌氧污泥床(UASB)反应器产氢颗粒污泥的影响,通过内循环方式改变料液上升流速,探讨其对颗粒污泥性能和产氢效能的影响。结果表明,料液上升流速从0.15 m·h~(-1)增至0.6 m·h~(-1),颗粒污泥胞外聚合物(EPS)含量从99.48 mg·g~(-1)VSS增至214.51 mg·g~(-1)VSS,平均粒径从0.7 mm增至1.48 mm;松散附着的胞外聚合物(LB-EPS)在EPS中含量百分比减少,而紧密粘附的胞外聚合物(TB-EPS)含量百分比增加;颗粒污泥强度增大;产氢细菌相对丰度从59.52%增至66.45%;此过程产氢速率维持在16.08～17.04 L·d~(-1)。上升流速增至1.2 m·h~(-1),污泥沉降性能变差,产氢率显著降低。研究揭示水力因素对产氢颗粒污泥特性的影响,为UASB产氢反应器调控提供参考。
In order to study the effect of hydrodynamic factor on the hydrogen-producing granular sludge in the upflow anaerobic sludge blanket(UASB) reactor, the liquid upflow velocity was changed by the internal circulation method to investigate its effects on the hydrogen production efficiency and the granular sludge characteristics. The results showed that as the increase of upflow velocity ranging from0.15 m · h~(-1) to 0.6 m · h~(-1). The extracellular polymeric substance(EPS) content increased from 99.48 mg·g~(-1) VSS to 214.51 mg.g~(-1) VSS, and the proportion of loosely bound EPS(LB-EPS) decreased while the proportion of tightly bound EPS(TB-EPS) increased; The granular sludge strength increased, and the size of the granular sludge increased from 0.7 mm to 1.48 mm; The relative abundance of hydrogenproducing bacteria increased from 59.52% to 66.45%; The hydrogen production rate re-mained within the ranges of 16.08-17.04 L · d~(-1). However, with the increasing upflow velocity ranging from 0.6 m · h~(-1) to 1.2 m · h~(-1), the sludge sedimentation performance deteriorated, and the hydrogen production rate decreased significantly. This study revealed the effect of hydrodynamic factor on the hydrogen-producing granular sludge, thus providing references for the regulation of the hydrogen-producing UASB reactor.
In order to study the effect of hydrodynamic factor on the hydrogen-producing granular sludge in the upflow anaerobic sludge blanket(UASB) reactor, the liquid upflow velocity was changed by the internal circulation method to investigate its effects on the hydrogen production efficiency and the granular sludge characteristics. The results showed that as the increase of upflow velocity ranging from0.15 m · h~(-1) to 0.6 m · h~(-1). The extracellular polymeric substance(EPS) content increased from 99.48 mg·g~(-1) VSS to 214.51 mg.g~(-1) VSS, and the proportion of loosely bound EPS(LB-EPS) decreased while the proportion of tightly bound EPS(TB-EPS) increased; The granular sludge strength increased, and the size of the granular sludge increased from 0.7 mm to 1.48 mm; The relative abundance of hydrogenproducing bacteria increased from 59.52% to 66.45%; The hydrogen production rate re-mained within the ranges of 16.08-17.04 L · d~(-1). However, with the increasing upflow velocity ranging from 0.6 m · h~(-1) to 1.2 m · h~(-1), the sludge sedimentation performance deteriorated, and the hydrogen production rate decreased significantly. This study revealed the effect of hydrodynamic factor on the hydrogen-producing granular sludge, thus providing references for the regulation of the hydrogen-producing UASB reactor.
引文
[1]任南琪.厌氧生物技术原理与应用[M].北京:化学工业出版社,2004.
[2]任婷婷.微生物颗粒反应器的水动力学[D].合肥:中国科学技术大学, 2008.
[3]刘双江,胡纪萃. UASB反应器系统中污泥颗粒化研究进展[J].中国环境科学, 1990, 10(5):343-346.
[4] Liu Y, Xu H L, Show K Y, et al. Anaerobic granulation technology for wastewater treatment[J]. World Journal of Microbiology&Biotechnology, 2002, 18(2):99-113.
[5]郭婉茜.附着型和颗粒型膨胀床生物制氢反应器的运行调控[D].哈尔滨:哈尔滨工业大学, 2008.
[6] Chang F Y, Lin C Y. Biohydrogen production using an up-flow anaerobic sludge blanket reactor[J]. International Journal of Hydrogen Energy, 2014, 29(1):33-39.
[7] Sivagurunathan P, Anburajan P, Kumar G, et al. High-rate hydrogen production from galactose in an upflow anaerobic sludge blanket reactor(UASBr)[J]. Rsc Advances, 2016, 6(64):59823-59833.
[8]刘爽,李文哲.猪粪与马铃薯皮渣混合厌氧发酵产氢特性[J].农业工程学报, 2012, 28(16):197-202.
[9]宣科佳.颗粒污泥和絮状污泥物理性质与分形特征研究[D].北京:北京林业大学, 2009.
[10]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法（第四版）[M].北京:中国环境科学出版社,2002.
[11]张丽丽,姜理英,方芳,等.好氧颗粒污泥胞外多聚物的提取及成分分析[J].环境工程学报, 2007, 1(4):127-130.
[12] Sheng G P, Yu H Q, Li X Y. Stability of sludge flocs under shear conditions[J]. Biochemical Engineering Journal, 2008, 38(3):302-308.
[13]毕蕾.升流式厌氧反应器中水力剪切力对颗粒污泥的影响研究[D].北京:清华大学, 2007.
[14] Morgan J W, Evison L M, Forster C F. Upflow sludge blanket reactors:The effect of bio-supplements on performance and granulation[J]. Journal of Chemical Technology&Biotechnology,2009, 52(2):243-255.
[15]蔡春光,刘军深,蔡伟民.胞外多聚物在好氧颗粒化中的作用机理[J].中国环境科学, 2004, 24(5):623-626.
[16] Yu G H, He P J, Shao L M, et al. Stratification structure of sludge flocs with implications to dewaterability[J]. Environmental Science&Technology, 2008, 42(21):7944-7949.
[17]王凯军.厌氧生物技术[M].北京:化学工业出版社, 2015.
[18]吴静,周红明,姜洁.水力剪切力对厌氧反应器启动的影响[J].环境科学, 2010(2):368-372.
[19] Jung K W, Cho S K, Yun Y M, et al. Rapid formation of hydrogenproducing granules in an up-flow anaerobic sludge blanket reactor coupled with high-rate recirculation[J]. International Journal of Hydrogen Energy, 2013, 38(22):9097-9103.
[20]刘晓猛.微生物聚集体的相互作用及形成机制[D].合肥:中国科学技术大学, 2008.
[21]钟天意,冯骞,于阳阳,等.水动力作用对生物膜形成特性和群体感应系统的影响[J].净水技术, 2017, 36(11):26-32.
[22]李克勋,徐智华,张振家.水力作用对颗粒污泥形成的影响[J].中国沼气, 2003, 21(1):12-14.
[23]李永林,范文雯,袁林江,等.气升流速变化对SBR污泥颗粒化的作用及机理[J].环境科学学报, 2017, 37(10):3642-3648.
[2]任婷婷.微生物颗粒反应器的水动力学[D].合肥:中国科学技术大学, 2008.
[3]刘双江,胡纪萃. UASB反应器系统中污泥颗粒化研究进展[J].中国环境科学, 1990, 10(5):343-346.
[4] Liu Y, Xu H L, Show K Y, et al. Anaerobic granulation technology for wastewater treatment[J]. World Journal of Microbiology&Biotechnology, 2002, 18(2):99-113.
[5]郭婉茜.附着型和颗粒型膨胀床生物制氢反应器的运行调控[D].哈尔滨:哈尔滨工业大学, 2008.
[6] Chang F Y, Lin C Y. Biohydrogen production using an up-flow anaerobic sludge blanket reactor[J]. International Journal of Hydrogen Energy, 2014, 29(1):33-39.
[7] Sivagurunathan P, Anburajan P, Kumar G, et al. High-rate hydrogen production from galactose in an upflow anaerobic sludge blanket reactor(UASBr)[J]. Rsc Advances, 2016, 6(64):59823-59833.
[8]刘爽,李文哲.猪粪与马铃薯皮渣混合厌氧发酵产氢特性[J].农业工程学报, 2012, 28(16):197-202.
[9]宣科佳.颗粒污泥和絮状污泥物理性质与分形特征研究[D].北京:北京林业大学, 2009.
[10]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法（第四版）[M].北京:中国环境科学出版社,2002.
[11]张丽丽,姜理英,方芳,等.好氧颗粒污泥胞外多聚物的提取及成分分析[J].环境工程学报, 2007, 1(4):127-130.
[12] Sheng G P, Yu H Q, Li X Y. Stability of sludge flocs under shear conditions[J]. Biochemical Engineering Journal, 2008, 38(3):302-308.
[13]毕蕾.升流式厌氧反应器中水力剪切力对颗粒污泥的影响研究[D].北京:清华大学, 2007.
[14] Morgan J W, Evison L M, Forster C F. Upflow sludge blanket reactors:The effect of bio-supplements on performance and granulation[J]. Journal of Chemical Technology&Biotechnology,2009, 52(2):243-255.
[15]蔡春光,刘军深,蔡伟民.胞外多聚物在好氧颗粒化中的作用机理[J].中国环境科学, 2004, 24(5):623-626.
[16] Yu G H, He P J, Shao L M, et al. Stratification structure of sludge flocs with implications to dewaterability[J]. Environmental Science&Technology, 2008, 42(21):7944-7949.
[17]王凯军.厌氧生物技术[M].北京:化学工业出版社, 2015.
[18]吴静,周红明,姜洁.水力剪切力对厌氧反应器启动的影响[J].环境科学, 2010(2):368-372.
[19] Jung K W, Cho S K, Yun Y M, et al. Rapid formation of hydrogenproducing granules in an up-flow anaerobic sludge blanket reactor coupled with high-rate recirculation[J]. International Journal of Hydrogen Energy, 2013, 38(22):9097-9103.
[20]刘晓猛.微生物聚集体的相互作用及形成机制[D].合肥:中国科学技术大学, 2008.
[21]钟天意,冯骞,于阳阳,等.水动力作用对生物膜形成特性和群体感应系统的影响[J].净水技术, 2017, 36(11):26-32.
[22]李克勋,徐智华,张振家.水力作用对颗粒污泥形成的影响[J].中国沼气, 2003, 21(1):12-14.
[23]李永林,范文雯,袁林江,等.气升流速变化对SBR污泥颗粒化的作用及机理[J].环境科学学报, 2017, 37(10):3642-3648.
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