金属离子屏蔽腐殖酸对污泥厌氧消化抑制作用实验研究
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摘要
以实验室培养、几乎不含腐殖质和金属离子的剩余污泥为研究对象,选择与市政污泥中腐殖酸特征相近的市售腐殖酸作为外加填充腐殖质,通过投加外源金属离子实验研究屏蔽腐殖质对污泥厌氧消化过程的抑制作用.结果表明,单独投加Ca2+与Al3+可分别获得65.4%和65.7%的屏蔽抑制率;Ca2++Al3+组合投加效果更佳,可获得高达80.1%的屏蔽抑制率,具有"1+1>2"的屏蔽抑制效果.然而,过高的金属离子含量(或组合含量)不仅无助于进一步提高屏蔽抑制效果,反而会因抑制微生物活性而导致屏蔽抑制率下降.Ca2+通过阳离子交换产生屏蔽抑制作用,而Al3+主要靠静电作用和网捕卷扫作用产生屏蔽效果.在屏蔽腐殖酸抑制方面,三价金属离子好于二价金属离子的原因是两者的静电作用力大小、作用方式、环境效果不尽相同.
Based on excess sludge cultured in laboratory with little humic substances and metals and by using merchandized humic acid which is similar to humic substance in municipal sludge in characteristics,shielding the inhibition of humic substances on the processes of anaerobic digestion of excess sludge was experimentally studied by dosing metals into the cultured sludge. Individually dosing Ca2+or Al3+could shield 65. 4% and 65. 7% on the inhibition ratio respectively; together dosing Ca2++Al3+made an even better the inhibition ratio,up to 80.1%,posing a shielding effect of"1+1>2"on the inhibition. However,over-dosing metals or their combination did not promote any higher shielding inhibition ratio; conversely,the shielding inhibition ratio get down due to inhibiting microorganisms' activity. Ca2+mainly mitigates the inhibition on hydrolysis by cation exchange with humic acid; Al3+takes effect on the inhibition by electrostatic action and catching-sweeping. On shielding the inhibition of humic acid,trivalent metal is better than divalent metal due to different electrostatic actions,acting ways and environmental effects.
Based on excess sludge cultured in laboratory with little humic substances and metals and by using merchandized humic acid which is similar to humic substance in municipal sludge in characteristics,shielding the inhibition of humic substances on the processes of anaerobic digestion of excess sludge was experimentally studied by dosing metals into the cultured sludge. Individually dosing Ca2+or Al3+could shield 65. 4% and 65. 7% on the inhibition ratio respectively; together dosing Ca2++Al3+made an even better the inhibition ratio,up to 80.1%,posing a shielding effect of"1+1>2"on the inhibition. However,over-dosing metals or their combination did not promote any higher shielding inhibition ratio; conversely,the shielding inhibition ratio get down due to inhibiting microorganisms' activity. Ca2+mainly mitigates the inhibition on hydrolysis by cation exchange with humic acid; Al3+takes effect on the inhibition by electrostatic action and catching-sweeping. On shielding the inhibition of humic acid,trivalent metal is better than divalent metal due to different electrostatic actions,acting ways and environmental effects.
引文
Abbott T,Eskicioglu C.2015.Effects of metal salt addition on odor and process stability during the anaerobic digestion of municipal waste sludge[J].Waste Management,46:449-458
American Public Health Association(APHA),American Water Works Association,Water Pollution Control Federation,et al.2012.Standard Methods for the Examination of Water and Wastewater[M].Washington DC,USA:APHA
Cabirol N,Barragán E J,Durán A,et al.2003.Effect of aluminium and sulphate on anaerobic digestion of sludge from wastewater enhanced primary treatment[J].Water Science and Technology,48(6):235
Donner E,Brunetti G,Zarcinas B,et al.2013.Effects of chemica amendments on the lability and speciation of metals in anaerobically digested biosolids.[J].Environmental Science and Technology,47(19):11157-11165
Eskicioglu C,Prorot A,Marin J,et al.2008.Synergetic pretreatment of sewage sludge by microwave irradiation in presence of H2O2for enhanced anaerobic digestion[J].Water Research,42(18):4674-4682
方芳,刘国强,郭劲松,等.2008.活性污泥法对水溶性腐殖酸的去除效能与机制研究[J].环境科学,29(8):2266-2270
樊艳丽,孔秀琴,牛佳雪.2014.活性污泥法处理高钙废水中污泥特性的变化[J].环境工程学报,8(9):3670-3674
郝晓地.2014.污水处理碳中和运行技术[M].北京:科学出版社
郝晓地,唐兴,曹达啓.2018.腐殖酸影响剩余污泥厌氧消化过程实验研究[J].环境科学学报,38(8):3061-3068
郝晓地,唐兴,曹亚莉.2017.腐殖质对污泥厌氧消化的影响及其屏蔽方法[J].环境科学学报,37(2):407-418
Hayes M H B.1989.Humic Substances II:In Search of Structure[M].Chichester:John Wiley and Sons Ltd
Ladd J N,Butler J H A.1970.The effect of inorganic cations on the inhibition and stimulation of protease activity by soil humic acids[J].Soil Biology and Biochemistry,2(1):33-40
Langerak E P A V,Gonzalez-Gil G,Aelst A V,et al.1998.Effects of high calcium concentrations on the development of methanogenic sludge in upflow anaerobic sludge bed(UASB)reactors[J].Water Research,32(4):1255-1263
Li D,Zhou Y,Tan Y,et al.2016.Alkali-solubilized organic matter from sludge and its degradability in the anaerobic process[J].Bioresource Technology,200:579-586
梁聪,邓慧萍,苏宇,等.2006.聚合硫酸铁、硫酸铝强化混凝去除腐殖酸[J].净水技术,25(2):27-31
刘杨.2007.腐殖酸与铝盐混凝剂的选择配位特性[D].西安:西安建筑科技大学
Luo K,Yang Q,Li X M,et al.2013.Novel insights into enzymaticenhanced anaerobic digestion of waste activated sludge by threedimensional excitation and emission matrix fluorescence spectroscopy[J].Chemosphere,91(5):579-585
略布契柯夫.1954.离子交换剂及其应用[M].北京:中国科学出版社
莫懿娉,陈志坚,迟莉娜,等.2006.铝离子浓度对厌氧处理城市污水混凝污泥的影响[J].中国给水排水,22(11):100-103
Plimpton S J,Lawton W E.1936.A very accurate test of Coulomb's law of force between charges[J].Physical Review,50(11):1066
Samarage H.1996.Interactions between alum and organics in coagulation[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,113(1/2):155-163
斯蒂文森.1994.腐殖质化学[M].北京:北京农业大学出版社
Tipping E,Lofts S,Sonke J E.2011.Humic ion-binding model VII:a revised parameterisation of cation-binding by humic substances[J].Environmental Chemistry,8(3):225-235
王一明,林先贵,徐江兵.2006.腐殖化进程中的微生物[C].第六届全国绿色环保肥料新技术、新产品交流会.南京
Wu H S,Zhang A Q,Wang L S.2004.Immobilization study of biosorption of heavy metal ions onto activated sludge[J].Acta Scientiae Circumstantiae,16(4):640-645
Yang Y,Li H,Li J.2014.Variation in humic and fulvic acids during thermal sludge treatment assessed by size fractionation,elementary analysis,and spectroscopic methods[J].Frontiers of Environmental Science and Engineering,8(6):854-862
Yu Z,Wen X,Xu M,et al.2012.Anaerobic digestibility of the waste activated sludge discharged from large-scale membrane bioreactors[J].Bioresource Technology,126(12):358-361
张胜,许海凤,张盼月,等.2014.金属铁铝对混凝强化初沉污泥中温厌氧消化的影响[J].环境工程学报,8(2):735-739
张万友,武倩,金立忠,等.2011.聚硅酸钙铝混凝剂处理造纸中段废水[J].中华纸业,32(22):59-62
American Public Health Association(APHA),American Water Works Association,Water Pollution Control Federation,et al.2012.Standard Methods for the Examination of Water and Wastewater[M].Washington DC,USA:APHA
Cabirol N,Barragán E J,Durán A,et al.2003.Effect of aluminium and sulphate on anaerobic digestion of sludge from wastewater enhanced primary treatment[J].Water Science and Technology,48(6):235
Donner E,Brunetti G,Zarcinas B,et al.2013.Effects of chemica amendments on the lability and speciation of metals in anaerobically digested biosolids.[J].Environmental Science and Technology,47(19):11157-11165
Eskicioglu C,Prorot A,Marin J,et al.2008.Synergetic pretreatment of sewage sludge by microwave irradiation in presence of H2O2for enhanced anaerobic digestion[J].Water Research,42(18):4674-4682
方芳,刘国强,郭劲松,等.2008.活性污泥法对水溶性腐殖酸的去除效能与机制研究[J].环境科学,29(8):2266-2270
樊艳丽,孔秀琴,牛佳雪.2014.活性污泥法处理高钙废水中污泥特性的变化[J].环境工程学报,8(9):3670-3674
郝晓地.2014.污水处理碳中和运行技术[M].北京:科学出版社
郝晓地,唐兴,曹达啓.2018.腐殖酸影响剩余污泥厌氧消化过程实验研究[J].环境科学学报,38(8):3061-3068
郝晓地,唐兴,曹亚莉.2017.腐殖质对污泥厌氧消化的影响及其屏蔽方法[J].环境科学学报,37(2):407-418
Hayes M H B.1989.Humic Substances II:In Search of Structure[M].Chichester:John Wiley and Sons Ltd
Ladd J N,Butler J H A.1970.The effect of inorganic cations on the inhibition and stimulation of protease activity by soil humic acids[J].Soil Biology and Biochemistry,2(1):33-40
Langerak E P A V,Gonzalez-Gil G,Aelst A V,et al.1998.Effects of high calcium concentrations on the development of methanogenic sludge in upflow anaerobic sludge bed(UASB)reactors[J].Water Research,32(4):1255-1263
Li D,Zhou Y,Tan Y,et al.2016.Alkali-solubilized organic matter from sludge and its degradability in the anaerobic process[J].Bioresource Technology,200:579-586
梁聪,邓慧萍,苏宇,等.2006.聚合硫酸铁、硫酸铝强化混凝去除腐殖酸[J].净水技术,25(2):27-31
刘杨.2007.腐殖酸与铝盐混凝剂的选择配位特性[D].西安:西安建筑科技大学
Luo K,Yang Q,Li X M,et al.2013.Novel insights into enzymaticenhanced anaerobic digestion of waste activated sludge by threedimensional excitation and emission matrix fluorescence spectroscopy[J].Chemosphere,91(5):579-585
略布契柯夫.1954.离子交换剂及其应用[M].北京:中国科学出版社
莫懿娉,陈志坚,迟莉娜,等.2006.铝离子浓度对厌氧处理城市污水混凝污泥的影响[J].中国给水排水,22(11):100-103
Plimpton S J,Lawton W E.1936.A very accurate test of Coulomb's law of force between charges[J].Physical Review,50(11):1066
Samarage H.1996.Interactions between alum and organics in coagulation[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,113(1/2):155-163
斯蒂文森.1994.腐殖质化学[M].北京:北京农业大学出版社
Tipping E,Lofts S,Sonke J E.2011.Humic ion-binding model VII:a revised parameterisation of cation-binding by humic substances[J].Environmental Chemistry,8(3):225-235
王一明,林先贵,徐江兵.2006.腐殖化进程中的微生物[C].第六届全国绿色环保肥料新技术、新产品交流会.南京
Wu H S,Zhang A Q,Wang L S.2004.Immobilization study of biosorption of heavy metal ions onto activated sludge[J].Acta Scientiae Circumstantiae,16(4):640-645
Yang Y,Li H,Li J.2014.Variation in humic and fulvic acids during thermal sludge treatment assessed by size fractionation,elementary analysis,and spectroscopic methods[J].Frontiers of Environmental Science and Engineering,8(6):854-862
Yu Z,Wen X,Xu M,et al.2012.Anaerobic digestibility of the waste activated sludge discharged from large-scale membrane bioreactors[J].Bioresource Technology,126(12):358-361
张胜,许海凤,张盼月,等.2014.金属铁铝对混凝强化初沉污泥中温厌氧消化的影响[J].环境工程学报,8(2):735-739
张万友,武倩,金立忠,等.2011.聚硅酸钙铝混凝剂处理造纸中段废水[J].中华纸业,32(22):59-62