不同进水碳源对好氧污泥颗粒化与结构稳定影响研究
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摘要
好氧颗粒污泥工艺技术是近年来废水生物处理领域研究热点,但颗粒结构不稳定,形成机制不清楚限制其工业化应用。实验建立了两组序批式好氧生物反应器(Sequencing batch reactor,SBR),分别以乙酸钠(R1)和可溶性淀粉(R2)为主要进水碳源研究其对好氧污泥颗粒化与结构稳定的影响。结果表明,两组SBR反应器均可实现好氧污泥颗粒化,COD去除率达90%以上。相比而言,R1反应器运行15d即形成颗粒污泥,NH_4~+-N去除率达95%以上。不同工艺工况下信号分子变化表明多数信号分子可促进污泥由絮体向颗粒转化并维持颗粒稳定。激光共聚焦显微观察发现,R2形成的颗粒污泥表面吸附大量淀粉,形成的颗粒具有交友的污泥沉降性能,但其基质和DO的传质阻力较大,限制颗粒粒径增长与系统脱氮性能。通过增设缺氧段,反应器COD、TN去除性能进一步得到提升,表明好氧颗粒污泥技术可高效处理淀粉类难降解物质,在实际城镇污水处理中具有极大的应用前景。
引文
[1]王芳.SBAR中好氧颗粒污泥的培养及其特性研究[D].大连理工大学,2004.
[2]郑兴灿,李亚新.污水除磷脱氮技术.北京中国建筑工业出版社.1998,14-15.
[3]彭永臻,吴蕾,马勇等.好氧颗粒污泥的形成机制、特性及应用研究进展.环境科学.2010,31(2):273-281.
[4]王建龙,张子健,吴伟伟.好氧颗粒污泥的研究进展.环境科学学报.2009,29(3):449-473.
[5]de Kreuk MK,Kishida N,Tsuneda S,et al.Behavior of polymeric substrates in an aerobic granular sludge system.Water Research,2010,44:5929-5938.
[6]SipmaJ,Osuna MB,Emanuelsson MAE,et al.Biotreatment of Industrial Wastewaters under Transient-State Conditions:Process Stability with Fluctuations of Organic Load,Substrates,Toxicants,and Environmental Parameters.Critical Reviews in Environmental Science and Technology,2010,40:147-197.
[7]朱亮,徐向阳,罗伟国等.废水生物处理好氧污泥颗粒化研究进展[J].环境科学.2007,28(11):2657-2664.
[8]郑煜铭,俞汉青.2007b.用厌氧产氢反应器出水培养好氧颗粒污泥的研究[J].中国给水排水,23(1):30-33.
[9]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.
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[11]Rittmann.A Unified Theory for Extracellular Polymeric Substances,Soluble Microbial Products,and Active and Inert Biomass,Water Research.2002,36,2711-2720.
[12]张丽丽,陈效,陈建孟等.胞外多聚物在好氧颗粒污泥形成中的作用机制.环境科学.2007,28(4):795-799.
[13]Zheng YM,Yu HQ,Liu S-H,et al.Formation and instability of aerobic granules under high organic loading conditions.Chemosphere,2006,63:1791-1800.
[14]Nor-Anuar A,Ujang Z,van Loosdrecht MCM,et al.Strength characteristics of aerobic granular sludge.Water Science and Technology,2012,65;309-316.
[15]Zheng YM,Yu HQ,Sheng GP.Physical and chemical characteristics of granular activated sludge from a sequencing batch airlift reactor[J].Process Biochemistry,2005,40:645-650.
[16]Bassin JP,Prank M,Kraan R,et al.Ammonium adsorption in aerobic granular sludge,activated sludge and anammox granules[J].Water Research,2011,45:5257-5265.
[17]Tay JH,Liu Q S,Liu Y.Microscopic observation of aerobic granulation in sequential aerobic sludge blanket reactor[J].Journal of Applied Microbiology,2001,91(1):168-175.
[18]Wang X H,Zhang H M,Yang F L,et al.Improved stability and performance of aerobic granules under stepwise increased selection pressure[J].Enzyme and Microbial Technology,2007,41(3):205-211.
[19]Liu Y,JH Tay.The Essential Role of Hydrodynamic Shear Force in the Formation of Biofilm and Granular Sludge[J].Water Research,2002,36(7):1653-65.
[20]E.Suja,Y V Nancharaiah,T V Krishna Mohan,et al.Denitrification accelerates granular sludge formation in sequencing batch reactors[J].Bioresource Technology,2015(196):28-34.
[21]王芳,杨凤林,张兴文等.不同有机负荷下好氧颗粒污泥的特性[J].中国给水排水,2004(11):46-48.
[22]Li AJ,Li XY,Yu HQ.Granular activated carbon for aerobic sludge granulation in a bioreactor with a low-strength wastewater influent[J].Separation and Purification Technology,2011,80:276-283.
[23]Coma M,Puig S,Balaguer MD,et al.The role of nitrate and nitrite in a granular sludge process treating lowstrength wastewater[J].Chemical Engineering Journal,2010,164:208-213.
[24]Lei Qin,Joo-Hwa Tay,Y Liu.Selection pressure is a driving force of aerobic granulation in sequencing batch reactors[J].Process Biochemistry,2009(39):579-584.
[25]王超,郑晓英.剪切应力对好氧颗粒污泥形态结构和微生物活性的影响机制研究[J].环境科学,2008,29(8):2235-2241.
[26]Liu L,Sheng GP,Li WW,et al.Experimental and Numerical Analysis of the Hydrodynamic Behaviors of Aerobic Granules[J].Aiche Journal,2010,57:2909-2916.
[27]Ji G,Zhai F,Wang R,et aL Sludge granulation and performance of a low superficial gas velocity sequencing batch reactor(SBR)in the treatment of prepared sanitary wastewater[J].Bioresource Technology,2010,101:9058-9064.
[28]Yang S F,Li X Y,Yu H Q.Formation and characterisation of fungal and bacterial granules under different feeding alkalinity and pH conditions[J].Process Biochemistry,2008,43(1):8-14.
[29]张志,任洪强,张蓉蓉等,pH值对好氧颗粒污泥同步硝化反硝化过程的影响[J].中国环境科学,2005,25(6):650-654.
[30]艾石基,解庆林,马丽丽等.好氧颗粒污泥颗粒化影响因素及应用现状[J].环境科学与管理,2009,34(5):64-68.
[31]张岩,王永胜,白玉华等.泳动床/好氧颗粒污泥新技术处理生活污水的特性研究[J].环境科学,2007,28(10):2249-2254.
[32]Winkler MKH,Bassin JP,Kleerebezem R,et aL Selective sludge removal in a segregated aerobic granular biomass system as a strategy to control PAO-GAO competition at high temperatures[J].Water Research,2011,45:3291-3299.
[33]竺建荣,刘纯新,何建中等.厌-好氧交替工艺的生物除磷特性研究[J].环境科学学报,1999,19(4):394-398.
[2]郑兴灿,李亚新.污水除磷脱氮技术.北京中国建筑工业出版社.1998,14-15.
[3]彭永臻,吴蕾,马勇等.好氧颗粒污泥的形成机制、特性及应用研究进展.环境科学.2010,31(2):273-281.
[4]王建龙,张子健,吴伟伟.好氧颗粒污泥的研究进展.环境科学学报.2009,29(3):449-473.
[5]de Kreuk MK,Kishida N,Tsuneda S,et al.Behavior of polymeric substrates in an aerobic granular sludge system.Water Research,2010,44:5929-5938.
[6]SipmaJ,Osuna MB,Emanuelsson MAE,et al.Biotreatment of Industrial Wastewaters under Transient-State Conditions:Process Stability with Fluctuations of Organic Load,Substrates,Toxicants,and Environmental Parameters.Critical Reviews in Environmental Science and Technology,2010,40:147-197.
[7]朱亮,徐向阳,罗伟国等.废水生物处理好氧污泥颗粒化研究进展[J].环境科学.2007,28(11):2657-2664.
[8]郑煜铭,俞汉青.2007b.用厌氧产氢反应器出水培养好氧颗粒污泥的研究[J].中国给水排水,23(1):30-33.
[9]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.
[10]Tay J H,Liu Q S,Liu Y.Characteristics of aerobic granules grown on glucose and acetate in sequential aerobic sludge blanket reactors[J].Environmental Technology,2002,23(8):931-936
[11]Rittmann.A Unified Theory for Extracellular Polymeric Substances,Soluble Microbial Products,and Active and Inert Biomass,Water Research.2002,36,2711-2720.
[12]张丽丽,陈效,陈建孟等.胞外多聚物在好氧颗粒污泥形成中的作用机制.环境科学.2007,28(4):795-799.
[13]Zheng YM,Yu HQ,Liu S-H,et al.Formation and instability of aerobic granules under high organic loading conditions.Chemosphere,2006,63:1791-1800.
[14]Nor-Anuar A,Ujang Z,van Loosdrecht MCM,et al.Strength characteristics of aerobic granular sludge.Water Science and Technology,2012,65;309-316.
[15]Zheng YM,Yu HQ,Sheng GP.Physical and chemical characteristics of granular activated sludge from a sequencing batch airlift reactor[J].Process Biochemistry,2005,40:645-650.
[16]Bassin JP,Prank M,Kraan R,et al.Ammonium adsorption in aerobic granular sludge,activated sludge and anammox granules[J].Water Research,2011,45:5257-5265.
[17]Tay JH,Liu Q S,Liu Y.Microscopic observation of aerobic granulation in sequential aerobic sludge blanket reactor[J].Journal of Applied Microbiology,2001,91(1):168-175.
[18]Wang X H,Zhang H M,Yang F L,et al.Improved stability and performance of aerobic granules under stepwise increased selection pressure[J].Enzyme and Microbial Technology,2007,41(3):205-211.
[19]Liu Y,JH Tay.The Essential Role of Hydrodynamic Shear Force in the Formation of Biofilm and Granular Sludge[J].Water Research,2002,36(7):1653-65.
[20]E.Suja,Y V Nancharaiah,T V Krishna Mohan,et al.Denitrification accelerates granular sludge formation in sequencing batch reactors[J].Bioresource Technology,2015(196):28-34.
[21]王芳,杨凤林,张兴文等.不同有机负荷下好氧颗粒污泥的特性[J].中国给水排水,2004(11):46-48.
[22]Li AJ,Li XY,Yu HQ.Granular activated carbon for aerobic sludge granulation in a bioreactor with a low-strength wastewater influent[J].Separation and Purification Technology,2011,80:276-283.
[23]Coma M,Puig S,Balaguer MD,et al.The role of nitrate and nitrite in a granular sludge process treating lowstrength wastewater[J].Chemical Engineering Journal,2010,164:208-213.
[24]Lei Qin,Joo-Hwa Tay,Y Liu.Selection pressure is a driving force of aerobic granulation in sequencing batch reactors[J].Process Biochemistry,2009(39):579-584.
[25]王超,郑晓英.剪切应力对好氧颗粒污泥形态结构和微生物活性的影响机制研究[J].环境科学,2008,29(8):2235-2241.
[26]Liu L,Sheng GP,Li WW,et al.Experimental and Numerical Analysis of the Hydrodynamic Behaviors of Aerobic Granules[J].Aiche Journal,2010,57:2909-2916.
[27]Ji G,Zhai F,Wang R,et aL Sludge granulation and performance of a low superficial gas velocity sequencing batch reactor(SBR)in the treatment of prepared sanitary wastewater[J].Bioresource Technology,2010,101:9058-9064.
[28]Yang S F,Li X Y,Yu H Q.Formation and characterisation of fungal and bacterial granules under different feeding alkalinity and pH conditions[J].Process Biochemistry,2008,43(1):8-14.
[29]张志,任洪强,张蓉蓉等,pH值对好氧颗粒污泥同步硝化反硝化过程的影响[J].中国环境科学,2005,25(6):650-654.
[30]艾石基,解庆林,马丽丽等.好氧颗粒污泥颗粒化影响因素及应用现状[J].环境科学与管理,2009,34(5):64-68.
[31]张岩,王永胜,白玉华等.泳动床/好氧颗粒污泥新技术处理生活污水的特性研究[J].环境科学,2007,28(10):2249-2254.
[32]Winkler MKH,Bassin JP,Kleerebezem R,et aL Selective sludge removal in a segregated aerobic granular biomass system as a strategy to control PAO-GAO competition at high temperatures[J].Water Research,2011,45:3291-3299.
[33]竺建荣,刘纯新,何建中等.厌-好氧交替工艺的生物除磷特性研究[J].环境科学学报,1999,19(4):394-398.