基于Fe(OH)_3晶核的好氧颗粒污泥培养及性能
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摘要
为了快速培养好氧颗粒污泥,解决颗粒污泥成粒时间长的难题,在气提式序批反应器(SBAR)中,以絮状污泥为接种污泥,投加污泥质量分数为5%的Fe(OH)_3絮体作为好氧颗粒污泥晶核的条件下,研究Fe(OH)_3絮体为晶核对好氧颗粒污泥的形成的影响。结果表明,添加了Fe(OH)_3絮体的实验组(R2)的成粒时间比未添加Fe(OH)_3絮体的对照组(R1)的成粒时间缩短了8 d,达到污泥颗粒的成熟期缩短了10 d。铁颗粒污泥的活性、粒径分布及外观形态等方面都优于普通的好氧颗粒污泥,并且其对TN的去除效率有明显的优势。
In order to fasten the cultivation of aerobic granular sludge and shorten the granulation time of granule sludge, flocculent sludge was used as seed sludge in a stripping batch reactor(SBAR), and Fe(OH)_3 with a mass fraction of 5% was added as granular sludge nucleus under the aerobic condition,the effect of Fe(OH)_3 on the formation of aerobic granular sludge was investigated. The results showed that the granulation time of the experimental group(R2) containing Fe(OH)_3 was shortened by 8 d compared to the control group(R1) without Fe(OH)_3 , the maturity of the particles was shortened by 10 d.The activity, particle size distribution and morphology of iron granule sludge were all superior to ordinary aerobic granular sludge, and its removal efficiency of total nitrogen had an obvious advantage.
In order to fasten the cultivation of aerobic granular sludge and shorten the granulation time of granule sludge, flocculent sludge was used as seed sludge in a stripping batch reactor(SBAR), and Fe(OH)_3 with a mass fraction of 5% was added as granular sludge nucleus under the aerobic condition,the effect of Fe(OH)_3 on the formation of aerobic granular sludge was investigated. The results showed that the granulation time of the experimental group(R2) containing Fe(OH)_3 was shortened by 8 d compared to the control group(R1) without Fe(OH)_3 , the maturity of the particles was shortened by 10 d.The activity, particle size distribution and morphology of iron granule sludge were all superior to ordinary aerobic granular sludge, and its removal efficiency of total nitrogen had an obvious advantage.
引文
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[3] WANG S G, LIU X W, GONG W X, et al. Aerobic granulation with brewery wastewater in a sequencing batch reactor[J].Bioresour Technol,2007,98:2142-2147.
[4] WANG H L, LI L, LI P, et al. The acceleration of sludge granulation using the chlamydospores of Phanerochaete sp. HSD[J].J Hazard.Mater,2011,192:963-969.
[5] HOEK J P V D. Granulation of denitrifying sludge; proceedings of the Proc GASMAT Workshop Granular anaerobic sludge[C].Lunteren Pudoc:Microbiology and Technology,1988:203-210.
[6]魏燕杰,季民,李国一,等.投加粉末活性炭强化好氧颗粒污泥的稳定性[J].天津大学学报,2012,45(3):247-253.
[7]李星,刘永军,刘喆,等.聚合氯化铝投加时期对好氧颗粒污泥形成的影响[J].安全与环境学报,2016(2):314-318.
[8]邹海燕,奚旦立.生物铁法-SMBR性能的研究[J].环境科学,2005,26(6):65-70.
[9]冀世锋,奚旦立.生物铁法-膜生物反应器中膜过滤特性的研究[J].膜科学与技术,2008,28(4):19-25.
[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[M].4版.北京:中国环境科学出版社,2002.
[11] Y J LIU, LIU ZHE, ZHANG A N, et al. The role of EPS concentration on membrane fouling control:Comparison analysis of hybrid membrane bioreactor and conventional membrane bioreactor[J].Desalination,2012,305:38-43.
[12] BHUNIA P, GHANGREKAR M M. Required minimum granule size in UASB reactor and characteristics variation with size[J].Bioresource Technology,2007,98(5):994-999.
[13]谢锴,李军,马挺,等.表层附着累枝虫的好氧颗粒污泥特性[J].环境科学学报,2015,35(4):1012-8.
[14] LETTINGA G, VELSEN, A F M V, HOBMA S W, et al. Use of the upflow sludge blanket(USB)reactor concept for biological wastewater treatment, especially for anaerobic treatment[J].Biotechnology&Bioengineering,1980,22(4):699-734.
[15] ADAV S S, LEE D, SHOW K, et al. Aerobic granular sludge:Recent advances[J].Biotechnology Advances,2008,26(5):411-423.
[16] TAY J H, LIU Q S, LIU Y. The effects of shear force on the formation,structure and metabolism of aerbic granules[J].Appl Microbiol Biotechnol,2001,57:227-233
[17] FLEMMING H C, WINGENDER J. Relevance of microbial extracellular polymeric substances(EPSs)Part I:Structural and ecological aspects[J].Water Sci Technol,2001,43(6):1-8.
[18] LASPIDOU G S, RITTMANN B E. A unified theory for extracellular polymeric substances, soluble microbial products, and active and inert biomass[J].Water Research,2002,36(11):2711-2720.
[19] DIGANCE M F, URBAIN V, RYBACKI D, et al. Chemical description of extracellular polymers:implication on activated sludge floc structure[J].Water Science and Technology,1998,38(8):45-53.
[20] MERSI W V, SCHINNER F. An improved and accurate method for determining the dehydrogenase activity of soils with iodonitrotetrazolium chloride[J].Biology&Fertility of Soils,1991,11(3):216-220.
[21]孙天华,林少宁,余智梅,等.生物铁法处理高浓度难降解印染废水的研究[J].中国环境科学,1991,11(2):138-142.