排硫硫杆菌净化处理沼气中H_2S实验研究
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摘要
文章以排硫硫杆菌(Tiobacillus thioparus)作为接种菌株,实验了活性炭填料生物滴滤塔对沼气中H_2S的去除性能,研究了进气H_2S浓度、气体停留时间等参数对生物滴滤塔去除沼气中H_2S性能的影响。结果表明,以球状活性炭为填料,采用排硫硫杆菌接种生物滴滤塔处理含H_2S沼气,挂膜速度快,系统运行稳定且脱硫效率高。固定进气H_2S浓度1000 ppm,停留时间大于29 s时,H_2S去除率可以达到95%以上。动力学分析表明,生物降解一级反应动力学方程能够较好地与实验数据吻合,最大H_2S去除负荷为588.02 g·m~(-3)h~(-1)。随着实验的进行,填料塔的压力降会因为生物膜的生长和单质硫的积累逐渐增加,严重时导致气体完全堵塞,需要进行鼓泡反冲以除去积累的单质硫。
In this paper, a Biotrickling filter system with Tiobacillus thioparus immobilized on granular active carbon as packing materials was used to eliminate H_2S from biogas.The effect of influent H_2S concentration, gas retention time on the H_2S removal efficiency were investigated. It was found that the biotrickling filter system showed high bacteria adsorption capacity and high H_2S removal capacity. The removal efficiency was above 95% at influent H_2S concentration of 1000 ppm when the retention time was more than 29 s. The kinetic analysis showed that the maximum removal capacity of the system were 588.02 g·m~(-3)h~(-1). The biotrickling filter need to be back washed when the bed pressure drop was too high due to the overgrowth of bacteria and sulfur accumulation.
In this paper, a Biotrickling filter system with Tiobacillus thioparus immobilized on granular active carbon as packing materials was used to eliminate H_2S from biogas.The effect of influent H_2S concentration, gas retention time on the H_2S removal efficiency were investigated. It was found that the biotrickling filter system showed high bacteria adsorption capacity and high H_2S removal capacity. The removal efficiency was above 95% at influent H_2S concentration of 1000 ppm when the retention time was more than 29 s. The kinetic analysis showed that the maximum removal capacity of the system were 588.02 g·m~(-3)h~(-1). The biotrickling filter need to be back washed when the bed pressure drop was too high due to the overgrowth of bacteria and sulfur accumulation.
引文
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[5] Aroca G,Urrutia H,Nunez D.Comparison on the removal of hydrogen sulfide in biotrickling filters inoculated with Thiobacillus thioparus and Acidithiobacillus thiooxidans[J].Electronic Journal of Biotechnology,2007,10(4):514-520.
[6] Jin Y,Veiga M C,Kennes C.Autotrophic deodorization of hydrogen sulfide in a biotrickling filter[J].Journal of Chemical Technology Biotechnology,2010,80(9):998-1004.
[7] Kimberley Tang,Vikrama Baskaran,Mehdi Nemati.Bacteria of the sulphur cycle:An overview of microbiology,biokinetics and their role in petroleum and mining industries[J].Biochemical Engineering Journal,2009,44:73-94.
[8] Rattanapan C,Boonsawang P,Kantachote D.Removal of H2S in down-flow GAC biofiltration using sulfide oxidizing bacteria from concentrated latex wastewater[J].Bioresource Technology,2009,100(1):125-130.
[9] 马艳玲.固定化脱氮硫杆菌脱除硫化氢废气的研究[D].西安:西安交通大学,2006.
[10] Ottengraf S P,van den Oever A H.Kinetics of organic compound removal from waste gases with a biological filter[J].Biotechnol Bioeng,1983,25(12):3089-3102.
[11] Wani A H,Lau A K,Branion,R M.Biofiltration control of pulping odors-hydrogen sulfide:performance,macrokinetics and coexistence effects of organo-sulfur species[J].J Chem Technol Biotechnol,1999,74:9-16.
[2] Abatzoglou N,Boivin S.A review of biogas purification processes[J].Biofuels Bioproducts & Biorefining,2009,3(1):42-71.
[3] Pokorna D,Zabranska J.Sulfur-oxidizing bacteria in environmental technology[J].Biotechnology Advances,2015,33(6):1246-1259.
[4] 葛洁.生物滴滤塔净化H2S气体的菌种筛选、填料改性及反应动力学分析[D].西安:西安建筑科技大学,2011.
[5] Aroca G,Urrutia H,Nunez D.Comparison on the removal of hydrogen sulfide in biotrickling filters inoculated with Thiobacillus thioparus and Acidithiobacillus thiooxidans[J].Electronic Journal of Biotechnology,2007,10(4):514-520.
[6] Jin Y,Veiga M C,Kennes C.Autotrophic deodorization of hydrogen sulfide in a biotrickling filter[J].Journal of Chemical Technology Biotechnology,2010,80(9):998-1004.
[7] Kimberley Tang,Vikrama Baskaran,Mehdi Nemati.Bacteria of the sulphur cycle:An overview of microbiology,biokinetics and their role in petroleum and mining industries[J].Biochemical Engineering Journal,2009,44:73-94.
[8] Rattanapan C,Boonsawang P,Kantachote D.Removal of H2S in down-flow GAC biofiltration using sulfide oxidizing bacteria from concentrated latex wastewater[J].Bioresource Technology,2009,100(1):125-130.
[9] 马艳玲.固定化脱氮硫杆菌脱除硫化氢废气的研究[D].西安:西安交通大学,2006.
[10] Ottengraf S P,van den Oever A H.Kinetics of organic compound removal from waste gases with a biological filter[J].Biotechnol Bioeng,1983,25(12):3089-3102.
[11] Wani A H,Lau A K,Branion,R M.Biofiltration control of pulping odors-hydrogen sulfide:performance,macrokinetics and coexistence effects of organo-sulfur species[J].J Chem Technol Biotechnol,1999,74:9-16.