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污染控制技术及原理

李永峰,王璐,李建政,刘晓烨,杨传平,任南琪.利用Ethanoligenens harbinense R3连续培养的CSTR的启动与运行[J].环境科学学报,2009,29(8):1624-1628

Start-up and continuous operation of continuous stirred-tank reactors(CSTR) using Ethanoligenens harbinense R3

李永峰
1. 东北林业大学林学院, 哈尔滨 150040; 2. 上海工程技术大学化工学院, 上海 201620; 3. 哈尔滨工业大学市政环境工程学院, 哈尔滨 150090

摘要：采用连续流搅拌槽式反应器(CSTR)为实验装置,探讨了利用新型发酵产氢菌R3的生物制氢反应器的启动与运行情况.实验表明,维持反应器内pH在4.5左右、COD启动值为6000mg·L^-1、水力停留时间为8h等条件,可在30d内完成反应器内菌种对环境的适应并进入稳定运行阶段,此时系统氧化还原电位(HRT)稳定在-400mV左右.系统内的液相末端发酵产物中乙醇含量最大,占发酵产物总含量的65%,乙醇和乙酸所占比例为95%,系统呈现明显的乙醇型发酵特性.启动和运行阶段的积累产氢量为399.3

Abstract：Continuous stirred-tank reactors (CSTR) for bio-hydrogen production were studied using Ethanoligenens harbinense R3,a new anaerobic hydrogen-producing bacterium. The study aimed to assess the start-up and continuous operation characteristics for bio-hydrogen production of the CSTR. At a pH of about 4.5,COD concentration of 6000 mg·L^-1,and a hydraulic retention time (HRT) of 8 h,a hydrogen-producing microbial community could adapt to the environment and operate stably. At the same time,the reduction potential of the bio-hydrogen reactor system remained steady at about -400 mV. The concentration of ethanol could reach 65% of the aqueous terminal production in the system. The total hydrogen production was 399.33 L,and the highest hydrogen production was 15768.8 mL·d^-1 during the stage of the start-up and operation. Organic compounds containing nitrogen could be digested well by the microbes,while inorganic nitrogen had no obvious effects on hydrogen production and bacterium growth. When organic compounds containing nitrogen and phosphorus were added to the culture medium,the total biogas production,the accumulated hydrogen production and total ethanol concentration of the end liquid products were higher than in the control group.