摘要
以稀释糖蜜为底料,探讨了厌氧接触反应设备用于连续流发酵制氢的可行性,考查了其启动运行特性。以污水好氧生物处理系统的剩余污泥为种泥,反应器在污泥接种量9.3g(MLVSS)/L、进水COD5000mg/L、HRT8h和系统温度(35±1)℃等条件下启动,30d后达到稳定运行状态,乙醇和乙酸之和的质量百分数,占液相末端发酵产物总量的69.8%,呈现典型的乙醇型发酵特征。在稳定运行阶段,系统的pH值、碱度、氧化还原电位分别维持在4.8,460mg/L,-305mV左右,平均产气速率和产氢速率分别达到33.2和13.4L/d。厌氧接触发酵制氢反应设备,呈现出良好的产氢性能和运行稳定性。
Continuous biohydrogen production from diluted molasses in an anaerobic contact reactor with an effective volume of 12 L is investigated in this paper. After being inoculated with 9.3 g（MLVSS）/L excess aerobic activated sludge, the reactor started up at temperature （35±1）℃ with a Hydraulic Retention Time （HRT） of 8 h and a Chemical Oxygen Demand （COD） of 5 000 mg/L in the influent. After 30 days of operation, a steady state was reached in the anaerobic contact bioreactor, with an amount of ethanol and acetic acid counting for 69.8% of the total liquid products, indicating the establishment of typical ethanol-type fermentation. During the steady state, an average hydrogen yield of 13.4 L/d was obtained with an average biogas yield of 33.2 L/d, with the pH, alkalinity, Oxidation-Reduction Potential （ORP） being kept at about 4.8, 460 mg/L and -305 mV, respectively. It is shown that the anaerobic contact bioreactor is practical for hydrogen production by continuous fermentation.
出处
《科技导报》
CAS
CSCD
北大核心
2009年第14期90-93,共4页
Science & Technology Review
基金
中国高技术研究发展计划(863计划)项目(2006AA05Z109)
哈尔滨市科技创新人才研究专项资金项目(2009RFXXS004)
关键词
生物制氢
厌氧接触反应器
发酵
产氢速率
biohydrogen production
anaerobic contact reactor
fermentation
hydrogen yield
