进水COD浓度变化对内循环厌氧反应器(IC)发酵制氢系统的影响  

Effect of influent COD concentration on performance of bio-hydrogen production in the internal circulation reactor

作　　者：丁睿[1] 殷天名 李巧燕[2] 雷瑞盈 王安娜[1] 王佳瑜[1] 李永峰[1] 

机构地区：[1]东北林业大学林学院,哈尔滨150040 [2]东北林业大学生态研究中心,哈尔滨150040

出　　处：《环境化学》2016年第6期1305-1310,共6页Environmental Chemistry

基　　金：黑龙江省自然科学基金(E201354);中央高校基本科研业务费专项资金项目(2572015AA17)资助~~

摘　　要：利用糖蜜废水为发酵底物,以内循环厌氧反应器(IC)作为反应装置,探讨进水COD浓度变化对厌氧产氢效能的影响.结果表明,在水力停留时间(HRT)为6.5 h,温度为(35±1)℃时,IC反应器进水COD浓度在2—10 g·L^(-1)范围内变化,系统产氢效能随着进水浓度提高而上升,并在进水COD浓度为6 g·L^(-1)时,达到最大产气量23 L·d^(-1)和产氢量10.9 L·d^(-1).但是当进水COD浓度上升到8—10 g·L^(-1)后,产气量和产氢量明显下降,说明活性污泥可能受到了高浓度底物的抑制.发酵气体中H2含量并未随着进水COD浓度的变化而产生非常明显的变化,说明本实验中的IC反应器是一个较为稳定的产氢系统.An internal circulation reactor（ IC） using molasses as fermentation substrates was employed to explore anaerobic hydrogen production efficiency at different COD concentration. The results showed that in the COD concentration range of 2—10 g·L^（-1）,the hydrogen production rate increased with COD concentration with HRT 6.5 h and temperature（ 35±1） ℃. And when the COD concentration was 6 g·L^（-1）,the biogas and hydrogen production yield reached a maximum of23 L·d^（-1）and 10.9 L·d^（-1）. But the biomass content and hydrogen production yield declined as the COD concentration increased to 8—10 g·L^（-1）. The results showed that activated sludge might be affected under high substrate concentrations,The H2 content in fermentation gas did not change significantly with the variation of COD concentrations,indicating that the IC reactor was a relatively stable hydrogen production system.

关 键 词：IC反应器 厌氧发酵 生物制氢 进水COD浓度 

分 类 号：X703[环境科学与工程—环境工程]