餐厨垃圾两相与单相厌氧消化过程参数分析  

Process parameter analysis of anaerobic digestion from food waste by two-phase and single-phase

作　　者：王颢[1] 赵明星[1] 阮文权[1] 

机构地区：[1]江南大学环境与土木工程学院,无锡214122

出　　处：《环境工程学报》2016年第2期873-879,共7页Chinese Journal of Environmental Engineering

基　　金："十二五"国家科技支撑计划项目(2012BAC18B01-2);江苏省自然科学基金资助项目(BK20130126);江苏省科技支撑计划项目(BE2012615)

摘　　要：在(55±0.2)℃温度下,以餐厨垃圾为原料,分别进行两相与单相厌氧消化实验,两相实验设置不同初始p H的反应组,比较两相与单相厌氧消化的产气效率、有机酸、营养物质和酶活性等的变化。结果表明,餐厨垃圾两相厌氧消化可以提高产甲烷效率,初始p H 8.5餐厨垃圾组的甲烷产量最高为178.3 m L/g COD,比单相厌氧消化提高了338%;另外,两相厌氧消化中氢气最高可达14.12 m L/g TS。餐厨垃圾两相厌氧消化产酸相的初始p H会影响产氢和产甲烷的效率,氢气和甲烷的产量随初始p H的升高而呈增加趋势。淀粉酶活性在两相实验组的产酸相及单相实验组均呈现先升后降的变化,最高活性分别为0.542 mg/(m L·min)和0.298 mg/(m L·min);蛋白酶活性在产酸相达到最高,为1.70μg/(m L·min);脱氢酶活性在初始p H为9.0的实验组达到最高,为145μg/(m L·h),分别是空白和单相实验组的113.3%和120.8%。Two-phase and single-phase anaerobic digestion of food waste were indicated under（ 55 ± 0. 2）℃,the initial p H was set different during the two-phase anaerobic digestion process,and comparative research of biogas generation,organic acids,nutrients and enzyme activity was carried out. The results showed that twophase anaerobic digestion of food waste was more effective in methane yield than single-phase,the highest methane yield reached 178. 3 m L / g COD in the initial p H of 8. 5 group,which was 338% higher than in the singlephase; moreover,hydrogen was available in two-phase anaerobic digestion,and the highest hydrogen yield reached 14. 12 m L / g TS. The initial p H of two-phase anaerobic digestion could influence both hydrogen and methane generation efficiency,the hydrogen and methane yield increased with the increase of initial p H. The amylase activity showed a trend of first increasing then decreasing in both the acidogenic phase and single-phase methane generation group,its highest values reached 0. 542 mg /（ m L· min） and 0. 298 mg /（ m L· min）,respectively. The protease activity also showed a trend of first increasing then decreasing in the acidogenic phase,the highest values of activity reached 1. 70 μg /（ m L· min）. The dehydrogenase activity in the initial p H of 9. 0group reached the highest value of 145 μg /（ m L·h）,which were 113. 3% and 120. 8% of the control group and single-phase group,respectively.

关 键 词：餐厨垃圾 两相厌氧消化 淀粉酶 蛋白酶 脱氢酶 

分 类 号：X705[环境科学与工程—环境工程]