摘要
为探讨城市污泥高温好氧消化(thermophilic aerobic dingestion,TAD)预处理强化污泥厌氧消化(mesophilic anaerobic digestion,MAD)效果,以及对肠道病原菌肠球菌的削减效果.文中分别考察了3组不同曝气量的高温好氧预处理效果.实验结果发现,TAD-MAD工艺中,累计单位进料的甲烷产气量均高于MAD工艺;在最佳曝气量20L/min,预处理前/后溶解性有机质的增长率为23.19%;后续厌氧消化过程中,预处理组相比于原泥组,产甲烷量增长了28.73%,且3组预处理强化厌氧消化过程中挥发性固体有机物削减率均达到40%以上,高温好氧—中温厌氧消化污泥处理过程中,肠球菌的削减率达到63%,效果显著.
In order to explore the process of thermophilic aerobic dingestion（TAD） pretreatment （TAD） strengthening mesophilic anaerobic digestion（MAD）, and the effect of reducing the intestinal pathogen, we investigate the effect of three different air aerobic pretreatment. The experimental results indicate that the methanegas production of the cumulative unit feed in the process of TAD-MAD is higher than the MAD process. After pretreatment, dissolved organic matter increase 23.19%. In the subsequent anaerobic digestion process, methane production increases by 28.73% and in three groups of pretreatment improved anaerobic digestion process, the volatile organic compounds （VS） reduction rate rises above 40%. And in the process of high temperature aerobic pretreatment strengthening anaerobic medium digestion, the effect is remarkable that enterococcus reduction rate reaches 63%.
作者
房平
唐安平
贺慧妮
FANG Ping;TANG Anping;HE Huini(School of Environmental and Chemical Engineering,Xi′an Polytechnic University,Xi′an 710048,China)
出处
《西安工程大学学报》
CAS
2018年第4期414-419,共6页
Journal of Xi’an Polytechnic University
基金
国家自然科学基金(51578535)
关键词
城市污泥
高温好氧消化
甲烷
中温厌氧消化
肠球菌
曝气量
urban sludge
thermophilic aerobic digestion
methane
mesophilic anaerobic digestion
enterococcus
aeration rate
