摘要
以常州市餐厨垃圾为研究对象,采用淋滤-UASB工艺,通过现场试验研究了该工艺处理餐厨垃圾过程中厌氧工艺参数(如COD、p H值、VFA等)的变化及产气效能。结果表明:厌氧反应体系p H维持在7.6左右;COD从开始的20 000-140 000mg/L到最终UASB出水7 000-10 000mg/L范围内;VFA随着天数的增加日益降低至120mg/L。UASB运行稳定后,每吨餐厨垃圾可以产生沼气80~110m^3,甲烷含量为70%~80%,产沼系数为0.3~0.44m^3/kg COD。可见餐厨垃圾厌氧沼气发酵工程是可行的,且具有较好经济效益和社会效益。
A dewatering leaching - UASB reactor was made to dispose the kitchen waste. The treatment effectiveness of the dewatering leaching -UASB process was studied on site in pilot scale. The result showed that the pH value maintained at7.6. At first the value of COD ranged from 20000 mg/L to 140000 mg/L to the final UASB water 10000mg/L to 12000 mg/L. Volatile fatty acid（VFA） reduced to 150mg/L with the increase of the days. After the system operated stability, about 80 - 110m^3 methane of the content of 70 - 79% can be collected from kitchen waste per ton. These results provide a proof of the feasibility for kitchen waste anaerobic methane fermentation, and the disposing of the kitchen waste would be benefited in social, economy and environment.
出处
《江苏理工学院学报》
2015年第6期50-54,60,共6页
Journal of Jiangsu University of Technology
基金
江苏省省级环境保护科研项目(2013029)
江苏理工学院青年科研基金项目(KYY13023)
江苏省大学生实践创新训练项目
江苏省大学生创新创业项目
关键词
餐厨垃圾
脱水淋滤
UASB
厌氧
中试
kitchen waste
dewatering leaching
UASB
anaerobic digestion
pilot test
