摘要
为了提高剩余污泥厌氧消化的转化效率,文章探讨碱/超声联合预处理和菌种驯化对污泥厌氧连续消化的影响。实验结果表明:碱/超声联合预处理可以提高污泥的可生化性,污泥的SCOD增加了9742.9 mg·L^(-1),在后续的厌氧消化中甲烷产量提高20%;与原始菌种相比,驯化菌种可提高产甲烷量6%;污泥连续厌氧消化的最适有机负荷可达到2.3 kg VS·m^(-3)d^(-1),水力停留时间缩短为20 d。
In order to improve the anaerobic digestion efficiency of sludge, the effect of alkaline and ultrasonic pretreatment and inoculums domesticating on continuous anaerobic digestion of waste activated sludge were studied in this paper. It is demonstrated that the optimum organic load of sludge anaerobic digestion was 2.3 kgVS · m^-3d^- 1, and that of hydraulic retention time was 20 d. Alkaline and ultrasonic pretreatment could improve the biodegradability of the sludge, increasing the SCOD of the sludge by 9742.9 mg · L^-1 and the yield of methane by 20%. The domesticated strain could increase the amount of methane production by 6% comparing with the original strain.
出处
《中国沼气》
北大核心
2016年第5期12-16,共5页
China Biogas
基金
公益性行业(农业)科研专项经费(201303101-2A)
关键词
污泥
碱/超声联合预处理
菌种驯化
连续厌氧消化
sewage sludge
alkaline pretreatment
ultrasonic pretreatment
inoeulums domesticating
continuous anaerobic digestion
