生活垃圾资源化有机浆液的厌氧消化调试研究

Study on the Anaerobic Debugging of Organic Slurry in Municipal Solid Waste Treatment and Recycling Utilization

以城市生活垃圾经过破碎、淋滤等预处理后的有机浆液为研究对象．进行了中试规模的厌氧反应器的调试研究，研究的结果表明：①采用污水处理厂的污泥．生活垃圾经过预处理后的有机浆液历时120d的完成了厌氧调试；②根据调试过程分为3个阶段：污泥驯化阶段、负荷提高阶段、稳定运行阶段。在污泥驯化期，OLR=0．5kg／（m3·d）-v。COD去除率经历缓慢增长、快速增长2个时段。在负荷提高阶段，COD去除率基本保持85％左右。稳定运行期0lR=7．0kg／（m3·d）下，COD去除率保持在80％左右；③沼气的产气率保持在O．45～O．55m3／kg，CH4和c02的百分比分别保持在55％和40％左右．

Anaerobic debugging experimentation was done in a pilot plan, using the organic slurry that comes from the process of crush and percolation in the pretreatment of municipal solid waste （MSW）. The results indicated： （）Inoeulated with the sludge of sewage treatment plant,the anaerobic debugging of the organic slurry from the pretreatment of MSW was completed in 120 days; （）The anaerobic debugging consisted of three stages： the cuhivation stage, the improving loading stage and the stable stage. In the cultivation stage, when OLR was 0.5 kg/（m3-d）, the increasing rate of the COD removal varied form low rate to high rate. In the improving loading stage, the COD removal rate was maintained in 85%. In stable stage, when OLR was 7.0 kg/（m3-d）, the COD removal rate was about 80%; ）The biogas production rate was 0.45 0.55 m3/kg, the percentage of methane and carbon dioxide was maintained at about 55% and 40%, respectively.