造纸废水厌氧处理工段沼气回收利用

通过在传统废水处理装置上增加厌氧与沼气处理系统，实现造纸废水沼气的回收利用。采用该技术节能环保效益显著，年节约标准煤4422t，减少二氧化硫排放量3396kg，污泥的减排量为每日；30t，是一个资源节约型、环境友好型项目。

Recycle of methane in anaerobic section of papermaking waste water treatment

The methane recycle from papermaking wastewater was realized by adding the anaerobic biogas and processing system in traditional wastewater treatment system. The practical operation shows that this improved system has the characteristics of energy saving and environmental protection benefits, annual savings of 4422 tons of standard coal, reduction of sulfur dioxide emissions by 3396 kilograms, discharge of sludge reduced by 30 tons per day, which is a resource-saving, environment-friendly project.