This two-tank system produces more methane than conventional methods because different strains of bacteria, which chew up different components of faeces, work better at different temperatures.

• 这种“双槽系统”能比传统方法生产更多甲烷，因为不同的微生物菌株负责吃掉粪便中的不同成分，所以在不同的温度下效率更高。