(1) What environmental problems will be caused by the traditional disposal methods of municipal waste at present?

(1) At present, the traditional disposal method of urban garbage is to transport the garbage outside the city for stacking, landfill or incineration. Stacking will occupy a lot of land, landfill will pollute groundwater and soil, and combustion will produce a lot of harmful gases and pollute the air.

(2) Compared with the traditional way, Class B garbage disposal method: recycling garbage by classification, such as using garbage as building materials and fertilizers; Reduce waste, such as recycling all kinds of waste; Harmless waste, such as recycling waste food and waste plastics, reduces environmental pollution to soil and atmosphere.