Sanitary
Landfills - The material is placed in a landfill to allow it to decompose. Both, organic and inorganic solid wastes are deposited together in a low lying land. To avoid, foul odour and attraction of insects and rodents, each day's waste deposit is covered over with a layer of soil, creating a sanitary landfill.
A developed landfill can be used for construction and recreation purposes. For 30-50 years, the organic matter undergoes slow, anaerobic microbial decomposition and the products which result include CO2, H2O, CH4, low mol. wt. alcohols, and acids which diffuse in the surrounding air and water. Thus landfill settles down.
