What are the different types of landfills? Explain them in brief.
Answers
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A landfill site is a site for the disposal of waste materials by burial. It is the oldest form of waste treatment.
Historically, landfills have been the most common method of organized waste disposal and remain so in many places around the world.
Biodegradable wastes or materials are which decompose naturally in the environment. They are safe for the environment. The wastes are made up of natural ingredients. They can be constantly reused. Biodegradable substances persist for small time interval in the environment. Example – waste papers, wood crumbles. They can be managed by these ways:
Municipal solid waste landfills
Landfills that accept household waste as well as other wastes.
Managed landfills Landfills composed mainly of cleanfill, but also construction and demolition waste with light contaminants.
Construction and demolition landfills Landfills where contruction and demolition materials such as wood products, asphalt, plasterboard, insulation and others are disposed to land.
Cleanfills
Landfills where cleanfill material is disposed to land.
Cleanfill material is material that when buried will have no adverse effect on people or the environment.
It includes virgin natural materials such as clay, soil and rock, and other inert materials such as concrete or brick that are free of:
combustible, putrescible, degradable or leachable components
hazardous substances
products or materials derived from hazardous waste treatment, hazardous waste stabilisation or hazardous waste disposal practices
materials that may present a risk to human or animal health such as medical and veterinary waste, asbestos or radioactive substances
liquid waste.
Industrial landfills Landfills that accepts specified industrial wastes. In most cases industrial waste landfills are monofills associated with a specific industry or facility