Question

How are wastes decomposed?

Answer 1

Decomposition of waste

1. Wastes are categorized into two types- biodegradable and non-biodegradable.
2. Depending on the type of waste, there are different methods of decomposition as follows:

1. Landfill- The waste is spread as a thin layer in low-lying areas and a layer of soil is added on the top and the waste is allowed to decompose.
2. Incineration- It is the process of controlled combustion of garbage and the heat generated in this process is used to produce electricity.
3. Waste Compaction- The waste is compacted into blocks and then sent for recycling.
4. Biogas Generation- Biodegradable waste is converted to biogas and residual manure by degradation with microorganisms.
5. Composting- Organic wastes are buried under the soil and allowed to decay with microorganisms to enrich the soil with the compost formed.
6. Vermicomposting- It is the process of using worms for degrading organic matter into nutrient-rich manure.