Waste water engineering

Solid waste management

🔸 Methods of disposal of solid waste

1. Land filling

👉 A minimum clearance distance is 6m from the surrounding area should be left during filling operation of flow laying areas.

👉 Biodegradable solid waste is disposed by this method

👉 Methods of land filling

1. Area filling

2. Trench filling

3. Depression filling

2. composting

👉 It is biological method of decomposting solid waste.

🔸 Method of composting

👉 Indore method of composting :- Anaerobic process

👉 Bangalore method of composting :- Aerobic process

3. Incineration

👉 Combustible solid waste disposed by this method.

👉 Burning in the presence of air

4. Pyrolysis

👉 Burning in absence of air

👉 Plastic & rubber waste disposed by this method

5. Pulverization

👉 Non biodegradable and non combustible solid waste disposed by this method

👉 Cutting or shredding into small pieces.

6. Sea disposal

👉 Barged into sea & disposed into deep sea water

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