Land - filling sites.

Explanation

Composting is one of the best methods to dispose off degradable waste accumulated in urban areas.
(ii) Large pits are dug in open spaces far away from the residential area.
(iii) Pits are lined with plastic sheet /liner to avoid leaching of toxic and harmful materials which pollute the soil .
(iv) Compressed waste is dumped in the pit.
(v) It is covered with layers of soil , saw dust , leafy waste and specific biochemicals.
(vi) Bioreactors are mixed at some places.
(vii) Microbes present in the soil and other top layers decompose the waste.
(viii) Completely filled pit is sealed with soil slurry.
(ix) Best quality compost is formed after few days. Land filling sites can be reused after removal of compost .