THEORY:
The composition of municipal solid waste is the term that describes the distribution of each component of waste by its percent weight of total. The precious season composition depends upon the locality, season of the year, standards of living and land use etc.
Important constituents of municipal solid waste generated in Nepal are: food waste, paper, plastic, rubber, textile glass, metal etc.
Seasonal variations are of the large type in municipal solid wastes. Many fruits and vegetable waste are all seasonal. The composition of organic waste might be very high in the area where there is local hotels, restaurants, etc.
PROCEDURE:
A waste sample was classified into several categories by manual sorting. Sheets on the floor were prepared and all the sample waste was spread. Proper containers were prepared with a designated name card. Individually, the components were weighed properly.
OBSERVATION:
- Composition of waste by weight:
| S.N. | Components | Wt.of individual | % of components |
| 1 | Organic waste | 1.86 kg | 88. 366% |
| 2 | Paper | 0.031 kg | 1.472% |
| 3 | Plastics | 0.178 kg | 8.45% |
| 4 | Glasses | not found | – |
| 5 | Metal | not found | – |
| 6 | Clothes | 0.0361 kg | 1.709% |
| 7 | Rubber | negligible |
- On the basis of combustibility:
Combustible waste = (0.031+0.178+0.036)kg
= 11.634 %
Non combustible waste = 1.86 = 88.366%
- On the basis of degradability:
Biodegradable waste = 91.457%
Nondegradable waste= 8.45 %
CONCLUSION:
From the above experiment we can conclude that the composition of solid of Kathmandu was determined.