The amount of generation of main organic wastes
| Organic wastes |
Kinds of organic wastes |
Amount |
Year |
| Agriculture |
Rice straw |
Nil |
|
| Wheat straw |
unknown |
|
| Chaff |
unknown |
|
| Vinyard waste |
unknown |
|
| Subtotal |
7,144 |
|
| Stock farming |
Animal manure |
200 million tonnes |
2003 |
| Stock residue |
unknown |
|
| Subtotal |
200 million tonnes |
|
| Forestry |
Bark |
125,000 tonnes |
2002 |
| Sawdust |
2 million tonnes |
|
| Chip of wood |
included with sawdust |
|
| Subtotal |
2.1 million tonnes |
2002 |
| Food processing |
Animals and plants residue |
unknown |
|
| Sludge |
unknown |
|
| Subtotal |
|
|
| Construction |
Construction wood |
220,000 tonnes |
2002 |
| Garbage |
House hold and office |
416,000 tonnes |
|
| Grass and wood |
Wood |
included in construction wood |
|
| Sludges |
Sewage sludge |
292,000 tonnes |
|
| Nightsoil |
none collected |
|
| Johkaso sludge |
|
|
| Rural community sludge |
none collected |
|
| Subtotal |
|
|
| Total |
|
292,000 tonnes |
|
参 照 ●http://www.crop.cri.nz/psp/broadshe/compost.htm
