Takeshi Fujisawa*
* Section manager, Industrial Waste Section, Public Cleaning Department,
Environmental Bureau, Sapporo City Government
(Nishi 2cho-me, Kita 1jo, Chuo-ku, Sapporo city, 060-8611 Japan)

Abstract
Sapporo city government specified garbage, which occupied about 40% of municipal wastes discharged from business activities in Sapporo, and started selecting substances to control compost moisture content levels. The volume of discharged garbage and stability of demand for the products were surveyed with the object of introducing a composting system.
During the survey period, a project to manufacture garbage into fodder with a new recycling system, referred to as a "Frying system" which has been developed by a private enterprise was found to be feasible.
For this system, a new dehydration technology has been adopted. Food waste is heated to 100-110*C[Celsius degeree] in edible oil from the waste under reduced air-pressure in order to evaporate contained water so that fodder with high nutritive value could be produced.
Then Sapporo city government decided to provide positive support of the private project by means such as providing a plant site, cooperating on collection and transportation of garbage, and afterwards licensed the enterprise to treat garbage.
As a result, the recycling project started in January, 1998 with an initial plant capacity of 35 tons/day. The capacity was later expanded to 50 tons/day, and the plant is running well at present.
The Ministry of Agriculture, Forestry and Fisheries also gave recognition for the content of the products. Demand for garbage as fodder material is anticipated to be more stable in the future.
It is my great pleasure if this report would be any help to development of the recycling system for food resource circulation.

Key words: dehydration system by frying in oil under reduced air-pressure, Sapporo recycling complex, system for collection and transportation, impurities