The City of Geneva, population 159,000 is the administrative center of the Canton of Geneva, population 340,000. The Canton owns a number of facilities for the treatment of waste. Geneva's chief waste treatment facility is the Cheneviers Incinerator. Two Von Roll integrated boiler incinerator furnaces have a rated capacity of 200 metric tons (220 short tons) per day each. Superheated steam at 360/sup 0/C and 32.4 bars (32 atm) powers a 6200 kW turbo-generator unit. The electricity is sold to the cantonal grid. Total incinerable waste in the Canton of Geneva has varied from 120,000 to 130,000 metric tons (132,000 to 144,000 short tons) annually during the last five years. For the last two years, total per capita tonnage have been declining. Per capita incinerable waste was 363 kilograms (800 lbs) in the year 1975, of which 257 kilograms (606 lbs) were household waste. Eighty-seven thousand, five hundred metric tons (96,386 short tons) of this waste was burned in the Cheneviers Incinerator in 1975. The remainder was landfilled, due to the lack of capacity at the incinerators. The system which began operating in 1966, cost approximately 40 million Swiss Francs ($9.3 million; 1965 or $23 million; 1976). Three-quarters of this sum was for land, buildings, construction, and equipment. A large station and dock for the transfer of waste accounted for the remainder. The Von Roll design ofthis plant is now out of date. Extensive modifications were made to correct corrosion problems in the furnace.
