Monday, April 23, 2007

Waste Disposal

More than half the world's population now live in cities. Waste handling and disposal are major emerging issues as the world's cities get larger. How is your city dealing with all that waste?

Hong Kong has seen its wasteloads grow as its economy has grown. Municipal wasteloads have increased an average of about three per cent per year since 1986. At the same time, the population has grown by more than one million people and each person is throwing away more waste. The per capita level of domestic waste has risen from 0.95 kilogrammes per person per day in 1990, to 1.11 kilogrammes in 2002.

Municipal solid waste includes waste from households, industry and commercial operations, but landfills are also under tremendous pressure from construction waste. About 38 per cent of waste dumped in landfills comes from this sector. This figure fluctuates depending on how many reclamation sites can take the waste for fill, the willingness of industry to separate waste on site and the number of construction projects underway.

Per Capita Disposal Rates of Municipal Solid Waste and Domestic Waste in 1991-2005





Quantities of Major Types of Solid Waste Disposed of in 1991-2005



Types of Solid Waste Disposed of at Landfills in 2005



Through the existing waste recovery system, about 2.59 million tonnes of municipal solid waste were recovered in Hong Kong in 2005. Of that total, 6% was recycled locally and 94% was exported to the Mainland and other countries for recycling, with an export earning of HK$4.5 billion for Hong Kong.

Major Materials Recovered / Recycled in 2005



Source : http://www.epd.gov.hk/>

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