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Work starts on garbage solution

THE installation of a computer-controlled system to deal with rubbish at the Shanghai Expo site began yesterday.

Huge exhaust shafts and tubes under the Expo site will link to 64 rubbish bins in the 0.5-square-kilometer core area of the site, said Yuan Shumin, an official with the Shanghai Environment Industry Co. The company was authorized by the government to be the sanitary service provider for the Expo.

The new system's exhaust shafts create negative pressure to send trash to a rubbish station via tubes. When waste thrown into collection units reaches a fixed quantity, the system is automatically activated.

The garbage is then compressed and transported to collection boxes for recycling. The system is completely automatic and just three operators are needed to oversee the system.

Using closed tubing and instant compression means less smell is released into the air, said Yuan, chief operating officer of the company's Expo branch.

Each dustbin has two openings, one for recyclable rubbish and one for everything else.

Installation should be completed in September when a three-month trial will begin.

The system, the largest in China, is costing 60 million yuan (US$8.76 million) to set up and it can handle about 60 tons of rubbish every day.

About 160 tons of garbage will be produced daily inside the World Expo zones on both sides of the Huangpu River, the company estimates.

In other Expo areas, waste will be collected in the traditional way. The company has invested 1 billion yuan developing waste transport containers and a transport network using inland rivers.

"The containers can each hold 25 to 30 tons of garbage, while a garbage truck can only take 3 to 8 tons," Yuan said.


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