[Shenzhen] Ports See Higher Particle Concentration

2012-April-24 Source: Szdaily web edition
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EMISSION from ships and vehicles at Shenzhen ports has become a major source of pollution in addition to emission from cars and industrial gas.

The results of recent monitoring showed the concentration of particles at Shekou Port reach 130mgs/cubic meter, much higher than the national average of 75mgs/cubic meter, according to Huang Yuanfeng, chief of the automatic monitoring department of Shenzhen environmental monitoring center.

Huang told residents visiting the center Sunday that 30 percent of sulfur dioxide in the city came from the ports.

"The main causes of emission at ports are container trucks, waste air produced by ships and dust caused by construction work," Huang said.

To relieve the pollution at ports, the city has initiated projects to replace oil with electricity and encourage vessels to use fuel with low sulfur and required vessels to slow down when within a radius of 24 nautical miles from the shore.

This year, Shenzhen will cooperate with Hong Kong and Guangzhou to require ships to use low-sulfur fuel when berthing near the shore area. The trailer trucks and port equipment will be powered by greener sources such as electricity instead of oil.

The average PM2.5 reading in the past 45 days has met the national standard except one day, according to Shenzhen environmental protection agency.

The city’s environmental monitoring center launched PM2.5 monitoring March 8 and the results of 18 monitoring stations showed PM2.5 failed the standard only March 13.

"The concentration of PM2.5 in the west is higher than the city's east because of industrial layout and the PM2.5 reading during rush hours is much higher than during off-peak hours because of the vehicles. The reading in winter is higher than in summer," Huang said.

Shenzhen has started monitoring of PM1, the fine particulate matter with a diameter smaller than 1 microns at 10 monitoring stations.

The result is for research only and won't be released to the public, according to Huang.

Research shows that PM1 is the major factor causing haze and reduced visibility.

Editor: 张莹
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