The ambient air quality remains stable, and the characteristics of inhalable particles, the main pollutants in cities, are the smoke and exhaust pollution of hybrid vehicles. Most of the city is a severe acid rain area.
1, ambient air quality status
In 2006, the ambient air quality in Hangzhou reached 2 excellent days, and the excellent days were ***299 days, accounting for 8 1.9% of the total. The impact on air quality, sulfur dioxide and nitrogen dioxide three indicators have reached the national air quality secondary standard. The concentration of inhalable particulate matter generally shows a downward trend, but it still exceeds two standards, which can not be ignored. The average annual concentrations of sulfur dioxide and nitrogen dioxide in ambient air in other counties (cities) reached the second-class standard, and the average annual concentrations of inhalable particulate matter in Lin 'an, Chun 'an and Fuyang, which reached the second-class standard, increased compared with the same period of last year.
2. Acid rain,
Acid rain pollution is more serious, and acid rain is serious in most areas. The range of precipitation pH value is 3.3 1 ~ 7.27, which is the lowest value in Fuyang. The average annual pH value of the central city is 4.39. The frequency of acid rain decreased compared with the previous year, with Fuyang having the largest decline. The frequency of acid rain in Hangzhou is 79.8%, which is 2.2% lower than the same period last year.
3. Dust suppression
In recent years, the dust concentration fluctuated in the central city, Xiaoshan and Yuhang District. In 2006, the amount of dustfall in the central city increased slightly compared with the same period of last year. The average annual dustfall in Xiaoshan District and Yuhang District was 9.43, 8. 14 and 6.97 tons /km2 respectively.
4. Emission of main pollutants in industrial waste gas
In 2006, the emission of sulfur dioxide, the main pollutant of industrial waste gas in the city, decreased by 3.7% compared with the previous year, the emission of smoke and dust was 3.36 million tons, down by 6. 1% compared with the same period of the previous year, and the emission of dust was 47,900 tons, down by 20.9% compared with the same period of the previous year.
5. Measures and actions
As the starting point of special rectification work and creation activities, we will closely cooperate with relevant departments and take active measures to gradually improve the quality of the atmospheric environment.
First of all, the air pollution improvement work (Phase IV) was completed in an all-round way, with 87 main urban areas, 22 Xiaoshan District and Yuhang District 16 sets 125 sets, and the special subsidy funds for kiln distribution no-burning areas were nearly 5 million yuan, and comprehensive improvement was launched. Hangzhou air pollution (five) stage work plan was implemented after being approved by the municipal party committee and municipal government.
Control automobile exhaust pollution. In order to improve the monitoring of motor vehicle pollution and strengthen environmental supervision, inaccessible vehicles generally emit black smoke.
Control dust pollution. In conjunction with the Municipal Environmental Protection Bureau, the Municipal Construction Committee, the Municipal Urban Management Office, the Municipal Urban Management Law Enforcement Bureau and other departments, we will intensify the control of dust pollution, promote the automatic installation of vehicles on the construction site, cooperate closely, and take comprehensive measures to prevent dust pollution from being piled up in the open air on construction, demolition and municipal construction sites, urban roads and traffic, and urban areas, and initially curb the upward trend of dust pollution.
Continue to implement the "Measures for the Administration of Service Industry in Hangzhou" and comprehensively carry out the remediation of oil and gas pollution in the catering industry. Catering enterprises have installed fume purifiers and pollution control facilities.
The "tobacco control area" and the "trilateral" of tobacco control work will continue to consolidate, expand and develop the task of air pollution control in the next five years, vigorously promote the application of clean energy, and carry out comprehensive desulfurization projects and process emission control. Yuhang, Fuyang and Tonglu counties (cities) expanded the tobacco control area, which was accepted by the municipal government.