Hangzhou 2013 Air Quality Survey Report

Third, the overall atmospheric environment

The ambient air quality remains stable, and the main pollutants in the city are inhalable particulate matter, which exhibits smoke and exhaust pollution from hybrid vehicles. Most areas of the city are heavy acid rain areas.

1. Ambient air quality status

In 2006, Hangzhou’s ambient air quality has reached 299 days (excellent), 2 (good) days, and ***299 days compared to the same period last year. , people, account for 81.9% of the total number of days per year. Regarding the impact on air quality, the three indicators of sulfur dioxide and nitrogen dioxide have reached the second-level national air quality standards. The concentration of respirable particulate matter generally shows a downward trend, but it still exceeds two standards and cannot be ignored. The average annual concentration of sulfur dioxide and nitrogen dioxide in the ambient air of the remaining counties (cities) reaches the second-level standard. Lin'an City, Chun'an County, and Fuyang City can reach the second-level standard for the general type of annual average concentration of inhalable particulate matter. The concentration of pollutants increased compared with the same period last year.

2. Acid rain,

Acid rain pollution is more serious, and most areas are in heavy acid rain areas. The precipitation pH ranges from 3.31 to 7.27, the lowest value in Fuyang City. Center City's pH averages 4.39 annually. The frequency of acid rain dropped from the previous year, with Fuyang experiencing the largest decline. The frequency of acid rain in Hangzhou was 79.8%, a decrease of 2.2% from the same period last year.

3. Dust

In recent years, dust concentration in central urban areas, Xiaoshan, and Yuhang districts has fluctuated. In 2006, the amount of dustfall in central urban areas increased slightly compared with the same period last year, while in Xiaoshan District and Yuhang District, it dropped. The annual average dustfalls were 9.43, 8.14 and 6.97 tons/km2 respectively?

4. Emissions of main pollutants in industrial waste gas

In 2006, the main pollutant emitted by the city’s industrial waste gas: sulfur dioxide emissions, decreased by 3.7% compared with the previous year. Emissions of 121,200 tons of smoke and dust were 3.36 million tons, a decrease of 6.1% from the same period last year, and emissions of dust were 47,900 tons, a decrease of 20.9% from the same period last year.

5. Measures and actions

Based on the special rectification work and creation activities as the starting point, we should closely cooperate with relevant departments and take active measures to gradually improve the quality of the atmospheric environment.

First of all, to comprehensively complete the work to comprehensively improve air pollution (Phase IV), 125 units in 87 main cities, 22 units in Xiaoshan District and 16 units in Yuhang District, and the distribution of kilns that have completed the transformation tasks has been banned from burning. The district's special subsidy fund is nearly 5 million yuan, and a comprehensive improvement has been introduced. Hangzhou's air pollution (V) phase work plan will be implemented after approval by the municipal party committee and municipal government.

Control vehicle exhaust pollution. In order to improve the monitoring and control of motor vehicle pollution and strengthen environmental supervision, vehicles that are out of reach are generally at risk of emitting black smoke.

Control dust pollution. The Municipal Environmental Protection Bureau, Municipal Construction Committee, Municipal Urban Management Office, Municipal Urban Management Law Enforcement Bureau and other departments have intensified their efforts to control dust pollution and promote the installation of fully automatic vehicle cleaning facilities at construction sites to work closely together to take comprehensive measures to prevent construction, demolition , dust pollution from various open-air stacks in municipal and other construction sites, urban roads and traffic, and urban areas have initially curbed the rising trend of dust pollution.

Continue to implement the "Hangzhou Service Industry Management Measures" and comprehensively carry out the rectification of oil fume pollution in the food and beverage industry. Catering companies have installed oil fume purifiers and pollution control facilities.

The "smoke control area" and "three edges" of smoke control work will continue to consolidate, expand and develop the air pollution control tasks in the next five years, vigorously promote the application of clean energy and carry out comprehensive desulfurization projects and Standard governance of process emissions. The three counties (cities) of Yuhang, Fuyang, and Tonglu have expanded their smog control areas, and are accepted by the municipal government.