Analysis of the present situation and causes of air pollution in Shijiazhuang

1.1 The present situation of air pollution in Shijiazhuang

In recent years, with the development of urban industry, air pollution has become increasingly serious and air quality has further deteriorated. This week's air quality test by Hebei Environmental Monitoring Station on April 11 showed that the primary pollutant in Shijiazhuang was inhalable particulate matter (PM11). Because they are small in diameter and mixed with bacteria, they can be inhaled by human body and cause diseases. At the same time, because they are light and not suitable for settlement, they always float in the air, and the sunlight shines on these tiny dust, which is absorbed or scattered, causing the sky to look gray and the visibility to drop obviously. Dust pollution is also serious, especially after the rain, which is more intuitive. The windshield of the car is full of mud, and even the glasses are full of mud. Due to poor garbage disposal in a few areas, piles of garbage rot on the ground, and when it is hammered with the wind, a stench comes to the nose, which makes people feel sick. The waste water and waste gas discharged from factories also affect air pollution to varying degrees, which brings serious inconvenience to citizens' work and life.

1.2 Analysis of the causes of air pollution in Shijiazhuang

1.2.1 Terrain and climate factors are the basic reasons that affect the air quality in Shijiazhuang

Shijiazhuang is located in the south-central part of Hebei Province, with the Taihang Mountains in the west, and the vast North China Plain in the east, south and north. At the same time, Shijiazhuang has a temperate continental monsoon climate with four distinct seasons, which is characterized by cold and little snow in winter, dry and windy in spring, hot and rainy in summer and sunny and cool in autumn. These specific geographical and climatic factors make the air pollution in Shijiazhuang face severe challenges. Due to the southeast wind, the inhalable particulate matter and other pollutants over Shijiazhuang moved westward with the wind, and then turned eastward and returned to the original place after being blocked by Taihang Mountain. Similarly, when the northwest wind blows, due to the huge barrier of Taihang Mountain, the northwest wind is intercepted in Shanxi, and some pollutants can not be blown away, but can only stay over Shijiazhuang.

1.2.2 Urban construction is an important reason that affects the air quality in Shijiazhuang

The government should use economic means to control industrial and mining enterprises. Enterprises are the main producers and emitters of all kinds of pollutants, which requires enterprises to take practical measures to reduce the amount of pollution and realize the unity of economic, social and environmental benefits while pursuing economic benefits. Make enterprises change their ideas, abandon the prejudice of the Ministry of Environmental Protection on economy, and establish the concept that attaching importance to the environment is more beneficial to the economy. Publicize and implement the principle of "polluter pays, use this compensation, developer protection and destroyer recovery". Units that destroy the environment and discharge pollutants at will or exceed the standards prescribed by the state shall be fined or charged with sewage charges according to the type, quantity and degree of pollution; Units that discharge pollutants that damage people's health or cause property losses shall be ordered to compensate the victims; Give tax relief or other economic benefits to products produced by waste; We will implement a system of taxation and fees for the development and utilization of natural resources.

3.2 set strict standards to control dust and waste gas pollution. Close the unqualified sand and gravel yard. For the demolition site of the construction site, the engineering contractor is required to raise the protective screen around the site and cover the temporary traffic roads around it with asphalt; Some non-returning soil should be transported out of the city at any time. The van is required to be covered to prevent building materials from being scattered on the street. Companies should adopt modern electronic filter towers and other advanced equipment to purify the waste gas containing grease ash and harmful sulfur dioxide. Chemical plants should use pipelines to transport waste gas and other odorous gases generated in overproduction to coal stations for combustion, and then turn them into harmless carbonic acid gas and steam, and then discharge them into the air through tall chimneys. Pharmaceutical factories should establish recycling devices for harmful gases, which can be used to make gypsum. Formulate and implement new emission standards for nitrogen oxides and volatile organic compounds and quality appraisal standards for fuels for factories and service industries. In addition, the government should speed up the construction of non-coal-fired areas, and integrate the central area of Shijiazhuang (Heping Road, Sports Street, Huainan Road and Cang 'an Road; Weiming street and area) basically built a coal-free zone, and gradually built the whole urban area into a coal-free zone. At the same time, the government should order that some units with central heating conditions must provide central heating.

3.3 reduce motor vehicle pollution by administrative means. The government should implement strict local rules and regulations, prohibit the sale of cars that fail to meet the national exhaust emission standards, and eliminate cars with excessive exhaust emissions; Installation of EFI and three-way catalytic devices; Accelerate the transformation of motor vehicle fuel,

use clean energy such as natural and electric power; At the same time, pollution-free vehicles such as trams can be set up. For some new buses, it is necessary to purchase clean models with natural gas as fuel and build natural gas filling stations. Tractors, motor tricycles and motorcycles of non-urban brands are prohibited from entering the urban areas.