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Emissions from the point on the surface : the cause of pollution affecting both censuses

“two sessions” published on the eve of the national census of pollution. Eleventh National Committee of the CPPCC, the State Council, the first national survey of pollution sources have been obtained leading group office abstracts of the “two sessions” during an interview to the press the results of the census source of pollution in China in-depth analysis and interpretation. The differences reflect the state of data

The source of the census results show that the chemical oxygen demand in wastewater in 2007 was 30,289,600 of tons. “Why statistics chemical oxygen demand that the statistics in 2007 increased by 119%?” In this regard, said Wang Yuqing, the greater the scope of the pollution sources census, more content, the result is more realistic, the differences in data reflect progress.

first census since the extension of the range of statistical sources. In the statistics of recent years, only emissions from industrial point sources of pollution and domestic pollution, but this increased pollution pollution census of agriculture as the source of life statistics of industrial pollution in the third.

second flaw is due to the increase in basic statistics of the population. Statistics from the county level in the past, only now, with some large cities, the statistical framework for establishing the level of the community to increase by at least 70 million people on the statistics. Two reasons for the differences between the two statistics. The survey uses factors latest emission, emissions of pollutants to calculate one of the reasons for differences in data.

reduce pollution from point plan

Wang Yuqing said, according to sources from China pollution identification of five characteristics. A source of pollution

large. Including industrial sources, agricultural sources, source of life and focus on facilities pollution control. Second, pollution and point source is very important. The higher the value of the abatement work on industrial pollution last point source, point source pollution actually practiced in rural areas a greater proportion of total emissions. According to sources in identifying sources of agricultural pollutants greatest impact on water, emissions of chemical oxygen demand 13.2409 million tons, to which the chemical oxygen demand of 43.7% of total emissions. Agricultural sources of nitrogen, phosphorus major source of emissions, emissions of 2,704,600 tons and 284,700 tons to 57.2% and 67.4% of total emissions. Third, the emergence of new structural changes in air pollution. The fourth is the Town Car significant growth in environmental pollution. Fifth, the old problem of pollution is not resolved gradually over pollution problems, haze, persistent organic pollutants, such as eutrophication of lake pollution in recent years tended to new growth.

Wang Yuqing said. “This investigation shows that pollution, pollution from point sources, the source distribution point expands to include not only production, consumption has also been taken into account, only to find census data, pollutants industrial, but first find the pollution and emissions from agriculture sector. “

environmental protection in rural areas should be strengthened” Under pollution sources census ’12 5 ‘to reduce pollution during the shift, who? “he,” Abstracts told reporters. “Pollution of China requires that the properties that we further enhance the reduction a point source of industrial pollution, must as soon as possible reduction of pollution from agriculture on the agenda “

See statistics in agricultural sources of pollution, the most important livestock, aquaculture, pollution and misuse of chemical fertilizers, pesticides cause point sources. the livestock industry, the chemical oxygen demand, total nitrogen and total phosphorus agricultural sources accounted for 96%, 38% and 56%. To be accepted, in principle, the problem of water pollution, agricultural pollution prevention program needs in the protection of the environment.

aggressively promoted the use of livestock and poultry manure, prevention and control of culture. support for aquaculture, the need to control the density and clear limits to ensure safe drinking water. Second, to improve the use of chemical fertilizers and pesticides, prevention and loss control.

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