subject: Concerned About The Pollution Sources Census Two: Emissions From Point To Surface [print this page] Concerned About The Pollution Sources Census Two: Emissions From Point To Surface
"Two sessions" on the eve of the national pollution census results released. Eleventh CPPCC National Committee, the State Council, the first national survey of pollution sources leading group office Abstracts of the "two sessions" received during a press interview on the China Pollution Source Census results were in-depth analysis and interpretation. Differences reflect the progress of data
The source census results show that the chemical oxygen demand in waste water in 2007 was 30,289,600 tons. "Why are the statistics of the chemical oxygen demand than the statistics in 2007 increased by 119%?" In this regard, Wang Yuqing explained that the broader the scope of the pollution sources census, covering more content, the result is more realistic, the data differences precisely reflect the progress.
First census since the expansion of the statistical range of sources. Over the past only statistics of industrial point source pollution emissions and domestic pollution emissions, but this increase in pollution of agricultural pollution census, also the source of life statistics of industrial pollution in the third.
Second is due to increased population base statistics. Statistics to the county level in the past only now taking into account some of the larger towns, the statistical scope to establishment of the township level, increased by at least 70 million population statistics. Two reasons why differences between the two statistics. The survey uses the latest emission factors to calculate emissions of pollutants, is one of the reasons of data differences.
pollution reduction from point to plane
Wang Yuqing, said, according to sources census, China's pollution has five characteristics. One source of pollution
voluminous. Including industrial sources, agricultural sources, the source of life and focus on pollution control facilities. Second, point source pollution and point source pollution is very prominent. More emphasis on pollution reduction work over the past industrial point source pollution, point source pollution in rural areas actually contaminated a larger share of total emissions. According to census sources, agricultural sources of pollutants greater impact on water environment, the chemical oxygen demand emissions 13.2409 million tons, accounting for the chemical oxygen demand 43.7% of total emissions. Agricultural sources are nitrogen, phosphorus major source of emissions, its emissions were 2,704,600 tons and 284,700 tons, accounting for 57.2% of total emissions and 67.4%. Third, the emergence of new structural changes in pollution. The fourth is the city Car Significant growth in pollution. Fifth, the old problem of pollution has not yet solved, gradually emerging new pollution problems, haze, persistent Organic Pollutants, such as lake eutrophication pollution problems in recent years of new growth trend.
Wang Yuqing said: "This survey shows that pollution, pollution from point sources to the distribution point source extended to include not only production, consumption has also been taken into account. Only to find out the census data, industrial pollutants, but also first find out the pollution of agriculture and tertiary industry emissions. "
Rural Environmental protection Be strengthened "Under the pollution sources census, '12 5' pollution reduction during the change in focus of what will happen?" Abstracts told reporters: "China's pollution characteristics requires us to further strengthen the industrial point source pollution reduction, while must as soon as possible reduction of agricultural pollution on the agenda. "
See from the statistics, in the agricultural sources of pollution, the more prominent is the livestock, aquaculture, pollution and abuse of chemical fertilizers, Pesticide Cause point source pollution. Livestock industry, the chemical oxygen demand, total nitrogen and total phosphorus agricultural sources accounted for 96%, 38% and 56%. To fundamentally solve the problem of water pollution, agricultural pollution prevention must be incorporated into environmental protection agenda.
Vigorously promote the utilization of livestock and poultry manure, pollution prevention and control culture. For aquaculture, the need to control stocking density and clear limits to support areas to ensure drinking water safety. Secondly, to improve the utilization of chemical fertilizers and pesticides, pollution prevention and control loss.
