Cri-report Stepping Towards the Low Emission and Pollution of Chinese Papermaking Industry
A number of papermaking enterprises step into the road of low emission and pollution, promoting the further development of energy-saving and emission-reduction of papermaking industry.
(1) According to the statistics of the State Environmental Protection Administration, in 2008, the number of enterprises specializing in pulping and paper making, as well as paper products was 5,759, and the water consumption was 10.896 billion tons. Among it, the fresh water yield was 4.884 billion tons, accounting for 8.89% of the total industrial water consumption with 54.963 billion tons. The reusing water consumption was 6. 012 billion tons and the repeated utilization rate of water was 55.18%.
(2) In 2008, the water discharge volume of papermaking industry was 4.077 billion tons, accounting for 18.76% of the total emission amount of national industrial waste water with 21.738 billion tons; the standard volume of papermaking industrial waste water was 3.751 billion tons, accounting for 92% of the total emission volume of papermaking industrial waste water.
(3) The output of Chinese papermaking industry increased from 30.5 million in 2000 tons to 86.4 million in 2009, and the discharge volume of waste water decreased from 2.03 million tons to 1.29 million tons, with a decrease of nearly 60%. It indicates that in the recent ten years, the scale, equipment levels, raw material structures, emission standards of papermaking enterprises all dramatically improve.
Methods of Energy-saving and Emission-reduction
Firstly, fastening forest planting and developing papermaking with the low carbon
Forest planting, as a basic national policy, it can absorb CO2 in the atmosphere in large numbers and release the oxygen, playing an important role in decreasing the density of greenhouse gases in the atmosphere and easing the phenomenon of global warming. In addition, forest planting can maintain water and soil, and prevent water and soil erosion as well as the land desertification, so forests are known as "green reservoirs". Moreover, forest planting can check wind and control sand, radically getting rid of the disaster of wind and sand. For papermaking industry, the manual fast-growing trees are the preferable fibrous materials of papermaking. However, it should be noticed that paper enterprises cannot extract woods only but neglect forest planting, or it will damage the ecological environment and the wind cannot be supplied in the long term. China should learn the experience of forestry-paper integration of Brazil and Finland, as well as combine the concrete condition in China to development Chinese low-carbon papermaking industry.
Secondly, adjusting the structure of raw materials and reducing the emission of "three wastes"
The rapid increase of the dosage of wood pulps and waste paper has a passive effect on energy-saving and emission-reduction. In 2009, the dosage of wood pulps and waste paper accounted for 85% of the total consumption (including 23% of wood pulps, 62% of waste paper pulps, and 15% of non-wood pulps). Moreover, closing a large number of straw pulps with heavy pollution and high energy consumption and building and expanding large-scale pulp and paper factories with the wind pulp and waste paper as the raw materials, and the technical equipment of the production line in these enterprises are close or comparable to the international advanced level. Furthermore, the reusing of waste paper should be expanded. The total usage amount of waste water in 2009 reached 61.7375 million tons, which drastically reduced the usage amount of woods and bamboos and the consumption of the energy, water resource and industrial chemicals. In addition, in 2009, China imported 13.67 million tons of wood pulps and 27.5 million tons of waste water (the major component of imported paper is the wood fiber), at the same time, imported more than 1 million tons of wood chips from the United States, Australia, Indonesia, Russia, Vietnam, Malaysia and other countries for the production of wood pulps.
Thirdly, adopting the advanced technologies of overseas and improving the level of energy-saving and emission-reduction
In recent years, China imports many new technologies and devices, including pulping, papermaking, soda recovery, waste processing and automatic controlling equipment, spurring the development of Chinese papermaking industry, energy-saving and emission-reduction, and papermaking with the low carbon.
Fourthly: implementing the new standard of the emission of water pollutants
The new Emission Standards of Water Pollutants of Pulping and Papermaking Industry was implemented since Aug. 1, 2008. The implementation and promulgation of the new standard brings certain pressure to the environmental protection of papermaking industry.
Related research: http://www.cri-report.com/252-research-report-on-china-s-papermaking-industry-2011-2012.html
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