Development and Reform Commission: Significant Achievements in Energy Saving and Emission Reduction in the Textile Industry

During the “Eleventh Five-Year Plan” period, the textile industry took accelerating scientific and technological progress as an important support for promoting industrial restructuring and upgrading. A series of new energy-saving emission reduction technologies achieved R&D breakthroughs, and were promoted and applied in the industry, achieving significant results. According to the data, during the "Eleventh Five-Year Plan" period, according to comparable prices, the comprehensive energy consumption of the value-added of textile industry units has decreased by about 40%, and the cumulative reduction in sewage discharge volume has exceeded 40%.

The improvement of green equipment research and development and manufacturing capabilities has created a good foundation for the textile industry to achieve energy conservation and consumption reduction. The development and promotion of energy-saving motors in the cotton spinning industry has further reduced the energy consumption per ton of yarn. The application of air-conditioning automatic control technology can reduce the air-conditioning energy consumption by 10-15%. The chemical fiber industry promotes practical and energy-saving processing technologies such as differentiated direct spinning, in which the application of the new melt direct spinning heating medium heating system reduces fuel consumption by nearly one-third. The printing and dyeing industry's high-efficiency short-flow pretreatment technology has been applied to the dyeing of various types of fabrics and can reduce the consumption of electricity, steam and water by more than 30%. Cold pad batch dyeing has been applied to medium-thickness fabrics, saving steam by 40%.

The textile industry has made progress in water conservation. During the “11th Five-Year Plan” period, the water consumption of 100m printing and dyeing cloth in the printing and dyeing industry with the largest amount of water consumption fell from 4 tons to 2.5 tons, a cumulative reduction of 37.5%, and the reuse rate of printing and dyeing cloth production water increased from 7% to 15%. 8 percentage points. The promotion and application of high-efficiency short-flow pretreatment and continuous dyeing equipment, new batch-type dyeing machines, cold-rolled heap dyeing, and biological enzyme desizing and other advanced equipment and techniques can achieve water conservation of more than 20%.

Pollutant emission reduction and treatment achieved results. The printing and dyeing industry has developed new technologies for the deep processing and reuse of waste water quality and diversion, achieving stable wastewater treatment standards, and drastically reducing sewage discharge. The deep purification and recycling technology of cocoon silk production wastewater researched and developed by the silk industry has been promoted and applied in large and medium-sized reeling silk enterprises, enabling the recycling rate of reeling wastewater to reach over 90%, and basically achieving zero discharge of wastewater. The chemical fiber industry adopts membrane filtration, activated carbon adsorption, and exhaust gas system technology to treat viscose waste water and waste gas, effectively reducing pollutant emissions and improving the industry's clean production level.

The recycling of resources continues to increase. At present, the domestic renewable fiber production capacity reaches 7 million tons and the output reaches 4 million tons. Recycled and recycled polyester fiber recycling technology has been widely promoted, and technology has been continuously upgraded; regenerative spinning technology has not only developed three-dimensional hollow fiber used for home textile filler, but also realized in long and short differential fiber, medium strength industrial wire, etc. Breakthroughs are being promoted and applied. The ability of the textile industry to use natural fast-growing forest materials for the development of textile fiber materials has continued to increase, and the development of bamboo pulp fibers and hemp pulp fibers has been industrialized. New technologies such as the reuse of condensate and cooling water, waste heat recovery from waste water, reuse of reclaimed water, and recovery from mercerized light alkali have been widely used in the industry, greatly increasing the efficiency of the use of resources such as water and heat.