With the deepening of reform and opening up, China's economy entered a period of rapid development, textile printing and dyeing industry, substantial increase in displacement. Water treatment equipment is evolving, according to incomplete statistics, China's current annual emissions of about 2 billion tons of printing and dyeing wastewater, located in the country's industrial wastewater discharge amount of 5th place. Resulting in huge economic losses and environmental damage. Textile dyeing and printing for small and medium private enterprises in China, the fragmented waste water emissions is not easy to concentrate, and the overall level is not high, almost 1 time times more emissions per unit of product than in developed countries. SMEs due to the small scale of production, greatly influenced by the market, dye House for batch production, changes in production or orders small and fast, wide fluctuations of water quality, sewage treatment systems cannot be stable and effective operation. Due to the small and medium enterprises to bear the sewage treatment system construction and operation costs, and most of its waste water is not effective governance, thus causing serious environmental pollution.
Due to the limits of existing technology and reuse of printing and dyeing wastewater by a large number of production and wastewater treatment system will bring about a series of problems, including the accumulation of organic pollutants and inorganic salts. Currently the long-term wastewater reuse water quality problems and its effect on water treatment systems not much research, especially the problem of the accumulation of inorganic salts not covered by Basic.
Poor biodegradability of wastewater, decolorization of difficulties the decolorization of printing and dyeing wastewater is wastewater treatment method for evaluating the validity of one of the key indicators. Common of processing way is flocculation gel again flocculation gel, biochemical regeneration of of negative processing method, engineering accounted for to area big, and process long, and infrastructure and run costs high, and processing effect not stable, due to currently of dyeing media to water mainly, so most dye are easy dissolved Yu water, and due to dye molecular quality larger, most dye in water in the are can formed hydrophilic colloidal, makes dyeing wastewater of General bleaching became very difficult, so, Needed to adopt more effective methods for decolorization of and removal of printing and dyeing wastewater treatment technology of refractory organic matter.
Textile printing and dyeing industry wastewater treatment and utilization of industrial technology innovation strategic alliance is a project by the State-run organization to carry out the first batch of water pollution control and treatment one of the major science and technology industrial technology innovation strategic alliance pilot. This Union based Yu development cycle economic, construction resources saving, and environment friendly type and ecological civilization social construction of strategy target, through open industry technology innovation strategy Union, common is committed to solution textile dyeing industry wastewater processing and resources of key technology development and industrialization problem, gradually established high, and open shared of experiment platform and industrial test base, common solution textile dyeing industry development in the technology bottleneck, improve textile dyeing industrial park water resources cycle using back with rate, Reduce dyeing industry agglomeration to environment pressure; established Union technology transfer and diffusion mechanism, speed up application a both can pull domestic demand, and and can formed new of economic growth of independent innovation textile dyeing industry wastewater processing and resources of key technology and products, achieved technology results industrialization, and commercial and scale of fast application, speed up textile dyeing industry wastewater processing and resources of industry technology upgrade, promote textile dyeing industry health development.