Polyester is the most important raw material for textile industry and engineering plastics industry, and also one of the important materials for light industry, household appliances, automobile and earth construction.However, if 1t polyester is produced every year, the waste water generated directly reaches 0.187t only in the esterification stage.These esterified wastewater contain major organics such as acetaldehyde, glycol, 2-methyl-1, and 3 dioxycyclopentane.Although the total organic matter content only accounts for 1% to 2% of the waste water, it seems to be very small. However, when these organic matters enter the water body, they will pollute the water source.Enter air, can produce the peculiar smell such as malodor, cause pollution to the environment.
On the other hand, these pollutants, if recycled, are high value-added resources, containing "real gold and silver".For example, industrial acetaldehyde and glycol are raw materials and intermediates for the synthesis of a variety of organic chemical products, as well as intermediates for leather manufacturing and pharmaceuticals.Acetaldehyde and glycol are not only in great demand, but also in high price.
Adopting new technologies and technologies to recycle and utilize waste organics not only turns waste into treasure, but also effectively reduces source pollution, providing employees with a safer, environmental-friendly and healthy working environment.
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