Printing And Dyeing Industry Urgently Needs To Get Rid Of High Energy Consumption, High Water Consumption And High Pollution. Donghua Students Send Energy Saving And Emission Reduction Technologies.

During the summer vacation, the graduate student team of the school of chemical and biological engineering of Donghua University selected 4 representative printing and dyeing enterprises in Jiangsu, Zhejiang and Shanghai for investigation and study in three places.

Research shows that these enterprises lack special technical support and so on.

"Energy saving and emission reduction is another life line for us."

The enterprises surveyed generally set up such awareness, and achieved initial results in reclaimed water, energy saving and water conservation, and improving the efficiency of raw materials utilization.

If water is saved, the enterprises will reuse the dyeing water and use the steam water in the production workshop which requires higher water quality.

Many enterprises also adopt new environment-friendly low temperature dyestuffs, reduce energy consumption losses, and regularly check the usage of dyes, so that the loss of each dosage is generally not more than 2%.

Energy saving and efficient fabric cryogenic plasma treatment technology, water-saving and energy saving supercritical carbon dioxide dyeing technology, water-saving and environmentally friendly microcapsule dyeing technology, energy saving and emission reduction of low-temperature soaping dye technology, etc., are welcomed by enterprises.

De sang textile printing and dyeing Co., Ltd. is very interested in the "low temperature soaping dye" scheme, and hopes to further cooperate with Donghua University.

In order to save water, printing and dyeing enterprises try to synthesize the process of desizing, scouring, bleaching and dyeing. But in order to achieve this "one bath process", it is necessary to develop an efficient auxiliary agent, which is a difficult problem in front of enterprises. Four.

With the help of their tutors, the graduate students have cooperated with Yiwu Zhong Li industry and Trade Co., Ltd., and now a kind of assistant called "fatty alcohol polyoxyethylene ether" has been synthesized.

Experiments show that the "one bath process" can save water 30%, save energy 20% and save time 1/3.