Hebei Dongming Tanning Enterprises Escape The Fate Of Being Eliminated By Technological Innovation

September 23rd, 2010.

"The 18 drums will be upgraded and pformed into new ones.

It is understood that in the past, during the preparation of cowhide tanning, the hairs were burned and discharged along with the waste water, which is an important factor in the high concentration of chemical oxygen demand.

Now we use the wool protection method to completely filter out the cow's hair and turn it into a raw material for producing organic nitrogen fertilizer and nitrogen acid.

In the past, the chrome produced from tanning process is a serious source of pollution. How to manage it is a big problem.

Now the new technology is used, which is the new technology of overloading, drum drying, hair removal, hair removal, lime and chrome tanning wastewater recycling, energy saving and environmental protection. All problems can be solved.

"The leach wastewater and chrome tanning waste liquid produced in the tanning workshop are collected through special pipes for solid-liquid separation, sedimentation treatment and laboratory test.

This is the source of our company's control of tannery sewage discharge technology. "

Xie Shenghu, general manager of Dongming company.

As early as 2006, the Dongming company hired Shaanxi University of Science and Technology professor and famous leather expert Wei Shilin and Liu Zhenhua to take the lead in technical research, and invested a total of 2 million yuan in research and development funds. On the basis of digestion and absorption of tannery cleaner technology and waste water treatment technology, it innovated 135 technical problems, such as chemical material screening and its application methods, operation of overloading drum, recycling and treatment of waste water, and formed a system integration of overloading drum, hair removal and hair removal, and the recycling of waste water and chrome tanning waste liquor.

To promote energy saving and emission reduction, Xinji has popularized this technology in the leather industry of the whole city. At present, there are 14 tanning enterprises.

The responsible person of the Xinji Leather Industry Industrial Zone Management Committee said that they supervised the enterprise to achieve the chrome solution "separate storage of enterprises, special treatment and pportation of sewage treatment plants, centralized treatment", and vigorously promoted the new technology and equipment of chrome solution, lye expansion, water saving drum and other new technologies and equipment. Tanning water consumption will be saved by more than 1/3, tannery sludge reduced by 80%, and chrome and lye emissions reduced by 70%.

In particular, the Dongming group's tannery wastewater recycling technology project has won the first prize in the national energy conservation and emission reduction. By guiding enterprises to adopt chrome free tanning, chrome free tanning leather has accounted for more than 70% of the total, thus becoming a veritable "green leather".