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Full closed recycling technology of tanning liquor
 
        With the proposed national plan of 45, the leather industry 45 key development direction for "biological enzyme for leather and fur processing technology promotion, chrome free tanning technology, integrated waste recycling technology" (excerpt from guidance on the development of China's leather industry "45") to develop to scabal spent several years at a cost of billion dollars in research and development of waste recycling technology will become the future leather industry to promote the focus of the project. Nowadays, the tanning industry has caused serious environmental pollution, waste of resources and ecological destruction, waste liquid and solid waste, high cost and difficult to eradicate.
        First, the purpose of research and development
In order to reduce the discharge of waste liquid and solid waste, realize the global "green" leather making, improve the living environment of human beings. At the same time, improve the quality of wet blue and finished leather and leather rate.
Two, technical description
The technology through nearly 10 years of research and development has achieved 10 national invention patents and international patents for inventions, the experienced customers for 2 years and 3 years of industrial production and application. It is proved that the technique is safe and reliable, economic, efficient and stable. If a wide range of applications can basically solve the pollution problem in the tanning industry.

Three, technical advantages
Environmental protection aspect:
After more than 70% reduced chromium sludge discharge;
After reducing the ash sludge discharge more than 80%;
After 70% reduction of pollutant emissions, liming, pickling, tanning liquid no row;
After more than 70% water saving;
After more than 70% of land saving and environmental protection;
After more than 70% reduction in environmental protection facilities;
After more than 70% chemical agents reduce environmental protection;
After reducing the environmental costs of more than 50% human.

Product quality:
After the quality of the products meet the national standards;
After the leather rate increase of 2%-5%;
After the blue lines are visibly reduced;
After improving the shrinkage temperature of 2 DEG -10 deg;
After the tear strength increased about 15%;
After loose rate lower than 15%;
After Pizeng ash weight increased by 8%-20%;
After the filter to improve the quality of the hair root hair, less residue.

Chemical aspect:
After chrome powder can save 20%-50%;
After enzymes can save about 60%;
After salt saves about 80%;
After saving 100% individual material etc..
Investment intensity: investment for the traditional environmental protection facilities of the 3-10%.


        The main equipment are: water pump, collecting tank, connecting pipe, filter hair machine, etc..
For example, Nissan 100 tons of leather tannery, for example, if the use of traditional process, according to the annual production of 10 month, need to consume water about 30 million tons, need to discharge of sewage on the environment about 25 million tons, besides the water, containing a lot of COD, BOD, sulfide, chromium compounds and various acid, alkali, salt, oil, preservatives, chrome tanning agents, dyes and other chemicals, causing serious pollution to the environment.

        Governance needs investment in environmental protection about 4000 million yuan; and the use of the waste recycling process, can greatly reduce the pollution to the environment and only need to revamp the traditional tanning equipment properly and put a few, if the use of new equipment, input costs in 200 million yuan, greatly reduce the government on environmental protection investment and management.
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