"Resource Utilization Of Leather Wastes" Will Turn Waste Into Treasure.

According to the world clothing shoes and hat net, in September 17th, Professor Wang Quanjie, a professor of Yantai University, led the team through 11 years of painstaking research on the "resource utilization of leather waste" project in Yantai, Shandong, through the national assessment.

The project has not only solved the long troubled China.

And even the whole world has a headache.

Waste pollution is a difficult problem, and turning waste into treasure is needed urgently for industrial and agricultural production.

It has remarkable economic and environmental benefits and has been well received by the experts.

China is the largest leather producing country and consumer country in the world. Its total output accounts for 1/4 of the world's total, and leather enterprises generate 1 million 400 thousand tons of solid waste every year.

"The most difficult part to deal with is that the waste containing heavy metal chromium is about 280 thousand tons. In 2016, the Ministry of environmental protection put chromium waste in the list of hazardous wastes, prohibiting landfill and incineration, and leather tanning enterprises all over the country were beset with scraps of scraps."

According to Wang Quanjie, the famous leather expert and director of the national leather technology research and Extension Center, in order to solve this problem, since 2006, he has led his team to study the utilization of animal protein wastes in leather and animal husbandry industry, and has developed 9 new products, and has authorized 16 invention patents.

According to the introduction, through the technology of leather waste utilization, the comprehensive utilization of leather wastes such as raw leather, blue chip, finished leather and leather products from domestic refuse can produce a variety of products, such as foliar fertilizer, drip fertigation and fertilizer, which can be directly used as liquid fertilizer, such as surfactants used in industrial and agricultural production and daily life; for example, the industrial foaming agent for corrugated paper and plywood, and cement foaming agent for external wall insulation, high building sound insulation materials, such as organic fertilizer with protein content for improving soil.

"This technological process makes protein waste eat dry, even filter slag has been made into retanning reagents used in tannery technology and anti seepage water agent for cement foamed, realizing the whole process of production without waste water, waste and exhaust emissions, without any new pollution, it is very expensive."

The director of the national identification technology center and Sichuan University Professor Wei Wei commented.

The expert group believes that after a year's pilot project, industrialization of the project is feasible.

The tackling of this technology not only solves the pollution problem of leather waste, but also has a broad social significance and huge economic benefits "double value".

For example, the protein organic fertilizer produced from tannery waste can solve the problems of long-term use of fertilizer, thinning of field plough layer, decrease of organic matter content, acidification and acidification of soil, and lack of trace elements in crops.

"Shandong is a major agricultural province and a large province of chemical fertilizer consumption.

In 2015, the chemical fertilizer application in the whole province was about 4 million 635 thousand tons, and the compound fertilizer application amount was about 2 million 240 thousand and 400 tons, while the organic fertilizer application amount was 1 million 374 thousand tons, accounting for only 30.5%.

Wang Hongzhang, a Yantai based soil fertility station expert, told reporters: "if this research result is popularized, it will greatly benefit the reduction of chemical fertilizer and the integration of water and fertilizer. Not only Shandong, but also the national agriculture will benefit."

"Taking Shandong Province as an example, in the past 3 years, the average annual production of 60 million square meters of leather is more than 20 thousand tons of blue peel and more than 20 thousand tons of waste. In addition, leather products enterprises and livestock and poultry slaughtering industry make up about four hundred thousand tons of protein waste each year, which not only causes serious waste of protein resources, but also increases the cost of processing."

According to Chen Zhanguang, Secretary General of the China Leather Association, every ton of blue waste is charged to the cost of nearly 1000 yuan, and it also brings great pressure to environmental protection.

Liu Xuefeng, director and professor of Applied Chemistry Department of Jiangnan University, believes that the cement foaming agent made from tannery waste not only makes the foamed cement with light weight and heat preservation and sound insulation, but also has the effect of flame retardance and fire prevention. It will become a high quality insulation material for high buildings and sound insulation materials for interior walls.

"At present, the project has passed the demonstration of Jinjiang Strait plan in Fujian Province, and supports the establishment of the plant in the city.

At the same time, we are seeking partners in Shandong Province, planning to build a demonstration project, and then promote it to the whole country.

Reporters learned that in the past 30 years, Wang Quanjie led the team to complete 32 scientific research projects, and won 9 national and provincial level science and technology awards. Among them, the national science and technology tackling project "rough surface pig skin leather new technology" pioneered the new technology of split wet skin and large area to repair disability, and won the first prize of national science and technology progress.

More interesting reports, please pay attention to the world clothing shoes and hats net.