Chromium Containing Leather Scrap Is Expected To Achieve Resource Utilization.

　　 Leatherwear Is making Clothes & Accessories , shoes Hats and bags are important raw materials. The leather crusher produced in leather production is hazardous waste or resources? A year ago, it was again focused on the exposure of the "toxic capsule" incident. Because the media can not distinguish the difference between trivalent chromium and six valence chromium, the "leather should be used in the industrial process to use chrome tanning preparations, so the capsule made of this method is often described by the heavy metal chromium exceeding the standard". The illegal act between the illegal gelatin factory and the illegal pharmaceutical factory is transferred to the leather industry.

For those who do not know the leather industry, under the media rendering, the "chrome leather scrap" has become the culprit. This makes the innocent leather tanning enterprises' chrome containing leather debris unable to process and a large backlog in the factory area, becoming a major problem in the leather industry.

Then, chromium Leatherwear What are the properties of the broken materials? The technical expert of the China Leather Association has set up an expert group. According to the international opinion on the chrome containing leather scrap and the way of handling, a lot of research and analysis have been done. The results show that there is no toxicity in the leather crusher containing chrome, and it does not have the characteristics of hazardous waste. "Specialized Committee" China Leather Association technical Specialized Committee recently also conducted a deep dialogue with the Ministry of environmental protection on the way out of chrome leathers and the Ministry of environmental protection (see inside), hoping to remove the chrome containing leather fragments from the list of national hazardous wastes issued in 2008, which is conducive to resource utilization.

Academician Shi Bi, an academician of the Chinese Academy of engineering, analyzed at the dialogue conference: "the chrome tanning agents used in tanning process are trivalent chromium, which does not involve six valent chromium. This is the case all over the world. There are no problems in the history of chrome tanning for more than 100 years. In addition, the society has a wrong understanding of trivalent chromium and six valent chromium, and the relationship between the two is not clear. In fact, trivalent chromium can hardly be transformed into six valent chromium under natural conditions. This is widely recognized by scholars and governments both at home and abroad, and also has sufficient scientific basis. Our country has also undergone numerous experiments to identify toxicity, which fully meets the standard requirements and therefore does not possess the characteristics of hazardous wastes.

It is gratifying to note that at the dialogue session, we heard the Ministry of environmental protection's "voice" endorsed by the Ministry of environmental protection on the view that there is no danger characteristic of chrome containing leather fragments from the technical point of view in the tanning industry. But considering the difficulties of environmental supervision in China, the Ministry of environmental protection of the people's Republic of China believes that it is still difficult to remove it immediately from the list of hazardous wastes, but the existing problems can be solved by formulating tannery industrial waste management standards.

In short, at present, the EU and the United States treat it as a general solid waste for the properties of chrome containing leather waste. Taiwan area once considered it as a hazardous waste before December 2006, but after extensive research and learning from foreign experience, it has been regarded as a general waste management and has not had any environmental and regulatory problems. Therefore, leather scrap is feasible in resource utilization.