The Development Of Green Leather Depends On Four Principles.

The light industry revitalization plan recently approved has clearly put forward that light industry should take a new development path of green ecology, quality safety and circular economy. The leather industry is an important part of light industry. The leather industry itself is in line with the industry of circular economy. At present, the leather industry is facing a critical period of strategic transformation. We must strengthen our confidence, fully implement the Scientific Outlook on Development, persist in sustainable development and harmonious development, and take the road of new industrialization with resource-saving and environment-friendly, so that the whole industry can be improved from quantity oriented to quality, brand, environmental protection, export and efficiency. How to develop the green circular economy of leather industry can start with following several basic principles: Re duce, Reuse, Recycle and Rethink. To implement the principle of reduction, to develop circular economy and to promote energy conservation and emission reduction, the most fundamental thing is to implement the principle of reduction, specifically to reduce energy consumption to the maximum extent and to ensure that the discharge of pollutants from industrial production is reduced to a minimum. In the leather industry, many visionary entrepreneurs have invested a lot of manpower and resources and funds to study how to save energy, reduce emissions and innovate environmental protection, and have made many achievements. The leather manufacturing was carried out under the condition of the smallest environmental impact, and the water saving amount reached 48% by reducing the use of 28% heavy oil and reducing the electricity consumption by 76%. By using solar energy to generate 12% hot water, the air pollution was reduced by the direct coating method through the production of 87% leather leather, and the leather with the smallest energy and water consumption was reduced. The water treatment plant in Dongming was changed to the energy saving overloading drum, and the Ash Leaching wastewater and chrome tanning wastewater were classified and recycled. The annual electricity consumption was 150 thousand degrees. The annual wastewater discharge volume was 110 thousand M3, the annual salt saving 176 tons, the annual saving salt 176 tons, the chrome tanning liquid 471 tons, the annual saving material 2 million yuan, and the yield of cowhide wet blue leather increased by 1 times. Dewey introduced the LITE system to explore how. Through technological innovation, not only reduced the production costs of enterprises, but also greatly reduced the operation load of tannery sewage treatment plants, and reduced the environmental pollution caused by sulfide and chromate. To implement the principle of reuse, the principle of re-use is to use resources as many times or as many ways as possible in order to maximize the utilization of resources. In terms of resource reuse, a number of excellent enterprises have emerged in the industry. With innovative thinking and practical spirit, they have explored various effective ways of reuse, which is worthy of reference and promotion by industry colleagues. During the long term production practice, Dongming industrial group, a leading enterprise in leather industry, has studied the key technology of recycling chrome tanning waste water and applied it to achieve good waste utilization effect. Jiaozuo Longfeng Leather Co., Ltd. is the largest sheep skin producer in China. Exports amounted to US $150 million. They adhere to the principle of giving priority to environmental protection. Sewage treatment is not only up to standard discharge, but also the use of biogas generated from the sewage treatment plant to be sent to the dining hall for 3000 job meals, and the free chromium free sludge is sent to the rural area where the plant is located. The household supports eight hundred yuan to help farmers build biogas digesters in three villages and make comprehensive use of the sludge to turn into energy. Haining Zhejiang started the study of harmless and resourceful tannery sludge, and explored the change of sludge into organic fertilizer. Guangzhou Huadu Lixin collagen Textile Technology Co., Ltd., separated the waste material from blue leather waste and finished leather waste, and developed non-woven fabrics. To implement the recycling principle and recycle principle is to achieve multilevel recycling of waste and close closed cycle of resources through multiple recycling of wastes. This can save energy and reduce consumption and reduce pollution emissions. To implement the principle of rethinking, China's national conditions are different from those of developed countries. The situation in different parts of the country is also different and complicated. The 3 principles of reduction, reuse and recycling are not enough. We must find a new principle based on the profound understanding of the principles and essence of circular economy, that is, the principle of rethinking. This principle can expand people's innovative thinking. In fact, it uses dialectical materialism to explain and apply the circular economy, solve the problems and deep contradictions in the work of energy conservation and emission reduction, and build a resource conserving and environment-friendly society. Wang Xiaonan: editor in charge