New Technology Of Energy Saving And Emission Reduction In Independent Innovation Of Tannery Enterprises

It not only reduces sludge discharge by 85% during the tanning process, but also saves incineration expenditure of 100 yuan per ton, and achieves recycling.

Recently, Wenzhou Baoshi Leather Co., Ltd., located at the water head tanning base in Pingyang, has independently innovating clean production technology, attracting many enterprises around the world to learn from it, and set off a clean "revolution" there, and the water head environment is expected to be further purified.

Tanning is one of the pillar industries in Shui tou town. It also brings serious environmental pollution as well as huge economic benefits.

After years of renovation, the town's wastewater discharge has been up to standard. In October last year, it adopted the "pick up cap" inspection.

However, the sludge produced in tanning process is another heavy source of pollution, which continues to beset the leather industry.

Wenzhou Baoshi Leather Co., Ltd., which is the first to solve the problem of sludge pollution, has brought "Gospel" to the sludge disposal of the tannery industry.

According to Li Huading, tanning engineer, degreasing, plucking, swelling and tanning are all the initial stages of leather making, and also the most polluted part of tanning industry.

In particular, it is necessary to add lime to the expansion process of raw leather, resulting in a large number of sludge, which become an insoluble source of pollution.

During the renovation period, the company and Zhejiang Shenghui Chemical Co., Ltd. jointly launched the technical research, and independently innovating on the basis of digestion and absorption of leather cleaning technology at home and abroad, and mastered the new technology of comprehensive treatment of sludge innocuity and reduction. It was put into use in June last year and began production in September.

After six months of production practice, the innovation of Baoshi has attracted many enterprises to learn from the leather tanning base.

Chen Chengyong, chairman of Baoshi company, calculated to reporters that the daily output of 2000 pieces of raw leather was about 8000 kilograms. When the original process was expanded, 8% lime and 2.5% sulphide alkali were added. Finally, the 675 kilograms of sludge precipitated with the solubility of 10% lime and raw skin.

The use of new process instead of lime alkalizing agent eliminates sludge production, and only produces about 100 kilograms of sludge after dyeing and other processes.

Compared with before and after, the sludge decreased by about 85%.

At the same time, 100 kilograms of sludge burned through the boiler installed by the company, not only saved the incineration expenditure of 100 yuan per ton, but also produced steam as the energy re-use, burning coal cinder can also sell money, and achieved recycling.

Tannery industry's energy conservation, emission reduction and consumption reduction, the development of circular economy, so that the water head environment is further purified. Water head town has also issued a lot of incentives and incentives.

The completion of cleaner production pilot projects and the adoption of provincial examination and approval will be rewarded by 10 thousand yuan, and the first three enterprises that have achieved the goal of energy consumption reduction and the achievement of energy saving and consumption reduction will be rewarded 5000 yuan respectively.

Moreover, when reviewing the advanced industries such as "the top twenty industries", energy conservation and emission reduction will be given priority as a bonus.