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Scientific And Technological Innovation Escorts Haining's Tanning Environmental Protection

2014/7/31 10:03:00 16

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Technological Innovation Haining Leather Making Environmental Protection

"P", "geographically speaking, Haining is in the leading domestic level in the application of tannery and environmental protection technology." Professor Lan Yunjun, director of the Leather Research Institute of Wenzhou University, said in an interview with reporters that after years of practice, a sound chain of technological innovation in industry, University and research has been formed in Haining. It provides continuous support for the clean and environmental protection of tanning production in Haining. 
 the combination of production, teaching and research is required for enterprises to /p >
During the days when reporters interviewed Haining tannery and environmental protection topics, no matter whether the Haining municipal government, Haining leather industry association or tanning enterprise mentioned in the interview, they talked about the important role played by tanning environmental protection technology in Haining's environmental protection upgrading in the interview. P 
 in fact, in the process of in-depth interviews with Haining, Haining government attaches great importance to technological innovation, and Haining leather enterprises' application to new technologies and new processes and the bridge role played by Haining leather industry associations in industry, University and research all let journalists feel the charm of technology in tanning and environmental protection. 
 according to Chen Hongming, deputy director of Haining Environmental Protection Bureau, tanning is one of the important pillar industries in Haining, and the government attaches great importance to and supports the innovation of science and technology. Haining Leather Research Institute was set up in Haining, and a public laboratory of Zhejiang science and technology innovation service platform in leather industry was established, which played a major role in leather technology research. 
Not only that, but in order to promote the healthy development of Haining's industries, Wenzhou University, Sichuan University, Shaanxi University of Science and Technology, Wenzhou University and Wenzhou University have also established close ties with Haining. "Wenzhou University not only owns Leather Research Institute," Lan Yunjun said, "also established the Key Laboratory of leather engineering in Zhejiang Province, and the Zhejiang provincial leather industry science and technology innovation service platform founded by 6 units led by Wenzhou University". 
 in the construction of research institutes across the border, LAN Yun Jun said that he was authorized by the academician of Sichuan University to build a provincial leather academician workstation jointly led by Wenzhou University and Haining Leather Research Institute, rising leather and Wenzhou red dragonfly. Lan Yunjun introduced that the workstation occupies an important seat in 8 expert academician workstations in Zhejiang Province, and is also the only expert workstation in the province, which is a typical academician led by universities. 
Besides P, LAN Yun Jun also said that Haining Leather Research Institute, Wenzhou University and other units jointly set up Zhejiang leather cleaner production technology innovation alliance. These leather technology research and development institutions, as the main research direction of the leather tanning industry development, are closely related to the demand of leather enterprises in Haining. 
 "we are doing things that the government needs, the industry is concerned about, and the business is welcome." Lan Yunjun said. In the interview with reporters at the Haining Leather Research Institute, Sun Haobin, President, said, "we are developing technology according to the requirements of tanning enterprises. 
 How can we understand the needs of enterprises? Lan Yunjun said. "I will not be in the unit all the time. I often go to the enterprise to communicate with each other face-to-face, so that I can understand the real needs of the enterprises and develop the technologies that the enterprises need." 
 Lan Yunjun said he had established deep feelings with the leather industry association of Haining, and often went to the enterprise survey together. When communicating with enterprises, they can collide with a lot of sparks, and continue to track and improve the technological achievements promoted by enterprises, until they can fully meet the requirements of enterprise production. "Professor LAN Yun Jun basically goes to the enterprise every week and comes to Haining at least twice a month." Gong Huihong, Executive Deputy Secretary General of Haining Leather Industry Association, told reporters. 
 "enterprises lack technology, and associations will also invite experts to communicate with enterprises." Gong Huihong said that during the environmental verification period, when the demand was not so clear at that time, the association invited engineers from the Zhejiang Provincial Academy of Sciences to carry out technical guidance. "Sometimes Lai Haining, the professor of Sichuan University and Shaanxi University, will also pull them down to see what technology the enterprise lacks." 
"P >, when reporters visited three enterprises in Haining, such as Fu Sheng Leather Co., Ltd., Haining brothers leather Co., Ltd. and Zhejiang Fudi Agriculture Co., Ltd., they also said," the experts in leather, such as Shi academician, sun Dean, Professor LAN, occupy a very important position in leather making and environmental protection technology. We have any technical requirements and we will give them feedback in time. " 
 in the interview, the reporter learned that the Haining Leather Research Institute was founded in 2007. At present, there are 3 PhD students with advanced research and development conditions and equipment. Professor LAN Yun Jun's team is our main technical support. Academician Shi BII is a senior expert in science and technology of our research institute, "Sun Haobin said. With the help of universities and scientific research institutions, the Haining Leather Research Institute stands on the front line of tannery technology research and development, not only undertaking important R & D projects, but also bridging the gap for all parties, and promoting the efficient development of industry, University and research work. 
 professor Lan Yunjun is not only the main technical support of Haining Leather Research Institute, but also the director of Leather Research Institute of Wenzhou University. He said that the R & D team of more than 30 people from the Leather Research Institute of Wenzhou University is similar to the Haining Leather Research Institute, and has also established close relations with other R & D institutions and R & D personnel. 
 > "scientific research is the most expensive". Lan Yunjun said that in recent years, the Leather Research Institute of Wenzhou University has invested more than 45 million yuan in leather cleaning technology, with a total construction cost of 34 million yuan. Haining Research Institute of leather research and development funding, Sun Haobin said, "also more than 40 million yuan." 
 new technology helps enterprises < a href= "http:// www.91se91.com/news/index_c.asp" > environmental protection construction < /a > /strong > /p >
 since the environmental verification in 2010, the Haining Leather Research Institute has issued a number of new environmental protection technologies. Wenzhou University has developed a number of new technologies for leather making and environmental protection. Among them, reclaimed water, chrome free tanning technology, deodorizing technology, hair removal technology, hazardous waste treatment technology, photocatalyst deodorization technology and so on have been put into use in enterprises. 
 "reclaimed water recycling is a water saving technology commonly used in tannery enterprises in Haining," Lan Yunjun said. "Another commonly used water-saving technology is downsizing technology." 
 Lan Yunjun said that in the tanning process, some of the waste water which is not required for the production process can be recycled and reused, which is called recycled water reuse. Now, some saltwater can also be used. He said that some salted leather enterprises can be recycled for pickling tanning process after being treated. 
 in order to reduce water consumption, in the leather making process, with the promotion of new materials and improvement of process technology, some processes can be reduced, and the water consumption can be reduced from process to reduce water consumption. Lan Yunjun said that this method is called downsizing process. "For example, when the modified dialdehyde starch is used as retanning agent, the pH value due to retanning has reached the requirement of neutralization process, and the process will not be used, so as to achieve water saving." 
 Haining Leather Research Institute has also developed a unique way in water saving technology. "Fur tanning has the largest water consumption," Sun Haobin said. The Haining Leather Research Institute began introducing Spanish technology in 2007. It is reported that the technology has been funded by Zhejiang science and technology office. 
 however, the technology must be upgraded in the domestic use of the drum core technology. After modification, whether tanning or shedding, the efficiency and efficiency are also greatly improved, and the water consumption of the equipment is also greatly reduced. Sun Haobin said that the technology was relatively mature in Haining, and now it is not only for tanning but also for tanning. 
 does the decrease of water consumption mean that the output has declined? The answer is not so. According to Sun Haobin, the amount of sewage discharged from Haining has decreased from 4 million 588 thousand and 400 tons in 2010 to 3 million 233 thousand and 900 tons in 2013, 29.52%, while the output value of leather industry has increased from 3 billion 72 million yuan in 2010 to 5 billion 366 million yuan in 2013, an increase of 42.75%. 
 saving water and reducing pollution is a way of leather making industry. Cleaner production can also greatly reduce the pollution discharge in the process. 
 Lan Yunjun said that during the process of cowhide tanning, sodium sulfide was used to depilate, and sodium sulfide was the most polluted substance in the depilation process. Because the cow's hair is thin, short and no strength is not easy to use, resulting in the destruction of cattle hair into the waste water into COD and ammonia nitrogen, increased ammonia nitrogen emissions and sludge volume. 
 now, the micro enzyme hair loss hair removal technology developed is treated with a small amount of biological reagents, and a small amount of sulphide alkali is used to remove hair. With this technology, the removed cattle hair can be collected and collected without entering the sewage. Lan Yunjun said that this link can make the sulphide base only use 1/3 of the original, greatly reducing the pollution of sulfide alkali. 
 Lan Yunjun said that the cattle hair needed to be processed should also be processed. The smell of burning will not be desirable. He said that now Haining's agriculture is working with Wenzhou University to study the degradation of cow hair into water-soluble keratin stuffing. The protein filler can be used in leather filling process, and has the characteristics of circular economy. 
 "after a number of small tests, the success of the research and development has been successful in the near future, and it can be promoted abroad after large production inspection." Lan Yunjun said that the technology of hair removal by Microenzyme protection is the front part of this work. "So the two technologies are called" wool packing and wool degradation control to prepare leather packing technology ". But now it is still docking with Haining's blessed land agriculture. Once mature, it can be popularized throughout the country. 
 < < a href= "http:// > www.91se91.com/news/index_c.asp > wool hairs removal technology < /a > can reduce the emission of COD and ammonia nitrogen by 50%. Lan Yunjun said. Deashing is also a process of ammonia nitrogen emission. According to his introduction, ammonium sulfate or ammonium chloride has been used to remove ash. Ammonia removal or ammonia removal can reduce ammonia emissions by more than 90%. 
 Lan Yunjun introduced that in the process of cleaning production, the corresponding technology has been developed for the treatment of chromium. Chromium rich sludge can be directly reduced by chromium powder, chrome free tanning technology and chrome free retanning technology in the production process. 
 for the treatment of chromium and other hazardous wastes that have been produced, "a subcritical water thermal reaction" is being developed at present. Sun Haobin said that the technology was reformed in a Japanese technology, requiring a temperature of about 240 degrees Celsius and a pressure of 24 kg. Although it is not known as high temperature and high pressure, it is also known as subcritical. 
 the first batch of tests last year, the total chromium content of the treated waste powder is only 160ppm. "We can't believe this when we see this result." Sun Haobin said, "if this result is reliable, it shows that the treated sludge is completely non-toxic." After that, the Zhejiang provincial ring Academy was commissioned to carry out the verification test. The result of the test was 189ppm, and Sun Haobin said the result was satisfactory. However, in order to make the test results more comprehensive and reliable, and through the sludge high temperature, acid-base treatment and various environmental tests, different data appeared. The highest level was only 2000ppm. The total chromium content of the sludge before treatment was above 8000ppm, which is still optimistic. 
When p reporters interviewed, the workers took out the powder processed by this technology. Reporters saw bags of coffee like granules. According to Sun Haobin, the former sludge is yellow and stinky, "after treatment, these can be used as fertilizer." The reporter grabbed the powder and put it in front of his nose. 
 the staff then took out a milk bottle like container and told reporters that this product was processed by the technology and processed further. Reporters saw the label on the bottle of fat water transfer water, detoxification Bao, fulvic acid plant nutrient solution and other labels. "After processing, the extracted biologic reagents can be reused." Sun Haobin said. 
 "using this technology can make chrome sludge reach 600ppm standard, and even achieve 160ppm in the future." Sun Haobin said, however, the technology requires higher equipment, and the centralized processing method is better, which can save the processing cost 87% for enterprises. "The technology is expected to see preliminary results in the second half of next year." Sun Haobin said. 
 "our scientific research conversion rate has been 100%, so long as it is a successful technology, enterprises are using it." Sun Haobin said that in Haining, leather technology research and development has never stopped. 
 < a > href= > http:// > www.91se91.com/news/index_c.asp > Leather > /a > cleaner production should be based on the premise of improving product quality /p >
 the development of leather technology has made Haining leather enterprise have the most advanced technical support. "Haining is in the leading domestic level in the application of advanced leather and leather technology," Lan Yunjun said. In some places, only one or two tanneries are well applied, while in Haining the overall level is high. 
 "like car upholstery leather, this technology is the most difficult, but the best in the country is in Haining." Lan Yunjun said that in terms of sewage treatment, reclaimed water and salt water reuse are only better in Haining, and the technology of photocatalytic deodorization can only be seen in Haining. 
 Lan Yunjun said that the domestic research and development of clean technology is still ahead of the world. Compared with the international technology, the key technologies are not very different, but there are still some differences compared with the standpoints and technical support systems for developing clean technologies abroad. Foreign chemical companies are relatively early and large, and are more likely to form scale promotion. However, the domestic promotion efforts, application research and development and brand recognition have not reached the international level. 
In order to achieve or exceed international standards, LAN Yun Jun said, "there is great room for R & D in clean production, and at least 10 more years can be done." P 
 Lan Yunjun said that chrome free tanning and chrome free retanning technologies need further maturation and scale up. He said that although the technology is being promoted, the maturity is not enough. At present, the chrome free tanning varieties are only 10% of the total leather varieties, and there is still a long way to go. "In another 10 years, chrome free tanning products may account for 30%." 
 there is still room for hair removal technology, and further cleanliness is needed. Lan Yunjun said that the waste generated from leather making, such as the hair produced by hair removal technology, can be used, and there will be more material in the future to "realize comprehensive and comprehensive utilization of waste". He said that good use can reduce pollution and increase economic and social benefits. 
 "in the future, renewable resources can be used to make leather chemicals in cleaning." Lan Yunjun said that as fossil resources become less and less, renewable oil, starch and cellulose will be considered as the key objects to develop leather chemicals. Now, like starch tanning materials, retanning materials and filling materials, Haining's enterprises have begun to try to promote production. 
 "no matter now or in the future, the promotion of clean technology must be based on improving the quality and ecology of product quality, and improving technological content can not be sacrificed at the expense of product quality." Lan Yunjun said that most of the technology costs will increase after the technology, "if the cost is increased, the product will not be as good as before, and the market will not recognize it." 
 "like fur rich leather, fur on one side is wool on one side, and velvet on the side. It is coarse and unattractive with chrome tanning technology, and with chrome free retanning technology, its fleece is short and dense. It looks beautiful, high-grade, and the price goes up, and the market is better, so this is the end." Lan Yunjun said.