The remediation of printing and dyeing pollutants has been carried out one after another. We believe in a "green" tomorrow
According to the Zhejiang Provincial "Textile Dyeing and Finishing Industry Air Pollutant Emission Standards" and the requirements of the provincial and municipal environmental protection departments, the District Environmental Protection Bureau recently convened 15 printing and dyeing enterprises within its jurisdiction to deploy air pollutant remediation, implement the remediation requirements, and require companies to start from the production process , Waste gas collection system and waste gas treatment facilities have begun to carry out remediation, focusing on upgrading process waste gas remediation and sewage station upgrading and remediation.
In recent years, printing and dyeing companies have become more mature in their attention to environmental protection, which makes our consumers feel at ease. Although the progress is relatively slow, it has been going on smoothly. We always believe that there will be a day when our consumers will no longer have to worry about whether products are healthy and environmentally friendly, and whether corporate production pollutes the environment.
Upgrading of "Spicy" Hand Pollution Control in the Important Town of Printing and Dyeing
Nowadays, the government is making great efforts to rectify environmental protection, and many hard targets have followed one after another. Measures such as daily penalties, seizures, production restrictions, and administrative detentions are like a sharp sword. They have put forward stricter and comprehensive environmental protection work in the printing and dyeing industry. Requirements. It is worth mentioning that, with the introduction and in-depth implementation of a series of policy measures, some printing and dyeing clusters have initially seen the effects of industrial upgrading.
Keqiao: the survival of the fittest and the first to enjoy the environmental dividend
With the positive stimulus such as the rebound of international crude oil prices, the textile and apparel industry in Keqiao District realized an output value of 58.13 billion yuan from January to April, a year-on-year increase of 5.9%. In the same period, the output of printed and dyed fabrics in Keqiao District was 5.229 billion meters, a decrease of 0.7%, and the sales volume was 17.4 billion yuan and 16.7 billion yuan, an increase of 6.3% and 5.6%. Compared with the national and Zhejiang output declines of 10.52% and 1.12%, Keqiao printing and dyeing industry continues to "lead". It is reported that the printing and dyeing industry in Keqiao was still booming in May, and the operators of printing and dyeing enterprises in Binhai, Qianqing, Lizhu and other places generally reported that the "footsteps" of the off-season this year came relatively late.
Although the sales of the local textile industry in the first quarter fell 1.5% compared with the same period last year, profits increased by 6.9% year-on-year. This shows that Keqiao textile enterprises have continuously improved their product grades and enhanced market competitiveness. The transformation and upgrading of Keqiao textile enterprises is inseparable from the local government's constant attention to energy conservation and emission reduction and real-time supervision.
It is reported that recently, after complaints from local residents, a small and micro sewage enterprise with 30 water jet looms in Keqiao Huashe Street, Shaoxing was suspected of leaking sewage. After verification, the local government's environmental law enforcement officers immediately shut down the enterprise. As the responsible unit responsible for the jurisdiction, Huashe Street was deducted 1 point in the May assessment. Since last year, Keqiao District has comprehensively rectified and upgraded small and micro pollutant companies. So far, 1,191 companies have been shut down and 1,231 companies have been standardized and upgraded. In March of this year, Keqiao District, through a "look back" operation, found that 35 shut-down enterprises had illegally resumed work, and they have been handed over to the public security department for handling.
"It is precisely to intensify the supervision of environmental protection for a group of small and medium-sized printing and dyeing enterprises, thereby regulating the competitive environment among enterprises, so that printing and dyeing enterprises are no longer forced by the price difference, and put more energy on In terms of how to develop new products that no one owns. In addition, the high standards of industry entry barriers have also enabled those printing and dyeing companies that have already used real money to eliminate outdated production capacity. In the subsequent operations, they began to enjoy not only Subsidies and dividends from the local government and national policies, as well as the corresponding cost savings of the enterprise itself, as well as the improvement of safety production coefficient and product quality." A local entrepreneur in Keqiao analyzed to a reporter from China Textile News.
As the first batch of enterprises settled in the Binhai Printing and Dyeing Concentration Zone, Yingfeng Textile has invested 300 million yuan in order to thoroughly implement the purpose of energy saving, emission reduction and environmental protection. It is not only used for the construction of new factories, but more importantly, the original more than 200 Taiwan (sets) of backward equipment was eliminated, and 168 (sets) of advanced equipment from Germany and South Korea were introduced. "Our goal is to create a new type of energy-saving and environmentally-friendly enterprise and a smart printing and dyeing enterprise that develops towards the Internet of Machines, the Internet of Plants and the Internet of Things," said Fu Shuangli, Chairman of Yingfeng Textile (Printing and Dyeing) Company.
The production situation of Keqiao printing and dyeing enterprises in the first half of the year has made many investors optimistic about the future development prospects of the local printing and dyeing industry. The assets of Wuyang Printing and Dyeing Company, which went bankrupt not long ago, were successfully auctioned and sold by Qia
Interpretation of National Compulsory Standard Technical Specifications for Printing and Dyeing Industry
Textile products will inevitably come into contact with various chemicals in the production and processing process, especially printing and dyeing and finishing processing, as a typical chemical treatment process, will use a wide variety of dyes, auxiliaries, etc. These chemical materials are likely to contain or produce some harmful substances to the human body more or less, and the harmful substances remaining on textile products may cause harm to human health.
The national compulsory standard-GB1840-12003 "National Basic Safety Technical Specifications for Textile Products" was formally implemented on January 1, 2005. Since mandatory national standards have the legal significance of mandatory enforcement, the formulation of this standard is based on the "Standardization Law of the People's Republic of China" and "Product Quality Law of the People's Republic of China", and must also comply with the rules of the game stipulated in the wto/TBT agreement . As only the basic safety technical requirements are involved, other product requirements shall be implemented in accordance with the corresponding standards. However, if the basic safety technical requirements for textile products in relevant standards and other technical documents do not meet the technical specifications, the specifications must prevail.
The basic safety technical requirements for textile products put forward by this specification have 5 major items: formaldehyde content, pH value, color fastness, odor, and azo dyes that can reduce carcinogenic aromatic amines.
The evaluation content of the above five major items as the basic safety technical requirements of textile products has been carefully considered. At present, some international textile ecological standards have been partially introduced into the international trade of textiles and garments. These standards have put forward specific requirements on the ecological safety performance of textiles and garments, either from the concept of the whole ecology or from the concept of partial ecology. At the same time, it has also formed a powerful external driving force for standardizing enterprise production and improving the technical level and competitiveness of enterprises.
However, due to the imbalance in economic and technological development among countries or different regions in the world, these ecological standards have frequently been used as effective tools to build new trade barriers. According to the WTO Agreement on Technical Barriers to Trade, many current technical barriers to trade characterized by green are encouraged as a whole, but some obvious trade protectionist tendencies are subject to certain restrictions.
At present, almost all textile ecological standards in the world are adopted voluntarily, and numerous limit control requirements are often adopted selectively. The basic safety technical specifications for textiles discussed in this article are compulsory national standards with a statutory nature. Therefore, their specific content must take into account the most basic safety requirements for the human body, as well as the current reality of my country’s textile industry. The level of technology, the current level of economic development in my country, and the actual consumption level of the people. At the same time, in accordance with WTO rules of the game, the mandatory regulations should treat domestic textile products or imported products equally, and cannot be a non-tariff trade protection measure that restricts imports in disguise. Therefore, the drafters of the specification determined the following four principles for selecting assessment items based on full consideration of various factors: one is to reflect the basic requirements of product safety performance; the other is to include the compulsory requirements in foreign regulations or standards. Sexual content; third, the evaluated items will have a significant impact on product quality; fourth, the selected items have reliable testing methods or methods.
Specific analysis of these five mandatory monitoring contents is not difficult to find that the content of formaldehyde and azo dyes that can reduce carcinogenic aromatic amines have actually become the most basic safety technical requirements in the current international textile and apparel trade. At this stage, almost all textiles and garments exported to Europe, America, Japan and other countries have been required to provide relevant inspection reports, and the European Union and Japan have also had relevant regulations to strictly control these two contents.
As for the several color fastness indexes listed, whether at home or abroad, they must be tested for dyed textiles. Although there is no direct evidence to prove that color fastness and human health and safety have an inevitable causal relationship, good color fastness can undoubtedly minimize the possible harm to human health due to dyes falling off and transferring
Printing and dyeing companies use "film" to reduce emissions
Physicochemical and biochemical treatments are reclaimed water reuse technologies widely used by printing and dyeing enterprises in our county, and the average treatment cost per ton is between 1.5 yuan and 2 yuan. But for the same treatment of one ton of printing and dyeing wastewater, the cost of membrane treatment technology is as high as 4.6 yuan. The operators of Shaoxing printing and dyeing enterprises, who have always been known for their shrewdness, are now happy to do this "losing business" and have launched printing and dyeing wastewater membrane treatment technology projects, which have become a new bright spot in the industry.
film technology is highly sought after
In the "Shengxin Printing and Dyeing" of Binhai Industrial Zone, in addition to the busy workshop in the workshop, the construction workers are stepping up the installation of new equipment in the scorching sun over 1,000 square meters of open space in the factory. "This is a new reclaimed water reuse technology-membrane treatment technology." The operator of Shengxin Printing and Dyeing Company said that the whole set of equipment is expected to be put into use at the end of August.
Within three months, five printing and dyeing companies including "Sumeite" and "Belleheng" have successively signed membrane treatment technology cooperation agreements with Ningbo Branch of Ordnance Research Institute. "Shaoxing printing and dyeing enterprises are very interested in membrane treatment technology and the use of "third-party" management cooperation methods. In addition to these five companies, many companies have actively contacted us for consultation and negotiation." Ningbo Branch of the Ordnance Research Institute Zhou Yusong of Shaoxing revealed that due to the sharp increase in business in Shaoxing, they have rented office space in the Binhai Industrial Zone and are preparing to set up an office to meet business development needs.
In addition to cooperating with the Ningbo Branch of the Ordnance Science and Technology Research Institute, many printing and dyeing companies have also introduced foreign advanced membrane treatment technologies. For example, "Zhiren Printing and Dyeing" invested 8 million yuan to expand and transform the printing and dyeing wastewater treatment system and the advanced treatment of reclaimed water. The reverse osmosis membrane technology produced by the Dow Company of the United States is adopted, and it is planned to be put into use in September.
Emission reduction and water saving double effect
Why are so many printing and dyeing companies enthusiastic about membrane technology? "After 3000 tons of pre-treated wastewater is treated by membrane, 2000 tons will directly become clean water." After Zhang Guohua, the operator of Shumet Printing and Dyeing Company, visited Suzhou, Ningbo and other places, he finally decided to adopt membrane. Processing technology. He told reporters that the technology meets the requirements of energy saving and emission reduction, and that this technology is "only earning but not losing."
Take the wastewater membrane treatment technology project currently being launched by "Shengxin Printing and Dyeing" as an example. After treatment, the COD concentration in the clean water dropped to less than 50mg/L, while the COD concentration in the river water reached about 100mg/L, which can be reused in the enterprise. Industrial water. Calculated based on the price of industrial water at 1.15 yuan per ton, the average cost of wastewater pretreatment is more than 2.8 yuan per ton. Regardless of labor and other management costs, the cost of 1 ton of water is definitely higher than 4 yuan, and membrane treatment technology not only allows its discharge Reduced by 2/3, the effect of emission reduction and water saving is obvious. To this end, "Shengxin Printing and Dyeing" plans to launch the second phase of membrane treatment technology. By then, the company's emissions will be greatly reduced, achieving the goal of energy saving and emission reduction.
Emission reduction is the driving force
"In addition to the remarkable effects of emission reduction and water saving, the pressure of environmental protection and emission reduction is also one of the driving forces that force printing and dyeing enterprises to actively seek wastewater treatment upgrades." said the relevant person in charge of the county environmental protection bureau. Since last year, our county has taken a series of major measures to fight pollution with an iron hand, such as the implementation of special clean-up actions for the construction projects of the printing and dyeing chemical industry, and the “last elimination” system for printing and dyeing enterprises in which sewage exceeds the standard. This year, our county has imposed a "tightening curse" on excessive sewage from printing and dyeing enterprises, that is, the last pollutant pollutant discharge test per month is eliminated a
Printing and dyeing emission reduction: early upgrade and early initiative
Recently, the Shaoxing Municipal Environmental Protection Bureau issued the "Notice on Adjusting the Wastewater Discharge Standards of Industrial Enterprises in the Urban Area", requiring that from July 1 next year, all industrial wastewater included in Shaoxing Water Treatment Development Co., Ltd. in the urban area will be unified Fully implement the third-level standard of the "Integrated Wastewater Discharge Standard", that is, the chemical oxygen demand (COD) nanotube concentration must be controlled below 500 mg per liter.
Although the target of the notice is enterprises in the urban area of Shaoxing, the notice still makes the operators of printing and dyeing enterprises in Shaoxing County nervous. Industry insiders believe that it will be a matter of time before Shaoxing County implements this emission standard, which will make the life of printing and dyeing companies that are already worrying about emissions and standards more difficult.
Since the beginning of this year, Shaoxing County printing and dyeing enterprises have also faced unprecedented pressure to reduce emissions after experiencing labor shortages and power shortages. The city government issued a total of 540,000 tons of sewage per day to Shaoxing County, which also includes the discharge of domestic sewage. At the time when the county's sewage discharge was the largest, it reached 780,000 tons per day. Affected by this, the operating rate of many printing and dyeing enterprises in Shaoxing County is less than 70%.
The boss of a printing and dyeing company in Lizhu Town introduced that due to the total amount of pollution control, the company currently has one-third of the equipment idle and dare not accept business. Regarding the future development, the boss is very contradictory: he holds a glimmer of hope and believes that textile is the pillar industry of our county. Printing and dyeing also plays a role in the textile industry. The government will not turn a blind eye to the difficulties of enterprises. As long as this period of time has passed, the government may shed light on the emissions of printing and dyeing enterprises, so that the current equipment can be used again; and they are afraid that the government will continue to increase the pressure to reduce emissions. If enterprises do not implement technological reforms early, they will Lose the market.
The mentality of the boss of the printing and dyeing company in Lizhu Town is actually a common mentality among the managers of many printing and dyeing companies in Shaoxing County. However, it is clear that the pressure to reduce emissions will only increase. In the past, printing and dyeing companies were allowed to discharge sewage at will, and later they had to be discharged through pipes. Later, the quantity and quality of sewage were required. Especially since last year, Shaoxing County has adopted a series of iron-fisted pollution control measures, such as the implementation of special clean-up actions for construction projects in the printing and dyeing chemical industry, and the “final elimination” system for printing and dyeing enterprises in which sewage exceeds the standard. This year, Shaoxing County again chanted a "tightening curse" for printing and dyeing enterprises' sewage exceeding the standard, and forcing the discharge valves of printing and dyeing enterprises that discharge excessive amounts of sewage to be closed according to law.
In the face of increasingly stringent emission reduction policies and measures, industry insiders pointed out that hesitating is the best way out. An early upgrade is the best way out. Shaoxing County started the agglomeration and upgrading of its printing and dyeing industry since last year. In 5 years, 80% of the printing and dyeing enterprises in the county will be gathered in Binhai Industrial Zone. At present, 41 printing and dyeing enterprises have settled in Binhai Industrial Zone, and 96 enterprises have signed contracts to settle this year. After the 137 printing and dyeing enterprises are assembled, they will account for almost 80% of the county's printing and dyeing production capacity, which will undoubtedly strongly promote the upgrading of the industry. At the same time, Shaoxing County's printing and dyeing industry is also actively eliminating outdated production capacity. Last year, Shaoxing County completed 710 million meters of backward printing and dyeing capacity. This year, our county will also eliminate 500 million meters of backward printing and dyeing capacity.
It is gratifying that, under severe pressure to reduce emissions, some printing and dyeing enterprises in Shaoxing County are actively taking measures to reduce emissions. Five printing and dyeing companies, including Shengxin Printing and Dyeing, Shumeite Printing and Dyeing, and Belle Heng Printing and Dyeing, in Binhai Industrial Zone have introduced new reclaimed water reuse and transformation technology-membrane
Spring after printing and dyeing
The 8th Runhe Cup National Symposium on Finishing after Printing and Dyeing hosted by China Textile Engineering Society will be held in Shaoxing, Zhejiang on March 8.
This is a major event in the printing and dyeing industry, and it is also a good opportunity for many printing and dyeing companies to seek improvement, energy saving, emission reduction and low-carbon development.
Innovation, enterprising and continuous challenge
In recent years, the textile printing and dyeing industry has faced the opportunities and challenges under the new situation, and has been brave to innovate and keep making progress. It has achieved new results in new technologies, new equipment, new processes, new products, and new auxiliaries after printing and dyeing. And progress.
There is no doubt that the printing and dyeing industry has seized the opportunity to pick up and handed over a good report card in the past year, but it will take more efforts to continue this achievement.
The purpose of holding a national academic seminar on finishing after printing and dyeing is to build a platform for new achievements and information exchange in finishing after printing and dyeing. It is the organizer's greatest wish to further promote the development of new technologies, new equipment, new processes, new products, and new auxiliaries in my country's printing and dyeing finishing.
From the perspective of the main content involved in the seminars and exchanges of the conference, it covers finishing process technology, finishing agent preparation and application, and special interactive seminars.
In this seminar, Chen Liqiu, head of the Mechatronics Group of the Chinese Textile Engineering Society, will bring about energy-saving measures for finishing equipment, Gu Hao, deputy director of Jiangsu Textile Engineering Society, on the new development of textile multi-functional composite finishing, Professor Wang Shugen of Jiangnan University Regarding issues related to the development of functional textiles, Dr. Xiao Hong from the General Military Equipment Research Institute on issues related to sanitary finishing, Ningbo Runhe Chemical Industry Co., Ltd. on the application of new silicone oils in textile finishing, Shijiazhuang Federal Kete Chemical Co., Ltd. The characteristics and application practice of new concept silicones, Shandong Yuyue Home Textile Co., Ltd.'s application of aloe finishing technology in the functional finishing of household textile products, Xia Jianming, deputy dean of Zhejiang Textile and Garment Vocational Technical College, on textile finishing auxiliaries worth developing, etc. Wait. The introduction of these technologies will improve the production performance of more printing and dyeing enterprises, thereby better promoting energy conservation and emission reduction.
In the seminars and exchanges on the preparation and application of finishing agents, two new technologies will be shared with participants: microencapsulated finishing agents (including the microencapsulation of spices, Chinese medicine extracts and other plant extracts) for textile fragrance finishing and repellent Anti-mosquito finishing, antibacterial finishing, etc.) R&D and application, as well as the development and application of nanomaterials and technologies, and the application in finishing processing
The development and application of other new finishing technologies, the functional application of fiber materials and their finishing processing technology, the energy saving and consumption reduction related to finishing technology, environmental protection, the substitution of banned chemicals and the application of information technology are all related to the survival of printing and dyeing enterprises. The topic will become the focus of attention of the participants.
In the third session of thematic interactive discussion, the latest developments in finishing technology to improve product quality and added value in the dyeing and finishing industry, the development direction of finishing technology in the dyeing and finishing industry, and finishing and multifunctional finishing agents for printing and dyeing products, industrial textiles New technologies and product development directions may become active topics in the seminar. Many projects of this academic seminar are expected by more people-this will be a concentrated display of the scientific research results in the past two years after printing and dyeing.
Good technology should come to life
Recalling that since the "Sixth National Symposium on Post-Dyeing and Finishing" was held, the Dyeing and Finishing Professional Committees of the Textile Engineering Society of various provinces, cities and autonomous regions across the country have done a lot of work and organized various forms of academic exchanges and promotion activities. Enterprises, universities and research institutes have made great progress in the development and application
China's printing and dyeing industry moves from lagging to leading
The printing and dyeing and finishing equipment of fabrics lags behind in the entire textile industry. The reason is that the printing and dyeing and finishing process technology and equipment of fabrics have been in a lagging state for a long time, and there are also some objective difficulties that are difficult to solve. First, there are many processes for dyeing and finishing and finishing of fabrics, including mercerizing, sizing, batik, corrugating, calendering, napping, stone washing, washing, raising, folding and creasing, etc. The technology is more complicated, and the influencing factors and There are many links, and the quality factors of printing and dyeing process, management and personnel also have a certain influence. The second is that printing and dyeing fabrics are closer to the market and consumers. The transient changes in the market and consumption, the variety of fabrics and colors must keep up, and the lag and need of process technology and mechanical equipment will also be long-term. If handled well, the lag interval The cycle may be shortened.
In this context, as early as November 26, 1997, the former China National Textile and Apparel Council reported to the State Economic and Trade Commission a proposal for the establishment of the "New Dyeing and Finishing Equipment and Process Technology One-stop" project. This project was supported by the state, and the State Economic and Trade Commission commissioned China International Engineering Consulting Corporation to conduct an evaluation in February 1998. Then, China International Engineering Consulting Corporation organized relevant departments and experts to conduct investigations on printing and dyeing enterprises in Zhejiang, Shanghai, Jiangsu and other places, as well as textile machinery enterprises in Shanghai, Jiangsu, Zhejiang, Hunan, Hubei and other places, and in July 1998 Demonstration meetings were held successively and a demonstration evaluation report was written. The China National Textile and Apparel Council prepared a supplementary report on the project based on the demonstration. The State Economic and Trade Commission soon officially approved the implementation of the project.
The proposal and the main content of the project are based on the key and weak links of the printing and dyeing and finishing process technology at that time, and determine the high-efficiency steaming box, de-boiling and bleaching machine, pre-shrinking finishing machine, and heat setting machine in the new cotton and polyester-cotton dyeing and finishing equipment. , Servo-driven flat screen printing machine, magnetic bar type rotary screen printing machine, intermittent dyeing machine, automatic color mixing system and other special projects. Refining machine, creping machine, alkali reducing machine, loose washing and drying machine in synthetic fabric printing and dyeing equipment. The cloth guide roller, rubber roller, edge suction device and weft straightening device in general parts and general devices.
During the research and implementation of this project, the policy of combining production, education, research and application has been implemented. Technological testing and collaboration units are listed separately in the project, including China Textile University, China Textile Research Institute, and Changzhou Printing and Dyeing Machinery Experimental Center and other academic research and experimental units. At the same time, it also considers the use of supporting units after the successful development of printing and dyeing machinery and equipment, including the technical transformation of enterprises that produce cotton, polyester cotton, and apparel fabrics, and the production of chemical fiber simulation fabrics.
According to the company’s conditions and original division of labor, Huangshi Textile Machinery Factory is responsible for the high-efficiency desizing pre-treatment machine, continuous pad dyeing machine, hot-melt dyeing machine and magnetic rod type rotary screen. Printing machine. Zhengzhou Textile Machinery Factory is responsible for the pre-shrinking finishing machine, Shaoyang Second Textile Machinery Factory is responsible for the heat setting machine, roll dyeing machine, open width loose refiner and flat width loose alkali reducer, and Shanghai Printing and Dyeing Machinery Factory is responsible for the de-boiling and bleaching machine The flat screen printing machine with servo drive and the large-capacity jigger are undertaken by mainframe manufacturers such as Hangzhou Dyeing and Finishing Machinery Equipment Company, and the automatic pulping system is produced by Shenyang Second Textile Machinery Factory. The cloth guide rollers for general parts and special basic parts for textile machinery are respectively undertaken by Huangshi Textile Machinery Kunshan Branch. The rubber roller is undertaken by Wuxi Second Rubber Co., Ltd. The electric and pneumatic edge suction device and the photoel
Printing and dyeing industry: the key to sustainable development
In a day and a half, there were more than 60 papers and 25 special reports; the listeners in the venue were attentive, and the representatives outside the venue exchanged actively and enthusiastically-this was the scene at the 8th Printing and Dyeing Finishing Seminar.
It is not difficult to find at the conference that my country's printing and dyeing finishing technology has made significant progress in recent years. At the same time, the implementation of various ecological environmental protection standards and new industry access conditions has higher requirements for the extension of finishing technology. Various printing and dyeing enterprises have accumulated rich practical experience and scientific and technological achievements in scientific research, production, and auxiliary agent development for finishing technology.
What are the key issues that printing and dyeing companies are paying attention to? What are the most difficult problems that printing and dyeing companies need to overcome? What new finishing technologies can be applied in future production? With these problems, the reporter tried to listen and listen Analyze and hope to get answers to questions through this high-level dialogue between experts.
pay more attention to: the key points of the sustainable development of the printing and dyeing industry
The problems facing the development of the industry and the technical route of sustainable development are one of the hot spots that printing and dyeing enterprises pay more attention to.
The establishment of a printing and dyeing (chemical) industrial park, the use of advanced equipment with a high degree of automation, low energy consumption, and less pollution, and the use of sustainable new technologies and new processes are the key points for the sustainable development of the printing and dyeing industry in the future.
The report "A Preliminary Study on the Sustainable Development of Printing and Dyeing Industry" by Wang Jiyong, director of the Printing and Dyeing Professional Committee, attracted great attention from the participants.
From the overall situation of the textile industry, the dyeing and finishing industry is still a bottleneck in the development of the textile industry. This is mainly because my country does not have enough resources to support the backward, high-energy-consuming dyeing and finishing production methods, and there is insufficient environmental capacity to carry the highly polluting production methods. To this end, to maximize the control of the consumption of non-renewable resources, reduce waste emissions in the production process, energy conservation, emission reduction, and environmental protection will become the main goals of future production and technological development, as well as the key to sustainable economic development. Under this circumstance, how can the printing and dyeing industry achieve sustainable development? Wang Jiyong talked about several views: establishing a printing and dyeing (chemical) industrial park, adopting advanced equipment with high degree of automation, low energy consumption and less pollution, and adopting sustainable development New technologies and new processes are the key points for the sustainable development of the printing and dyeing industry in the future.
Regarding his own point of view, he suggested that steam can be used to generate electricity first, and then the steam can be used for printing and dyeing production, which is equivalent to using energy twice. At the same time, printing and dyeing manufacturing costs can be reduced. The steam after power generation does not need to be cooled directly to the printing and dyeing factory, which can save the cost of steam cooling. At the same time, the steam after power generation has no cost, which can greatly reduce the energy cost of manufacturing printing and dyeing products. In terms of reducing the cost of wastewater treatment, Wang Jiyong suggested that the wastewater from the printing and dyeing plant should be filtered through waste slag for simple treatment before it is discharged into the sewage treatment plant, which can remove part of the color, reduce the pH value of the wastewater, and remove most of the suspended solids before further treatment. , Can greatly reduce printing and dyeing wastewater treatment costs.
In the future, the printing and dyeing wastewater in the park will be combined with a combination of decentralization and centralized treatment. It is proposed that the government must require printing and dyeing enterprises to achieve clear turbidity and diversion. Recyclable wastewater should be used in production. Do not wait for wastewater treatment before recycling. This will not only reduce the final The amount of sewage processed can reduce the cost of water utilization and reduce the difficulty of the final sewage. Such pertinent and practical suggestions deserve the attention of government depart
