Textile Wastewater Zero Discharge Technology To Accelerate The Promotion, "Light The Future" Promotional Activities Into Changshu

With the increasingly stringent environmental protection policy, the textile printing and dyeing industry is facing great challenges. Printing and dyeing has become a bottleneck for the sustainable development of the textile industry, and also a pain point for the development of the industry.

To solve the problem of textile printing and dyeing wastewater efficiently and economically is an urgent task to realize the green and sustainable development of textile industry.

From the current status of related processing technology and the prospect of industry development, the green ecological development of printing and dyeing industry is becoming a trend.

Over the years, the textile industry has constantly developed printing and dyeing wastewater treatment technology and anhydrous (less water) printing and dyeing technology. Many outstanding technological achievements have emerged. In order to promote the pformation of scientific and technological achievements in textile industry, promote the development and application of printing and dyeing wastewater treatment technology and water free (less water) printing and dyeing technology in textile industry, the pformation and upgrading of textile industry and sustainable development are realized.

In March 28th, it was hosted by China Textile planning and Research Association, China Textile Industry Federation industry development department, Changshou City industrial and Information Bureau, Changshou City textile and Garment Association and Changshou City printing and dyeing chamber.

It was held in Changshou City, Jiangsu.

The meeting has been supported by Shanghai Xi sun Environmental Technology Co., Ltd., Zhangjiagang Sunday dyeing and Finishing Technology Co., Ltd., Jiangsu hi-tech Limited by Share Ltd, and Changzhou anda Environmental Protection Technology Co., Ltd.

Yang Donghui, vice president of the China Textile Industry Federation, adviser to the China Textile Industry Federation environmental protection and resource conservation promotion committee, vice secretary general of China Textile Federation, director of the Ministry of industry development, and President of the China Textile Planning Research Association, Li Jincai,

Executive chairman, Feng Dehu, President of China Textile Construction Planning Institute, He Huaqin, Secretary General of China Knitting Industry Association, Xu Haidong, vice mayor of Changshou City government, Lu Yunhe, deputy director of the office of high quality development committee of Changshou City printing and dyeing, Lu Yunhe Jia Peng, chief engineer of Changshou City Environmental Protection Bureau, Secretary General of Changshou City textile and Garment Association, director of Yin Jinhua, Changshou City printing and dyeing chamber of Commerce, Yin Jinhua and other representatives, and more than 100 representatives of dyeing and printing enterprises attended the meeting.

The meeting was presided over by Feng Dehu, executive director of China Textile Planning Research Association and President of China Textile Construction Planning Institute.

One

Labels for printing and dyeing should not be contaminated.

It's "ecology".

Xu Haidong, vice mayor of Changshou City

In his speech, at present, the environmental protection problem of Changshu textile printing and dyeing enterprises is prominent, which restricts the development of the industry, and also affects the construction of ecological civilization. The printing and dyeing industry is in a critical period of high quality development.

He hoped that Changshu printing and dyeing enterprises should actively graft new technologies through this activity, so as to realize zero discharge and less discharge of waste water and jointly ignite the future of high quality development of printing and dyeing industry.

Yang Donghui, former vice chairman of China Textile Industry Federation and consultant of environmental protection and resource conservation Promotion Committee of China Textile Industry Federation

In his speech, as a global textile processing and manufacturing country, printing and dyeing processing is an indispensable intermediate industry in textile manufacturing industry in China's entire textile and garment manufacturing industry chain.

How to change the impression of high emission and high content of harmful substances in textile printing and dyeing wastewater, and how to effectively deal with the printing and dyeing wastewater and reduce the amount and concentration of wastewater discharge, which is consistent with the requirements of national environmental protection management, has always been an important topic for the industry to solve.

Textile printing and dyeing wastewater treatment is related to the healthy and sustainable development of the industry.

This work is not only a matter of the environmental protection industry, but also a responsibility of the textile industry.

If this problem is not solved, it will restrict the development of the printing and dyeing industry itself and even the entire textile industry.

To realize the recycling of printing and dyeing water resources, energy conservation and emission reduction requires support from all sectors, and requires concerted efforts from the whole industry.

Li Jincai, Deputy Secretary General of China Textile Corporation and director of Industry Development Department

The economic operation analysis of the textile industry in 2018 was made for the conference.

In his report, he pointed out that 2018 is the 40th anniversary of reform and opening up.

For China's textile industry, 2018 is a year full of challenges and challenges and rapid changes.

Faced with the complex and changeable international situation and the pressure of structural adjustment in China, China's textile industry has played a positive role in stabilizing employment, stabilizing finance, stabilizing foreign trade, stabilizing investment and stabilizing expectations, and has become the backbone of maintaining stable economic operation.

Judging from the annual economic performance of China's textile industry in 2018, the domestic and foreign markets of textiles and clothing have performed well. The growth rate of industrial added value of textile enterprises above the national scale has increased at a low level, the quality and efficiency of the whole industry has been continuously improved, and the growth rate of whole industry investment has continued to rise, and the main indicators have been running smoothly.

The prosperity of enterprises is relatively stable, and the characteristics of high quality development are gradually emerging.

Xi Danli, Professor of Donghua University

A special speech on "ecological printing and dyeing and natural environment friendly printing and dyeing industry" was made.

He also combined with his research and development team to promote the application of "rare metal catalytic oxidation", "nano aeration rods" and other core technology and complete sets of technology, equipment and engineering applications, and analyzed the printing and dyeing industry to solve the environmental problems and realize the development trend of green ecological technology.

He said that changing the traditional concept of industrial waste water turbidity and diversion, sub quality treatment, the use of quality is an inevitable trend, as far as possible for resource reuse.

Practice has proved that changing the original way of thinking is the key to change the mode. With the idea of Puxi environmental management, design plan and core technology, printing and dyeing wastewater can be used to recycle 85-92% waste water after being cleaned up and separated by separate treatment. Besides, less investment and less operation cost will be achieved in the construction and pformation of the printing and dyeing wastewater, which will cover about 50%-60% of the traditional method.

The running cost of all printing and dyeing wastewater zero discharge is about 10 yuan / ton, which is even or even lower than the current processing cost.

After deducting the cost of reusing water, the actual cost is only 7-8 yuan / ton.

It can realize ecological printing and dyeing, energy saving and emission reduction.

The whole industry implements ecological printing and dyeing technology. It is estimated that 480 thousand tons of wastewater will be discharged every day, and 1.6 hundred million tons of waste water will be discharged every year (excluding reconstruction). The COD emission reduction will be about 720 tons per day, and the annual emission reduction of COD will be about 23700 tons, resulting in great environmental benefits.

Xi Dan Li also believes that after the treatment of waste water and waste gas, solid waste management will surely become the focus. At present, the amount of sludge produced by textile printing and dyeing is 5 million 500 thousand tons / year. Generally, the methods of incineration, landfill and brick making are all used. However, there are limitations. Only by making full use of the organic matter in the sludge and converting it into useful material can we achieve the ecological cycle.

Xi Dan Li finally gave a definition of "ecological printing and dyeing": when printing and dyeing wastewater was treated and recycled, waste water reached zero discharge; most of the waste gas was recovered; sludge ecological utilization; mixed salt reuse.

Achieve the water cycle, gas circulation, material cycle, in the environment to achieve a perfect cycle, the entire printing and dyeing industry chain and the natural cycle of integration, that is, "ecological printing and dyeing".

Two

Four technologies for zero discharge of waste water

Industrialization has been realized

In the special report on zero emission technology of the conference, 4 enterprises respectively introduced their own achievements in realizing zero discharge of waste water from aspects of production technology, dyeing technology, new materials and equipment.

Zero discharge process of textile printing and dyeing wastewater

Founded in 1997, Jiangsu hi-tech Limited by Share Ltd has devoted itself to the research and application of membrane separation technology, which is the core of separation membrane. Based on this, it provides a systematic solution for the integration of membrane technology in the field of water treatment and industrial process separation.

It is currently the largest leading enterprise in China with independent intellectual property rights.

During the five years, they helped textile, printing, dyeing, chemical and papermaking enterprises successfully solve more than 30 projects of zero discharge of waste water, including 7 successful cases of textile printing and dyeing zero discharge projects.

Wang Peng, the sales manager of the company, introduced the technology characteristics and engineering application of Jiu Wu hi tech zero discharge technology for printing and dyeing wastewater in the special report of "zero discharge process of textile printing and dyeing wastewater".

New type of yarn with no water discharge and multi color

Key technologies for continuous coating dyeing

Zhangjiagang Suntory dyeing and Finishing Technology Co., Ltd. was originally a traditional dyeing enterprise. It began pformation and upgrading in 2008. Now it has become a research and development enterprise of yarn dyeing with its own core technology.

For the first time in China, the zero discharge of the whole process of yarn dyeing has been realized. At the same time, conventional dyeing and fancy dyeing have been integrated to open the infinite space for creative design.

Li Rulong, deputy general manager of the company, introduced the new green low carbon dyeing technology, the key technology of continuous dyeing and dyeing of new yarn with micro water, zero discharge and multi coloring.

For the first time, corona and ultrasonic waves were applied to yarn dyeing. The technology of corona modification and ultrasonic cationic modification was developed and applied in combination. Through the systematic research of auxiliaries, processes, machinery and electricity, and the innovation of the whole process of pretreatment, dyeing, pasting and baking, the new dyeing process and complete set of equipment were successfully developed. On this basis, the continuous dyeing and spraying process and equipment of yarn were further developed and integrated with continuous pad dyeing.

The production process of the technology is green and low carbon, and the produced trace waste water is completely reused after processing, thus achieving zero discharge of the whole process of yarn dyeing.

Technology and equipment for printing and dyeing without water

Traditional printing and dyeing produces 50 tons of waste water per ton of cloth, consumes 4 tons of steam and consumes electricity 400 degrees. Changzhou anda Environmental Technology Co., Ltd. has developed polymer nano water free printing and dyeing, does not produce three wastes, and reduces artificial 2/3.

The technology not only improves the production efficiency, but also meets the market requirements. It also solves the problems of traditional dyeing, heavy pollution and large consumption, and the processing cost of production is also greatly reduced than that of traditional similar products, and has achieved obvious economic and social benefits.

Zhuang Jiafeng, CEO of the company, made a keynote speech on the development and application of the technology and equipment of nano waterless printing and dyeing of polyester fabrics independently developed by the company.

The new technology consists of advanced core technologies, such as polymer sub nano scale printing paste, multi-dimensional ultra low liquid feed roller, and so on.

At present, the project has successfully completed the pilot, pilot and industrial experiments, and achieved large-scale production of 2000 tons of polyester printing and dyeing products.

New textile printing technology and energy saving and environmental protection

Joint research project of production technology

Zhejiang MEG machinery Limited by Share Ltd is a professional intelligent, automatic, functional and practical series of intaglio printing machine production and sales of high-tech enterprises.

Chairman Liu Guo introduced the company's new technology in textile printing and energy saving and environmental protection production process.

The technology uses water-based printing ink to achieve three major innovations.

One is the pfer printing series, which adopts waterborne ink to achieve waterless printing through two pfer modes of heat and normal temperature, improving product quality and achieving environmental requirements.

Two, the direct printing of single and double sides adopts two kinds of pformation and upgrading of gravure printing and double-sided printing, and magnetic roller type rotary screen printing. It achieves the goal of saving water, water and water, improving printing quality and adding fancy varieties.

The three is the high speed printing process with pfer paper and pfer film printing and concave number integrated machine.

After the technical report, delegates attended the meeting.

and

Visit and understand the application effect and engineering construction of zero emission and low emission technology projects.

Organizers of the event.

In an interview with reporters, the Changshu zero emission promotion conference was the second stop of Shaoxing zero emission promotion campaign at the end of last year.

In the past two years, the "zero discharge of printing and dyeing" has always been listed as the top priority in the key development and promotion projects of the China Textile Planning Research Institute.

"Printing and dyeing zero discharge" from the technical point of view, mainly printing and dyeing wastewater treatment and printing and dyeing (water dyeing) these two development directions.

There are mainly two kinds of projects in this promotion, one is terminal processing, the other is source control.

Most of these technologies can enable enterprises to effectively discharge zero discharge of industrial waste water in printing and dyeing enterprises, save water resources and reduce energy consumption without increasing or increasing the cost of processing operation or spending less on the original treatment facilities.

Through this activity, the technical concept of zero discharge and zero discharge of textile printing and dyeing wastewater has been publicized and promoted. It will play an exemplary role in the future recycling of water resources and energy conservation and emission reduction in the printing and dyeing industry.