Removal Of The Textile Printing And Dyeing Vocs This "Thorns" Exhaust Gas Treatment Needs Several Steps.

October 21st 0 points, 2019 "double eleven" activities open for sale, according to Alibaba partner, Tmall and Taobao President Jiang Fan introduced, opened the day there are 100 million users to participate.

Across the screen can feel full of "shopping Carnival" breath. Many brand products have appeared. This time, more than 10 million discount products have been involved in the activity. The first released new products account for 1/10 of the products, which have escaped 618 and 818. This time, I am afraid I have to "cut my hands".

The sales volume of clothing will increase sharply as the season changes. When you add a payment cart for "shopping cart", textile and dyeing enterprises are busy working overtime, and the waste gas generated is also a "thorn" that needs to be pulled out in the air pollution control.

In particular, VOCs emissions have long been reported that textile printing and dyeing accounts for more than 30% of VOCs emissions from industrial processes. Therefore, textile printing and dyeing industry is considered to be one of the key industries of air pollution industrial sources. With the improvement of clothing materials, colors and manufacturing processes, the composition of exhaust gases is becoming more and more complex.

The industry summarizes the two sources of textile printing and dyeing waste gas, namely printing and dyeing pretreatment and functional post processing and printing waste gas, including singeing, heat setting, dyeing, yellowing, microfiber process, etc. printing section because of the three benzene and other pollution factors in the coating, is considered to be the largest source of VOCs in textile dyeing and printing.

In recent years, China has done a lot of efforts in promoting green textile printing and dyeing. From 2011 to 2017, in the six years, the relevant departments have issued more than 10 environmental protection policies, and put forward specific requirements for production technology, production equipment, emission standards and daily monitoring.

In view of the two sources, different ways of governance have been explored. For example, in the treatment of heat setting agents, electrostatic collection, scrubbing and catalytic combustion are mostly used. For the printing section, regenerative thermal oxidation and adsorption catalytic combustion are commonly used methods.

However, there is no national level of emission standards and so on, which is a major problem in the air pollution control of textile printing and dyeing, and the management of technology and technology needs to be standardized. Driven by the blue sky battle, the lack of specialized, targeted standards, processing plans and monitoring will be filled in the textile and dyeing industry.

Enterprise concentration is another feature of the printing and dyeing industry. Zhejiang, Jiangsu, Shandong, Guangdong and Fujian are the five main production areas of printing and dyeing in China. According to the information, Zhejiang has further developed its textile and dyeing and printing control system, and has promulgated the emission standard for air pollutants in textile dyeing and finishing industry and Shaoxing city's "speeding up the printing and dyeing industry to promote the optimization of the ecological environment".

It can be seen that the treatment of textile printing and dyeing waste gas in concentrated areas still needs to be strengthened. On the other hand, this may become a breakthrough in the treatment of textile printing and dyeing waste gas. From the centralized field, it will slowly spread to other parts of the country, and learn from the experience of the five governments to speed up the textile printing and dyeing waste gas treatment.

In addition, we should also pay attention to the waste gas treatment in textile printing and dyeing wastewater treatment process, reduce its harm to the surrounding environment. Resource utilization is a means to reduce costs, converting high temperature waste gas into hot water recycling and so economic treatment will be more popular.

These relevant indicators may be involved in the national standards of emission standards for air pollutants in textile printing and dyeing industry soon released, and will promote a new round of shuffling of textile printing and dyeing industry to achieve "zero emissions" and "zero pollution" of industrial enterprises.