Textile Printing and Dyeing Waste Gas Treatment Technology Solutions

The textile printing and dyeing industry generates a large amount of waste gas during the processing, which not only pollutes the environment but also poses a threat to human health. Therefore, adopting effective waste gas treatment technologies is crucial for the textile printing and dyeing industry. Below are some technical solutions for treating waste gas in textile printing and dyeing.

The textile dyeing and printing industry generates a large amount of waste gas during the processing, which not only pollutes the environment but also poses a threat to human health. Therefore, adopting effective waste gas treatment technologies is crucial for the textile dyeing and printing industry. Here are some technical solutions for treating waste gas in textile dyeing and printing.

1. Activated Carbon Adsorption Method

Activated carbon is commonly used to treat organic pollutants in waste gas from textile dyeing and printing due to its strong adsorption capacity. By adsorbing waste gas, activated carbon can effectively remove odors and harmful substances from the gas.

2. Catalytic Combustion Technology

Catalytic combustion technology is an efficient waste gas treatment method. Under the action of a catalyst, organic substances in the waste gas can be burned at lower temperatures, converting them into carbon dioxide and water. This method not only effectively treats waste gas but also reduces energy consumption.

3. Biological Filter Technology

Biological filter technology is a biological treatment method that decomposes organic substances in waste gas through the action of microorganisms. This method is suitable for treating low-concentration, high-volume waste gas from textile dyeing and printing.

4. Photocatalytic Oxidation Method

The photocatalytic oxidation method utilizes ultraviolet light and catalysts to oxidize and decompose organic substances in waste gas into harmless materials. This method has advantages such as high treatment efficiency and no secondary pollution.

5. Heat Recovery Technology

The waste gas from textile dyeing and printing contains a large amount of heat, which can be recovered and utilized through heat recovery technology, saving energy and reducing waste gas emissions.

6. Comprehensive Treatment Methods

For the complex nature of waste gas from textile dyeing and printing.

Currently, the dyeing and printing industry is undergoing technological innovation, increasing demand, and intensifying market competition. With the recovery of the global economy, the demand for textiles continues to grow, and the dyeing and printing industry, as an important link in the textile industry chain, is also showing a steady development trend.

Current Situation of the Textile Printing and Dyeing Industry

The textile dyeing and printing industry is an important sector that is widely involved and closely connected to people's lives. Currently, with the development of the global economy and the improvement of living standards, the status of the textile dyeing and printing industry is also constantly changing. Below is a brief overview of the current situation in this industry.

Textile Printing and Dyeing Waste Gas Treatment Technology Solutions

The three major processes of dyeing and printing.

The preparation of raw fabric includes raw fabric inspection, re-rolling (by batch, by box, printing), and seam sewing. The purpose of raw fabric inspection is to check the quality of the grey fabric and to address any issues promptly. The inspection content includes physical indicators and appearance defects. Burning off the fluff aims to remove the fluff on the fabric surface, making it smooth and aesthetically pleasing, and to prevent uneven dyeing and printing defects caused by the presence of fluff during dyeing and printing. To facilitate smooth weaving, textile factories often apply sizing to the warp yarn to enhance strength and abrasion resistance. The sizing on the grey fabric affects the fabric's water absorption properties, impacts the quality of dyed and finished products, and increases the consumption of dyeing chemicals. Therefore, the sizing should be removed before boiling and processing, a process known as desizing.

Types and Characteristics of Textile Coating and Finishing

Coating finishing is a common textile post-finishing technique, which generally includes the following methods.

The principle of dyeing

The dyeing process of fiber fabrics generally goes through three stages: surface adsorption, internal diffusion, and dye fixation.