Details Description

For textile printing and dyeing wastewater, we provide printing and dyeing wastewater treatment and recycling solutions. The system uses catalytic electrolysis, electrolytic acidification/SBR, and MBR biofilm reactors to treat printing and dyeing wastewater. The recycled water obtained by this process can be reused in the front-end processes such as desizing, boiling, rinsing, and silk polishing, and mixed with fresh water for the back-end processes. The operation process is simple and automated, providing strong technical support for energy conservation and emission reduction in the printing and dyeing industry.

Printing and dyeing wastewater is the wastewater discharged from printing and dyeing factories that mainly process cotton, linen, chemical fibers, and their blended products. The amount of printing and dyeing wastewater is relatively large, with 100-200 tons of water consumed for every ton of textile processed, of which 80-90% becomes wastewater. The wastewater discharge and total pollutant emissions of the printing and dyeing industry rank second and fourth respectively among the national industrial sectors. With the rapid development of the dye industry, new additives, dyes, finishing agents, etc. are widely used in the printing and dyeing industry, and the content of difficult to degrade toxic organic components is also increasing. Wastewater must be deeply treated before reuse. In order to achieve sustainable development of the printing and dyeing industry, vigorously carrying out wastewater reuse is a wise choice based on long-term considerations.

Through long-term research on the comprehensive treatment and recycling of printing and dyeing wastewater, combined with extensive engineering practice, a complete solution for the reuse of printing and dyeing wastewater has been formed. The system adopts catalytic electrolysis, electrolytic acidification/SBR, and MBR biofilm reactor to treat printing and dyeing wastewater. After pretreatment, the wastewater flows into the regulating tank for homogenization of water quality and quantity, and then undergoes physical, chemical, and microelectrolysis reactions to reduce suspended solids; Further biochemical treatment is carried out to degrade organic pollutants through SBR process, and the effluent is treated in MBR membrane bioreactor to meet the requirements of discharge or reuse.

Based on the actual situation of the customer, this process is adjusted according to the specific production products, dyes, additives, processes, and sewage treatment plant treatment processes of the printing and dyeing factory. The recycling treatment process and technology are reliable and stable, and the quality of the recycled water meets the factory's water standards, providing strong technical support for energy conservation and emission reduction in the printing and dyeing industry.

★ Process characteristics:

1. The quality of recycled water is good, and different processes can be used for rinsing or for the entire process of printing and dyeing water.

2. High degree of automation and stable effluent quality.

3. By adopting energy-saving specialized processes, the operating costs are much lower than the sewage and water intake fees, and enterprises can basically achieve a one-year return on investment in the reuse system.

4. Moderate one-time investment and small footprint.

★ Scope of application

1. Printing and dyeing company

2. Textile enterprises

3. Chemical fiber factory