1. Low Liquor Ratio Design
The J-type dyeing machine utilizes a low liquor ratio design, reaching a liquor ratio of 1:4.5 to 1:6, significantly reducing the amount of water required during the dyeing process. Compared to traditional overflow dyeing machines with high liquor ratios (above 1:8), the J-type dyeing machine can save approximately 50% to 60% in water and wastewater discharge. This design not only reduces production costs but also reduces wastewater discharge, complying with environmental requirements.
2. Improved Washing Process
The J-type dyeing machine utilizes an improved washing process. By staggering water intake and washing, the traditional "shower" washing process is transformed into a "bath" with staggered water intake and washing, achieving significant water conservation. This washing method not only reduces water consumption but also improves water utilization efficiency, further reducing wastewater discharge.
3. Wastewater Reuse
The J-type dyeing machine utilizes heat recovery technology to recycle the significant amount of waste heat from the high-temperature setting and discharge of the grey fabric and from the wastewater produced during production, saving energy. In addition, equipment cooling water and steam condensate are collected and reused in printing and dyeing operations, further reducing wastewater discharge.
4. Environmentally Friendly Chemicals
When purchasing the J-type dyeing machine, biodegradable slurries were considered, avoiding non-biodegradable slurries such as polyvinyl alcohol and opting for environmentally friendly slurries. This not only reduces pollutants in wastewater but also reduces the difficulty and cost of wastewater treatment.
5. Practical Application Results
A J-type overflow dyeing machine at a printing and dyeing machinery company in Shishi City uses heat recovery technology, reducing energy consumption by 30% and wastewater discharge by 50% compared to traditional equipment. This demonstrates that the J-type dyeing machine can significantly reduce wastewater discharge and energy consumption in practice, aligning with the national "dual carbon" strategy.
