Introduction of Indigo Recovery System
The Indigo Recovery System helps denim dyeing and washing factories recover powder indigo and process water from washing wastewater. The system uses membrane separation technology and online indigo concentration detection to reduce wastewater treatment pressure, improve resource reuse, and support cleaner textile production.
It creates a practical recovery loop where wastewater passes through pretreatment, aeration, separation, water recovery, and indigo recovery. Denim mills can reuse recovered water in the washing and dyeing process while recovering valuable indigo dye.
Note: This system applies only to powder indigo recovery.
Features
The Indigo Recovery System combines smart monitoring, membrane separation, and resource recovery in one efficient solution.
It monitors water quality indexes intelligently to help maintain stable water quality and dyeing performance. The system can recover indigo and water efficiently, helping factories reduce dye loss, water consumption, and end-of-pipe wastewater treatment difficulty.
Key features include:
| Feature | Description |
|---|---|
| Membrane Separation Technology | Separates indigo and water from washing wastewater for reuse. |
| Online Indigo Concentration Detection | Tracks indigo concentration in real time for better process control. |
| Water Recovery | Recovers process water and sends it back for reuse in production. |
| Indigo Recovery | Recovers powder indigo from wastewater and reduces dye waste. |
| Intelligent Water Monitoring | Monitors water quality indexes to support stable dyeing performance. |
| Modular Product Design | Offers different models for different factory capacities. |
| Sustainable Operation | Helps reduce wastewater discharge and supports greener denim production. |
Technical Data
Process Flow
Washing Tank → Pretreatment → Aeration → Separation → Water Recovery → Dyeing Tank Reuse
Separation → Indigo Recovery
Product Models
| Item | Model | Components | Capacity | Installation Size |
| A | A50 | Recovery System | 50 m³/day | 15 m² |
| A | A100 | Recovery System | 100 m³/day | 20 m² |
| A | A200 | Recovery System | 200 m³/day | 40 m² |
| A | A300 | Recovery System | 300 m³/day | 50 m² |
| B | B50 | Connection Tubes + Recovery System | 50 m³/day | 20 m² |
| B | B100 | Connection Tubes + Recovery System | 100 m³/day | 25 m² |
| B | B200 | Connection Tubes + Recovery System | 200 m³/day | 45 m² |
| B | B300 | Connection Tubes + Recovery System | 300 m³/day | 55 m² |
Performance Data
| Data Point | Value |
| Indigo Recovery Rate | 95% or above |
| Water Recovery Rate | 95% or above |
| Recycled Water Pass Rate for Dyeing and Washing | 100% |
| Payback Period | 2–3 years |
| Water Treatment Amount Example | 386.80 tons |
| Running Time Example | 1562 hours |
| Recorded Indigo Recovery Example | 99.6% |
| pH Example | 9.5 |
| ORP Example | 18 mV |
| Applicable Dye Type | Powder Indigo Only |
Why Choose Indigo Recovery System?
Choose the Indigo Recovery System to make denim dyeing cleaner, smarter, and more cost-efficient. The system helps factories recover valuable powder indigo, reuse process water, and reduce wastewater discharge pressure.
- It supports sustainable denim production without making the recovery process complicated. With intelligent monitoring, modular capacity options, and strong recovery performance, factories can improve environmental responsibility while controlling operating costs.
- Main reasons to choose this system:
- The system recovers up to 95% or more indigo and water, helping reduce raw material loss and water consumption.
- It supports near-zero wastewater discharge from dyeing and washing processes, improving environmental performance and corporate image.
- It offers a 2–3 year return on investment, making it a practical solution for modern denim mills.
- Its intelligent monitoring system helps maintain water quality and stable dyeing performance.
- It provides flexible model options from 50 m³/day to 300 m³/day, fitting different production scales.
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