Zero Liquid Discharge System for Textile Dyeing Wastewater Treatment

● Industry: Textile Dyeing

● Core Technology: Integrated process including pretreatment, high-pressure membrane concentration, and evaporation crystallization

● Client Objectives: Achieve complete wastewater recycling, reduce freshwater consumption, and minimize environmental impact on local water bodies

This project involved the design and implementation of a comprehensive zero liquid discharge (ZLD) system for a textile dyeing facility. The solution was developed to address the industry's specific challenges in managing wastewater with complex composition while supporting sustainable water resource management.

Customized Treatment Process

The implemented system features an integrated approach combining:

Advanced pretreatment for initial contaminant removal

High-pressure membrane concentration for water recovery and volume reduction

Evaporation crystallization for final concentrate treatment

Technical Performance

Achieved stable treatment of wastewater characterized by high color, COD, ammonia nitrogen, and heavy metal content

Significant reduction in evaporation load through membrane concentration technology

Produced water quality consistently meets process reuse requirements

System maintains stable operation with manageable operational costs

Operational Outcomes

Enables complete wastewater recycling, eliminating external discharge

Reduces annual freshwater consumption by approximately 200,000 tons

Supports client's environmental compliance and sustainability objectives

Provides a technically and economically viable solution for industrial wastewater management

This project demonstrates the effective application of integrated membrane and evaporation technologies for zero liquid discharge in textile industry wastewater treatment. The successful implementation provides a replicable model for industrial wastewater recycling, showcasing how advanced water treatment technologies can support both environmental protection and sustainable industrial development.