Complete Acid Recovery & Waste Treatment System for Hot-Dip Galvanizing Lines | Zero Liquid Discharge

Complete Acid Recovery & Waste Treatment System for Hot-Dip Galvanizing Lines | Zero Liquid Discharge
 

WUXI WONDERY INDUSTRY EQUIPMENT CO., LTD. integrates advanced acid regeneration technology directly within our galvanizing systems, transforming waste management from a cost center into a value recovery process. Our comprehensive acid treatment system processes spent pickling acid through multi-stage regeneration, recovering 92% of usable acid while reducing waste disposal volumes by 85%. The system begins with precise acid concentration monitoring in each pickling tank, automatically triggering transfer to the regeneration circuit when efficiency drops below optimal levels.

The core regeneration technology employs distillation towers specifically designed for hydrochloric acid recovery. These towers operate at precisely controlled temperatures and pressures to separate free acid from iron chloride, producing three distinct output streams: high-purity returning to the pickling process, concentrated ferric chloride for industrial applications, and distilled water suitable for process reuse. This closed-loop approach not only eliminates hazardous waste disposal but also reduces fresh acid consumption by 70-80%, dramatically improving operational economics while ensuring environmental compliance.

Beyond acid regeneration, our system includes comprehensive fume treatment for the entire acid handling process. Enclosed acid rooms with negative pressure containment capture 98% of acid mists, which then pass through dual-stage scrubbing towers. The first stage employs dilution with process water that can be reused for acid preparation, while the second stage neutralizes remaining contaminants to meet international emission standards. Integrated sludge processing further enhances environmental performance, withreducing waste volume and our专利 drying systems decreasing moisture content from 60% to below 10% for cost-effective disposal.