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The global electroplating industry generates millions of gallons of rinse water daily, containing various dissolved salts including sodium sulfate, heavy metals, and organic compounds. Traditional treatment methods such as chemical precipitation and ion exchange have proven inadequate for handling high-volume, complex waste streams. Modern sodium sulfate wastewater evaporators address these limitations by providing efficient concentration and crystallization capabilities, reducing waste volume by up to 95% while enabling chemical recovery and reuse.
Achieve complete water recovery with advanced evaporation technology, eliminating liquid waste discharge and maximizing resource utilization.
Purified condensate meets quality standards for rinse water reuse, reducing freshwater consumption by up to 90% in metal finishing operations.
Crystallize and recover sodium sulfate with 99%+ purity, enabling reuse in production or sale as industrial-grade chemical product.
Contemporary sodium sulfate evaporator systems incorporate sophisticated automation and process control technologies. Real-time monitoring of conductivity, pH, temperature, and concentration enables precise control of crystallization conditions, ensuring consistent product quality. Integration with existing wastewater treatment infrastructure allows for seamless operation within comprehensive environmental management systems.
Electroplating operations generate rinse water containing sodium sulfate from anodizing, pickling, and cleaning processes. Evaporators concentrate these streams, recovering sodium sulfate for reuse in plating baths while producing clean water suitable for rinse operations. This closed-loop approach eliminates discharge permits, reduces chemical purchasing, and ensures regulatory compliance.
Surface finishing operations including phosphating, passivation, and conversion coating produce wastewater with varying sodium sulfate concentrations. Evaporation systems handle these fluctuating loads efficiently, adapting to production schedules and maintaining optimal performance across different waste stream compositions.
PCB fabrication involves extensive rinsing after etching, plating, and surface treatment processes. Sodium sulfate wastewater evaporators integrated into PCB manufacturing lines enable water recycling rates exceeding 95%, critical for operations in water-scarce regions or facilities with limited discharge capacity.
Automotive suppliers performing chrome plating, zinc plating, and other finishing operations face stringent environmental requirements. Evaporator systems provide reliable compliance while reducing operating costs through chemical recovery and water reuse, with payback periods typically ranging from 2-4 years.
Modern sodium sulfate evaporators achieve impressive performance metrics: concentration ratios of 10:1 to 30:1, energy consumption as low as 15-25 kWh per cubic meter of water treated (MVR systems), and sodium sulfate recovery rates exceeding 98%. Continuous optimization through advanced process control and predictive maintenance ensures sustained high performance and maximizes return on investment.
Jiangsu Zongheng Concentration & Drying Equipment Co., Ltd.
The company's other main products include Tube Bundle Dryers, with design and manufacturing capabilities reaching 1600m² (making it a primary manufacturer of large tube bundle dryers). Other main products such as Single Screw Fiber & Germ Dehydrators and Wash Cyclones are recognized as high-quality products by starch manufacturers and the industry. High-quality products and a sincere service attitude have won consistent praise and trust from numerous users at home and abroad, fully demonstrating the company's first-class technical advantages and manufacturing capabilities for large-scale equipment.
Jiangsu Zongheng is always committed to exploration and innovation. Through years of sincere effort and user support, it has achieved sustained development. Main products include evaporation plants, comprising Multi-Effect Evaporators, Thermal Vapor Recompressors (TVR), Waste Heat Evaporators, and Mechanical Vapor Recompressors (MVR, achieving minimal unit energy consumption). These are widely used for liquid concentration, including distillates, alcohol stillage, ammonium sulfate, corn steep liquor, itaconic acid, threonine, starch sugar, sorbitol, glucose, fructose, trehalose, erythritol, organic wastewater, high-salinity wastewater, etc., making the company one of the domestic manufacturers with the most extensive product variety.
