Application of Vacuum Evaporators in Electroplating Wastewater Treatment

Gu Zhouying
Jun 27
3 min read

Contents:

Introduction
Working Principle of SOLIDEST
What Is the SOLIDEST Vacuum Evaporator?
Application in Chrome Electroplating Wastewater
Technical Advantages of the SOLIDEST Vacuum Evaporation System
Why Choose SOLIDEST for Electroplating Wastewater Treatment?
Conclusion
FAQs

Introduction

The electroplating industry generates significant volumes of wastewater containing hazardous heavy metals such as hexavalent chromium, nickel, and zinc. Traditional treatment methods often struggle to achieve complete resource recovery and zero liquid discharge (ZLD). The SOLIDEST vacuum evaporator offers a highly efficient and energy-saving solution for treating electroplating wastewater—particularly chrome plating effluent—through its advanced low-temperature vacuum evaporation process.

HEAT PUMP EVAPORATOR | SOLIDEST by YASA ET

Working Principle of SOLIDEST

The SOLIDEST vacuum evaporator utilizes heat pump vacuum technology. By reducing internal pressure, it enables water to evaporate at low temperatures (typically 35–45°C). This process concentrates contaminants while recovering high-purity distillate. Operating under a vacuum of up to -96 kPa, the system significantly reduces energy consumption and provides stable control over chromium and other metal ions throughout the treatment process.

What Is the SOLIDEST Vacuum Evaporator?

The SOLIDEST system is an advanced vacuum evaporator for industrial wastewater treatment, utilizing heat pump vacuum technology. Operating under deep vacuum conditions (up to -96 kPa) allows water to evaporate at low temperatures (35–45°C), reducing energy use while effectively concentrating pollutants.

This cutting-edge evaporator separates high-purity distillate from heavy metal concentrates, providing an eco-friendly and cost-effective alternative to conventional methods.

Application in Chrome Electroplating Wastewater

Chrome electroplating wastewater is known for its high toxicity, salinity, and corrosiveness. It commonly contains hexavalent chromium (Cr⁶⁺), sulfate, and fluoride ions. The SOLIDEST system is capable of concentrating such wastewater by more than ten times without the use of any chemical additives. This enables the efficient separation of clean water from heavy metal-rich concentrates, thereby contributing to sustainable wastewater management.

Technical Advantages of the SOLIDEST Vacuum Evaporation System

Low-Temperature Operation for Energy Efficiency
Saving energy while ensuring high-performance water recovery.

Corrosion-Resistant Materials
Key components are made of titanium and corrosion-proof alloys, ensuring long-term durability against chromic acid and other aggressive chemicals.

Chemical-Free Operation
Unlike conventional treatments, SOLIDEST requires no added chemicals, eliminating the risk of generating secondary pollutants or sludge.

ZLD Integration
Can be seamlessly integrated into a zero liquid discharge (ZLD) system, supporting industries striving for total wastewater recycling.

Why Choose SOLIDEST for Electroplating Wastewater Treatment?

Proven in chrome plating and nickel wastewater applications
Low operating costs due to energy-efficient heat pump technology
Highly stable performance under continuous operation
Minimizes environmental footprint and operational risks
Supports corporate ESG and sustainability goals

Conclusion

The SOLIDEST vacuum evaporator offers a reliable and forward-thinking solution for electroplating wastewater treatment. Whether you're dealing with chrome plating, nickel baths, or mixed-metal effluents, this system helps industries reduce waste, recover water, and cut energy costs.

By delivering high-efficiency performance without chemicals and enabling ZLD compliance, SOLIDEST is more than just an evaporator—it’s a step toward sustainable industrial water management.

FAQs

What makes vacuum evaporation suitable for electroplating wastewater?
Vacuum evaporation enables the low-temperature concentration of aggressive wastewater without the need for additional chemicals, making it ideal for removing heavy metals and corrosive compounds.

Can SOLIDEST handle hexavalent chromium?
Yes, the system is designed to safely treat and concentrate Cr⁶⁺-Cr⁶-containing wastewater while recovering reusable water.

Is the SOLIDEST evaporator energy-efficient?
Yes. Its heat pump technology and low-temperature operation reduce energy consumption by up to 70% compared to traditional evaporation systems.

Can the system help achieve Zero Liquid Discharge (ZLD)?
Absolutely. SOLIDEST can be integrated with other pre-treatment units to support ZLD-compliant processes.