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Help CenterMulti-Effect Vacuum Evaporation of Salts for Zero Liquid Discharge in Chemical Plants
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Welcome to Anping County Boli Hardware Wiremesh Products Factory — a trusted manufacturer since 1998, with over two decades of experience in industrial equipment. We are proud to introduce our Multi-Effect Vacuum Evaporation of Salts for Zero Liquid Discharge (ZLD) in Chemical Plants. This advanced system is designed to achieve complete water recovery and salt crystallization, helping chemical plants meet stringent environmental regulations while reducing operational costs. Built on our commitment to quality and innovation, this evaporator offers a reliable solution for sustainable wastewater management.
The multi-effect vacuum evaporation technology utilizes multiple stages of heat recovery to maximize energy efficiency. By operating under vacuum conditions, the system lowers the boiling point of the liquid, allowing for gentle evaporation and crystallization of salts. The result is a concentrated brine or solid salt that can be disposed of or reused, while the distilled water is recycled back into the production process. This approach not only eliminates liquid discharge but also reduces fresh water consumption and waste disposal costs.
Key Features
- Multi-Effect Design: Up to 7 effects for high thermal efficiency, reducing steam consumption by up to 80% compared to single-effect evaporators.
- Vacuum Operation: Low-temperature evaporation prevents scaling and fouling, extending equipment lifespan.
- Salt Crystallization: Integrated crystallizer produces dry, free-flowing salt crystals suitable for reuse or disposal.
- Zero Liquid Discharge: Complete recovery of water and solids, meeting ZLD standards.
- Automated Control: PLC-based system with touch screen interface for easy monitoring and operation.
- Corrosion-Resistant Materials: Constructed from SS304 or SS316L to handle aggressive chemical streams.
- Compact Footprint: Modular design saves floor space in existing plants.
- Energy Recovery: Vapor compression or heat pump options for further energy savings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Evaporation capacity | 1 – 50 m³/h (customizable) |
| Number of effects | 2 – 7 effects |
| Operating temperature | 40 – 80 °C (under vacuum) |
| Steam consumption | 0.15 – 0.3 kg steam per kg water evaporated |
| Material of construction | SS304, SS316L, or optional titanium |
| Control system | PLC + HMI touch screen |
| Power supply | 380V/50Hz (or as requested) |
Advantages & Benefits
- Compliance with ZLD Regulations: Helps chemical plants avoid fines and meet environmental standards.
- Reduced Operating Costs: Lower energy consumption and minimal chemical usage.
- Water Reuse: High-quality distilled water can be returned to the process, reducing freshwater intake.
- Waste Volume Reduction: Solid salt crystals are easy to handle and dispose of, reducing landfill costs.
- Long Service Life: Robust construction and anti-scaling design minimize maintenance.
- Customizable Design: Tailored to specific feed compositions, capacities, and site conditions.
Application Scenarios
This multi-effect vacuum evaporator is ideal for treating high-salinity wastewater from chemical processes such as:
- Pharmaceutical intermediates
- Pesticide production
- Petrochemical refining
- Dye and pigment manufacturing
- Metal finishing and plating
- Desalination brine concentration
Why Choose Us?
With over 24 years of manufacturing experience, Anping County Boli Hardware Wiremesh Products Factory has grown into a reliable supplier of industrial equipment. Our annual export value exceeds US$5 million, serving markets across North America, South America, Europe, Asia, Africa, and Oceania. We ship from major ports including Tianjin, Qingdao, and Shanghai. Our team provides comprehensive after-sales support, including installation guidance, commissioning, and training. We are committed to delivering high-quality, cost-effective solutions that meet the most demanding ZLD requirements.
Contact us today to discuss your specific wastewater challenges. Let us help you achieve zero liquid discharge with reliable, efficient evaporation technology.
Frequently Asked Questions
-
What is the typical payback period for this system?
Depending on energy costs and water savings, most clients see a payback within 1–3 years. -
Can the system handle varying feed compositions?
Yes, the PLC control adjusts parameters automatically to adapt to changes in salt concentration. -
What is the maximum salt concentration it can handle?
It can process brines with TDS up to 250,000 ppm or higher, depending on the design. -
Do you provide installation and commissioning?
Yes, we offer on-site supervision and remote support for installation and startup. -
What certifications do your products have?
Our products meet relevant industry standards; specific certifications are available upon request. -
Is the system suitable for corrosive chemicals?
We can construct the evaporator with SS316L, duplex stainless steel, or other corrosion-resistant alloys. -
How often does the crystallizer need cleaning?
Cleaning frequency depends on scale formation; typically every 3–6 months with proper operation. -
Can I get a sample test before purchasing?
Yes, we offer pilot-scale testing for your wastewater to verify performance and design.
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