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Qingdao Conqinphi Environmental Technology Group Co., Ltd. — a professional manufacturer established in 2015 with a factory area of 10,000-30,000 m² and over 200 skilled employees — proudly introduces our Multi-Effect Distillation High-Salt Wastewater Treatment Evaporator with MVR Technology. This advanced system is designed to efficiently treat high-salinity industrial wastewater, achieving near-zero liquid discharge (ZLD) while significantly reducing operational costs. By combining multi-effect distillation with mechanical vapor recompression (MVR), our solution offers exceptional energy savings and reliable performance for demanding applications in chemicals, pharmaceuticals, textiles, and more.
Key Features & Benefits
- Energy-Efficient MVR Technology: Reuses vapor compression to cut energy consumption by 60–80% compared to traditional single-effect evaporators, lowering your electricity bill.
- Multi-Effect Distillation: Multiple evaporation stages maximize water recovery (up to 95%+), reducing waste volume and disposal costs.
- High Salt Tolerance: Handles feed water with TDS up to 25% (customizable), ideal for high-salinity wastewater from desalination, mining, and chemical processes.
- Corrosion-Resistant Construction: Made from stainless steel 316L or 304, ensuring long service life even in aggressive chemical environments.
- Fully Automatic PLC Control: Touch-screen interface with real-time monitoring, alarms, and remote access – minimal manual intervention required.
- Compact Skid-Mounted Design: Pre-assembled and tested for quick on-site installation, saving space and installation time.
- Customizable Configurations: Options for different compressor types, heat exchanger materials, and pre-treatment modules to match specific wastewater characteristics.
Technical Specifications
| Parameter | Value / Range |
|---|---|
| Processing Capacity | 1 – 100 tons/day (customizable up to 200 t/d) |
| Feed Water TDS | Up to 250,000 ppm (25% salt concentration) |
| Evaporation Temperature | 60 – 100°C (adjustable per application) |
| Compressor Type | Centrifugal or Roots Blower (optional) |
| Specific Power Consumption | 30 – 80 kWh per ton of water evaporated |
| Recovery Rate | ≥ 95% (depends on feed composition) |
| Control System | PLC + HMI with remote monitoring (SCADA ready) |
| Wetted Materials | Stainless Steel 316L (standard), 304 or duplex optional |
| Dimensions (L×W×H) | Varies by capacity; skid-mounted units available |
How It Works
The system combines multi-effect distillation and MVR (mechanical vapor recompression) technology. Feed water enters the first effect, where it is heated by external steam. The generated vapor passes through a compressor, raising its temperature and pressure, and then serves as the heating medium for the next effect. This cascading heat transfer dramatically reduces the need for fresh steam. The concentrated brine is discharged as a slurry or solid, while distilled water is collected for reuse. The entire process is controlled via PLC, ensuring stable operation even with fluctuating feed quality.
Industry Applications
- Chemical & petrochemical plant wastewater (high TDS, organic solvents)
- Pharmaceutical manufacturing effluents (salt-laden streams)
- Textile dyeing and finishing wastewater (high color and salt)
- Mining and metallurgical process water (heavy metals, high salinity)
- Landfill leachate and RO concentrate treatment
- Desalination brine minimization (zero liquid discharge)
Trust & Reliability
As a leading manufacturer with an annual export value between US$10 million and US$50 million, Qingdao Conqinphi has supplied wastewater treatment solutions to over 30 countries across North America, Europe, Southeast Asia, Africa, and the Middle East. Our factory is ISO9001 and ISO14001 certified, and we strictly follow quality management systems. All evaporators undergo rigorous testing before shipment, including pressure tests, performance simulations, and PLC checks. We offer comprehensive after-sales support: installation guidance, commissioning, training, and spare parts supply.
Contact us today for a customized proposal or to schedule a pilot test. Let our experienced team help you achieve cost-effective zero liquid discharge!
Frequently Asked Questions (FAQ)
1. What is the maximum salt concentration this evaporator can handle?
The standard design handles feed water with TDS up to 250,000 ppm (25% salt). For higher concentrations or scaling-prone salts, we can add anti-scalant dosing or adjust the evaporation temperature. Custom solutions are available upon request.
2. How does MVR technology compare to traditional thermal evaporation in terms of energy cost?
MVR reduces energy consumption by 60–80% because it recycles vapor latent heat via a mechanical compressor instead of using fresh steam. Typical specific power consumption is 30–80 kWh/ton water, versus 600–900 kWh/ton for conventional single-effect evaporation.
3. What is the typical recovery rate of distilled water?
Under normal conditions, the recovery rate is ≥95%. The exact value depends on feed salinity, scaling tendency, and the number of effects. We can design for up to 99% recovery with appropriate pre-treatment and blowdown management.
4. Is the system suitable for wastewater containing organic compounds or solvents?
Yes, but organic content must be evaluated case by case. Our evaporators can handle moderate levels of VOCs and organics; for high concentrations, pre-treatment like steam stripping or oxidation may be recommended. Contact our engineers for a pilot study.
5. What materials of construction are available for the heat exchangers?
Standard is stainless steel 316L. For highly corrosive brines (e.g., chlorides > 50,000 ppm), we offer duplex stainless steel, titanium, or coated options. The selection is based on your water analysis.
6. How long does it take to install and commission the unit?
Skid-mounted units are pre-assembled and typically require 1–2 weeks for on-site installation and hook-up. Commissioning and training take 3–5 days. For custom large systems, the timeline is discussed during project planning.
7. Do you offer after-sales service and spare parts?
Absolutely. We provide a one-year warranty on the entire system, lifetime technical support, and a spare parts package covering compressors, seals, gaskets, and PLC components. Remote troubleshooting is also available.
8. Can this evaporator be integrated with existing wastewater treatment plants?
Yes, our design is modular and can be integrated as a polishing step or as a stand-alone ZLD unit. We provide engineering support to ensure seamless integration with existing piping, power, and control systems.
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