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Qingdao Conqinphi Environmental Technology Group Co., Ltd. introduces its advanced MVR Evaporation Crystallization System, engineered specifically for chemical plant wastewater treatment to achieve zero liquid discharge (ZLD). With over 8 years of specialized manufacturing experience and a factory spanning 10,000–30,000 square meters, we deliver reliable, high-performance evaporation solutions that reduce operating costs while meeting strict environmental regulations. Our system combines mechanical vapor recompression technology with intelligent process control, enabling efficient recovery of distilled water and solid salts from complex industrial effluents.
Product Overview
This MVR evaporation crystallization system is designed to handle high-salinity wastewater from chemical processes, including streams containing chlorides, sulfates, nitrates, and other dissolved solids. By reusing the latent heat of vaporized steam, the system achieves energy savings of up to 80% compared to traditional single-effect evaporators. The result is a compact, fully automated solution that produces high-quality distillate (
Key Technical Features & Specifications
- Mechanical Vapor Recompression: Uses high-efficiency centrifugal or Roots compressors to recycle vapor heat, drastically reducing steam consumption.
- Forced Circulation Design: Prevents scaling and fouling in the heat exchanger, ensuring long-term stable operation even with high fouling potential wastewater.
- Multi-Effect Configuration (optional): Additional stages can be integrated for high-capacity applications to further improve energy efficiency.
- Intelligent PLC Control: Monitors temperature, pressure, pH, conductivity, and crystallizer level in real time; automatic adjustment for varying feed conditions.
- Corrosion-Resistant Materials: All wetted parts are made from SS316L or dual-phase SS2205 (available upon request), ensuring longevity in aggressive chemical environments.
- Zero Liquid Discharge: Produces both clean water for reuse (e.g., cooling tower make-up, process water) and dry salt cake with moisture content
| Parameter | Typical Range / Description |
|---|---|
| Feed TDS | Up to 250,000 mg/L |
| Evaporation Capacity | 1 – 1000 tons/day (customizable) |
| Energy Consumption | 20 – 80 kWh/m³ of water removed |
| Distillate Quality | < 50 ppm TDS (conductivity < 100 µS/cm) |
| Salt Moisture Content | < 2% |
| Operating Temperature | 70 – 105 °C (adjustable) |
| Compressor Power | 50 – 2000 kW depending on capacity |
| Control Interface | PLC + Touch screen (remote access optional) |
Advantages & Customer Benefits
- Significant Energy Savings: The MVR technology eliminates the need for external steam and cooling water, reducing operational costs by 50–80% compared to conventional thermal evaporation.
- Low Maintenance: Forced circulation and anti-scaling design minimize fouling, extending cleaning intervals and reducing downtime.
- Fully Automatic Operation: Once set, the system runs unattended with minimal operator intervention, thanks to advanced sensors and self-tuning PID control.
- Compact Footprint: Modular skid-mounted design saves valuable floor space and simplifies on-site installation.
- Scalable Solutions: Single units can be combined to handle large flow rates, and our team provides turnkey engineering support.
- Environmental Compliance: Achieves true ZLD, helping chemical plants meet stringent discharge regulations and reduce environmental liability.
Why Choose Qingdao Conqinphi?
As a specialized manufacturer established in 2015, we have delivered MVR systems to clients across North America, South America, Europe, Southeast Asia, Africa, and the Middle East. Our annual export value exceeds US$10 million, reflecting global trust in our technology. Our factory is equipped with advanced testing facilities, and our quality management system is certified under ISO9001, ISO14001, and OHSAS18001 (among other standards). Our team of over 200 experienced engineers and technicians ensures that every system is custom-designed to handle site-specific wastewater chemistry, providing reliable performance with a typical payback period of 1–3 years. We invite you to contact us for a feasibility study or quotation – your zero liquid discharge journey starts with Conqinphi.
Frequently Asked Questions (FAQ)
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Q: What types of wastewater can the MVR system treat?
A: This system is designed for high-salinity wastewater from chemical plants, including streams with chlorides, sulfates, nitrates, heavy metals, and organic contaminants. Pre-treatment (such as pH adjustment and oil removal) may be required depending on the feed composition. -
Q: What is the typical energy consumption compared to other evaporation methods?
A: Our MVR system consumes only 20–80 kWh per cubic meter of water removed, which is 60–80% less than a conventional single-effect evaporator and significantly lower than multi-effect systems when steam cost is high. -
Q: How is the crystallized salt disposed or reused?
A: The dry salt cake (moisture -
Q: Can the system handle varying flow rates or feed concentrations?
A: Yes, the PLC control adjusts operating parameters automatically to fluctuations. However, we recommend providing typical and maximum feed conditions during the design phase to optimize performance. -
Q: What maintenance is required?
A: Routine tasks include monitoring compressor oil levels, checking seals, and periodic cleaning of the heat exchanger (typically every 3–6 months depending on scaling tendency). The system is designed for minimal manual intervention. -
Q: What is the typical lifespan of the MVR system?
A: With proper material selection (e.g., SS316L or SS2205 for wetted parts) and regular maintenance, the system can operate for 15–20 years or longer. All components are replaceable and sourced from reputable suppliers. -
Q: Do you provide installation and commissioning support?
A: Yes, we offer on-site supervision, training for operators, and remote technical support. Our team can also assist with local fabrication of piping and electrical connections if needed. -
Q: Are there any options for heat integration with existing plant utilities?
A: Absolutely. We can design the system to preheat feed using waste heat from other processes or to recover additional low-grade heat, further improving overall plant energy efficiency.
Contact us today for a customized MVR evaporation crystallization solution!
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