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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 square meters and over 200 employees, proudly introduces our MVR Forced Circulation Evaporator System designed specifically for high-concentration wastewater treatment. This system utilizes mechanical vapor recompression (MVR) technology combined with forced circulation to achieve efficient, energy-saving evaporation and concentration of challenging waste streams. With an annual export value exceeding US$10 million and serving markets across North America, Europe, Asia, and Africa, our evaporator delivers reliable performance for industries facing stringent wastewater discharge regulations.
The core of this system is the forced circulation design, which ensures high velocity flow across the heat exchanger to prevent scaling and fouling – a common issue when treating high‑TDS (total dissolved solids) or high‑viscosity wastewater. The MVR technology recovers and reuses the latent heat of vaporized steam, reducing energy consumption by up to 60–80% compared to traditional multi‑effect evaporators. This makes it an ideal solution for zero liquid discharge (ZLD) projects, brine concentration, and industrial effluent treatment.
Key Features and Technical Specifications
- Forced Circulation Loop: Maintains high velocity (2–4 m/s) across tube bundles to minimize scaling and enhance heat transfer coefficient.
- MVR Compressor: High-efficiency centrifugal or Roots blower compresses secondary steam to a higher temperature, supplying heat to the heating chamber.
- Automatic Control: PLC-based system with touch screen interface allows precise adjustment of temperature, pressure, flow rate, and concentration.
- Modular Design: Skid-mounted for easy installation; expandable capacity from 10 to 200 tons/day.
- Anti-Corrosion Materials: Wetted parts in stainless steel 316L, duplex stainless steel, or titanium (optional) to withstand aggressive chemical environments.
- Low Scaling Risk: Forced circulation prevents salt crystallization on heat transfer surfaces, reducing maintenance downtime.
- Energy Efficiency: Specific power consumption typically 20–50 kWh per ton of evaporated water – significantly lower than conventional evaporators.
| Parameter | Typical Range |
|---|---|
| Evaporation capacity | 10 – 200 tons/day |
| Feed concentration (TDS) | Up to 250 g/L |
| Evaporation temperature | 70°C – 120°C |
| Compressor power | 30 – 500 kW |
| Operating pressure | Atmospheric to -0.08 MPa (vacuum) |
| Material (heat exchanger) | SS304 / SS316L / Duplex / Titanium |
| Control system | PLC + HMI with remote access |
Advantages for High-Concentration Wastewater Treatment
- Zero Liquid Discharge (ZLD) Ready: The forced circulation MVR system can concentrate wastewater to near saturation, enabling subsequent crystallization or drying for solid recovery.
- Reduced Operating Costs: By reusing vapor heat, electricity cost is dramatically lower than thermal evaporation – a true advantage for continuous industrial operations.
- Minimal Chemical Usage: No need for anti-scalants or pre-treatment chemicals in many applications, lowering both cost and environmental impact.
- Flexible Feed Compatibility: Handles high‑salinity (NaCl, Na₂SO₄, CaCl₂), high‑COD, acidic or alkaline wastewater without performance degradation.
- Compact Footprint: Skid-mounted layout saves floor space, and modular design allows easy capacity expansion.
Why Choose Qingdao Conqinphi?
As a manufacturer with 10,000–30,000 m² factory and 201–300 experienced professionals, we have delivered MVR systems to clients in over 30 countries. Our annual export value of US$10–50 million reflects the trust placed in our technology and after-sales service. We hold certifications including ISO9001, ISO14001, OHSAS18001, ensuring rigorous quality and safety management. Every system is tested before shipment from Qingdao port, and we provide on-site commissioning, training, and 12‑month warranty with extended support available.
Frequently Asked Questions (FAQ)
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Q: What type of wastewater is suitable for this MVR forced circulation evaporator?
A: It is ideal for high-concentration industrial wastewater with TDS exceeding 50 g/L, including brine from reverse osmosis, landfill leachate, chemical process effluents, and mining wastewater. It can handle scaling‑prone streams due to the forced circulation design. -
Q: How does energy consumption compare to a traditional multi‑effect evaporator?
A: The MVR system consumes only 20–50 kWh per ton of water evaporated, which is 60–80% less energy than a three‑effect evaporator. Power is mainly used for the compressor rather than external steam. -
Q: Can the system be customized for specific concentration targets?
A: Yes. The PLC control allows adjustment of residence time and temperature to achieve final concentration up to 30–40% solids (depending on wastewater characteristics). Custom designs for higher concentrations are available upon request. -
Q: What materials are used for corrosive wastewater?
A: Standard wetted parts are SS316L. For chloride‑rich or highly acidic streams, we offer duplex stainless steel, titanium, or lined options. Please provide a water analysis for material selection. -
Q: How long does delivery and installation take?
A: Typical lead time is 50–70 days after order confirmation. Installation and commissioning can be completed within 2–4 weeks on site, depending on system size and site conditions. -
Q: What after‑sales support do you provide?
A: We offer 12‑month warranty, remote technical support, spare parts supply, and optional annual maintenance contracts. Our team can also travel to your site for training and troubleshooting. -
Q: Is a pre‑treatment system required before the evaporator?
A: For most high‑concentration wastewaters, a simple filtration to remove suspended solids is recommended. If oil & grease or volatile organics are present, we suggest upstream treatment to avoid foaming or scaling. Our engineers can advise based on your feed analysis. -
Q: Can the system achieve zero liquid discharge (ZLD)?
A: Yes. This evaporator is a core component in ZLD systems. It concentrates the wastewater, and the concentrated brine can be sent to a crystallizer or dryer to produce solid salt, achieving true zero discharge.
Contact Qingdao Conqinphi today for a custom solution that turns your wastewater challenge into a sustainable operation. Our experienced team is ready to provide a technical proposal and quotation based on your specific requirements.
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