A Multi Effect Evaporator (MEE) is a thermal system used to concentrate liquids — especially wastewater — by evaporating the water content under vacuum or atmospheric conditions.
The key idea behind MEE is to reuse steam energy multiple times across a series of “effects” (evaporation stages), making the process highly energy-efficient compared to single-stage evaporators.
✅ TVR (Thermal Vapor Recompression) MEE:
Partially reuses the vapor generated by compressing it with a steam ejector.
Reduces fresh steam consumption.
Best for: Medium-energy saving needs with moderate investment.
✅ Non-TVR MEE:
Traditional design without vapor recompression.
Simpler, cost-effective for lower capacities.
Best for: Smaller plants or where steam cost is less critical.
✅ MVR (Mechanical Vapor Recompression) MEE:
Compresses vapor mechanically using a blower or compressor and reuses it as the heating medium.
Extremely low steam consumption; mostly electric-powered.
Best for: High-efficiency systems where energy savings are a major priority.
Ideal for industries without their own steam generation facilities.
Uses electric heating instead of steam, offering flexibility and easy integration.
Great for companies relying more on electrical power or renewable energy sources.
🔹 MEE + Centrifuge
Separates solid impurities after evaporation, enhancing sludge management.
🔹 MEE + ATFD (Agitated Thin Film Dryer)
Dries concentrated slurry to achieve solid discharge, a key step toward full ZLD.
🔹 MVR + ATFD
Super energy-efficient evaporation and solid waste management with minimal operating costs.
🔹 MEE + Centrifuge + ATFD
Full-fledged ZLD system with concentration, separation, and drying — complete liquid elimination.
