MVR Evaporation Technology
Belmar – Mechanical Vapour Recompression ( MVR ) Evaporation technology developed in the UK
- Lowest energy consumption on the market
(15-45 kWh/m3) - Belmar offer differentiated purification technology, our distillate is already pure
so no need for add on technology
Low Energy Consumption - Foam Suppression - Oil and COD Removal Technology
Traditional MVR systems are centered around technology dating back to the 1980’s, that rely on high differential temperatures and comparatively low heat exchanger surface area, the result premature fouling and lost production. Compare our distillate temperature to competitor technology, we have less than 6 0C above the feed water temperature. We recover 98% of the evaporation energy and with a higher up-time, we can provide a comparatively smaller system.
MVR Principle of Operation
- Pretreated wastewater is fed into the MVR Evaporator (1) from waste feed tank and is preheated through heat exchanger (2) transferring thermal energy from exiting second pass non-condensable Vapour ( NCV ). This stage also greatly reduces odour leaving the process (14) without the need for carbon abatement. The second heat exchanger (3) heats the wastewater further, with exiting distillate. The final heat exchanger (4) recovers the heat from the primary NCV before it enters the evaporation circuit via the boiling chamber (5).
- The evaporation circuit consists of an evaporation heat cartridge (6) with a boiling chamber below (5).
- A centrifugal pump leads the concentrated wastewater from the boiling chamber through a steam or electrical heater (7) to a nozzle plate, which distributes the liquid over the evaporative heat exchanger. Once the waste starts boiling the steam rises in the center of the evaporation-column, any foam is controlled by the FOAM SUPPRESSION UNIT (8) allowing the steam to pass through the COMPRESSOR (9) without contamination or the need to dose expensive antifoam.
- The compressor transfers steam via the AEGIS Unit (10) which helps to remove impurities in the steam fed to the inside of the evaporative heat exchanger, here the steam heat is transferred to the waste side of the heat exchanger and the steam condenses into pure recycled distillate for reuse.
- Pure water is collected in the OIL CONSOLIDATION UNIT (11) where any residual oil is removed. This is mainly used when processing waste oil emulsions.
- A pump leads the distillate through the plate heat exchanger (3) and out of the system (12).
- With a boiling temperature of ~ 102 0C this fosters oil splitting allowing a two stage concentrate to be bled from the boiling chamber before passing through the OILSEP unit (13), here oil splits and allows concentrate (and oil) to exit the system (15) & (16) and further concentration of salts without the limitation of oil concentration building up. This yields a higher concentration factor compared with other MVR systems, and there is the added benefit of recovering oil with a lower water content.
Belmar Evaporation Technology - UK Engineering
Water is for life - Waste water treatment is for civilisation
- Lowest Energy Consumption
- Clear Oil Free Distillate with Low COD and Ammonia
- Easy Maintenance Design
- Foam Suppression - Almost all applications do not need any antifoam
- Distillate Temperature 5 degree C delta compared to feed temperature
- No need for heat removal from the operating room - we keep the energy inside our machine