How does the liquid behave?
Some liquids foam, leave hard deposits or attack metal. We check for these problems before choosing equipment.
Multiple Effect Evaporator
Multiple effect evaporation.
Recover water using heat.
A multiple effect evaporator (MEE) recovers water from concentrated wastewater. Heating turns water into vapour, which supplies heat to the next stage. Cooling the vapour collects water while a smaller amount of more concentrated liquid remains.
See how it works
Why multiple effects?
Follow the heat through the system.
Each boiling stage is called an effect. The next stage runs at a lower pressure, so water can boil at a lower temperature. That lets vapour from the earlier stage supply its heat, reducing the need for fresh steam.
Steam supplies heat
Vapour → next stageEffect 1Evaporation stage
Vapour → next stageEffect 2Evaporation stage
Vapour → cooling stepEffect 3Evaporation stage
The bigger picture
Recover water. Concentrate what remains.
Two things leave the system: water collected by cooling the vapour, and liquid containing more of the leftover salts and waste.
Condensed water
Cool the vapour and it turns back into water, just as droplets form on a cool lid above a hot pan. This water is called condensate. Test it before reuse.
Concentrated liquid
As water leaves, salts and other materials that do not evaporate become more concentrated. This leftover liquid may need more treatment or drying.
Understand thin film dryingBefore choosing a system
What does the system need to work well?
What can the site supply?
The system needs heat, cooling and electricity. What is available on site affects the design.
How much water should we remove?
The stopping point depends on how the liquid changes as water leaves and how the remaining material will be handled.
Let’s talk about cost
What will you be paying for?
An MEE uses heat to turn water into vapour, then uses that heat again in another stage. You pay for the equipment and for the energy and care it needs to keep running.
Buying and setting it up
The starting cost includes the evaporation vessels, pumps, heat-transfer equipment and controls. Steam supply, cooling and site connections must be considered too.
The bills after installation
Heat is a main running expense. Depending on the site, that may mean paying for steam or fuel. Electricity, cooling, cleaning and maintenance also belong in the budget.
Why prices can differ
Removing more water means a different workload. The liquid being treated, available heat supply and number of evaporation stages affect both the purchase price and the ongoing bills.
A little clarity
Questions you may have
Your water. Your requirements.
Plan your wastewater treatment around the water you have.
Tell us where your wastewater comes from, roughly how much you have each day and what you want to use it for. Share any water test results you have.
Discuss your treatment plan
Based in Perundurai, Erode, Tamil Nadu. Serving Tamil Nadu, South India and India.
