Heat Exchanger for Wastewater

E-Plate Heat Exchanger for Wastewater

Our E-Plate self-cleaning heat exchanger makes it possible to use the waste water, which comes out very hot from the process, to heat the cold water. This helps to optimize the temperatures of the water flows and also to reduce the energy consumption of the wastewater treatment.

High performance and energy efficient wastewater treatment through heat recovery

The use of our wastewater heat exchanger can be included from the beginning in the planning of your new wastewater treatment or installed later to optimize existing wastewater treatment plants.

Our engineers will advise you on how to make the entire plant more energy efficient, recovering the heat from the wastewater in the most efficient way possible.

Principle of operation of our heat exchanger E ‑ Plate

Our E ‑ Plate is a plate exchanger, more precisely a thermoplate-based exchanger, which is cleaned through an optimized system of brushes. Due to this, it is also suitable for highly polluted wastewater. It is made up of double-walled stainless steel plates, arranged in a ring shape, through which the cooling water is distributed and flows evenly. Waste water enters the heat exchanger from below, circulates up through the tank and runs off the top. Thus, cold water circulates inside the thermoplates and residual hot water circulates outside.

The continuous rotating brush system reduces dirt to a minimum and ensures a high flow rate. This increases the efficiency of the exchanger considerably. In addition, the rotating movement of the brushes makes the wastewater circulate in a spiral. This produces the effect of a countercurrent heat exchanger. This constructive principle allows installation at the outlet of existing wastewater treatment systems without the need for additional booster pumps. Even complex measurement and control technologies are not required.

Areas of application:

  • Paper industry
  • Biogas plants
  • Foundry workshops
  • Tempering workshops
  • Tintorerías
  • Industrial laundries
  • Food industry



Calculation of your energy saving potential by using the E-Plate heat exchanger

The infographic uses the example of a paper mill. The process water supplied at the start of production is too cold, 12 degrees Celsius, and needs to be heated. At the end of the process, the wastewater has a temperature of 55 degrees Celsius and is therefore too hot for the installed biological wastewater treatment system. The industrial water treatment plant would no longer operate at this temperature, as the microorganisms would die. Also, the official maximum temperature limit for discharge of wastewater is 30 degrees Celsius.

Not only paper mills have problems with the temperature of the water at the outlet. Biogas plant operators, foundries and tempering plants, dry cleaners, industrial laundries and even the food industry can all benefit from this type of system. With the heat exchanger, the plant can save 40% of the natural gas it previously consumed. This investment pays for itself in the first year.


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