Lackeby Heat exchanger sludge/water

Lackeby Heat exchanger sludge_water-2

Lackeby Heat exchanger sludge/water combines innovative thinking and 40 years’ experience in this sector. This unit has been developed to meet special requirements for the heating or cooling of sludge. The unique patented design provides a compact heat exchanger with minimal maintenance needs.

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Efficient energy optimisation

The Lackeby Heat exchanger sludge/water is a uniquely designed unit for medias with a high viscosity. The patented turning chambers enable us to design the heat
exchangers for the highest possible heat transfer as well as meeting demands for a small footprint. The design also ensures that the heating or cooling system
runs with as low a load as possible in order to keep the operating cost low.


Modular design sludge/water heat exchangers from Lackeby are robust, compact, easy to install and maintain and highly reliable. Circular sludge channels ensure that large particles can be managed but also keeping the risk for clogging to a minimum. The innovative design with patented turning chamber assures high energy
transfer and low pressure losses. Further on, this robust and modularized product have all features for high reliability and low maintenance requirements.


Sludge applications

Wastewater applications

  • Direct heating or cooling of raw or
    digested sludge on the feed line
  • Heating and/or cooling of digested
    sludge by digester or pasteurization
  • Energy recovery from heated sludge.
  • Wastewater cooling in for example
    biological tanks
  • Energy recovery from outgoing