The recovery of caustic soda from the caustifying process is done by evaporation.

The washing liquor from the caustifying process is purified with a self cleaning prefilter and then fed into an evaporator with one or multiple serial stages.
The distillate which is generated through the evaporation can fully be reused in the washing process because of its perfect purity.
The caustic soda which is reconcentrated up to the necessary concentration for impregnation is at your disposal for process reuse.
The regenerated caustic soda can be cleaned in a further chemical purification step.

By implementing the recovery system the costs for caustic soda are drastically decreased.

The costs for neutralization are reduced accordingly.

Do you know your costs for caustic soda and effluent neutralization?

We would like to show you that the true value of matter in your wastewater is high enough to pay for our caustic soda recovery systems in the shortest time.

The amortization time of the caustic soda recovery is usually less than 12 months.

This is achieved mainly through careful adaptation to the textile production process, flexible implementation into the water and thermal economy of your finishing plant.

Maximum recovery rates of up to 85% through pre- and postcleaning systems, total recycling of the distillates, overlapping process automation with interfaces to the textile production plant, natural circulation evaporators of robust construction and simple design with a minimum of maintenance and operational requirements.

The evaporation process allows savings as follow:

  • Chemical recovery, NaOH out of weak lye
  • Water recovery out of weak lye
  • Heat recovery out of weak lye
  • Condensates recovery (water and energy) out of steam input
  • Full recovery of energy input (steam) in form of hot water
  • Energy savings due to centralised hot water distribution
  • Reduce waste water pollution and environmental pollution through recovery of weak lye

    • Donīt drain your money into the effluent any longer.

    Ask our specialists about the advantages of caustic soda recovery.
    We shall answer your questions about the technique and profitability on the basis of our longterm experience in the field of evaporation of caustic soda and caustifying processes in textiles.
    We check your special conditions on site and provide the most efficient process and plan for your mill.

    Please request our questionnaire

    We will work out a profitability study without any obligation.