Vacuum evaporators – are constructed for a high vacuum with low working temperatures what allows treatment of waste that may change their qualities and decompose in case of high temperatures and which in high temperature release volatile substances.Advantages: recirculation of water and its re-use in a production process what leads to minimalization of costs
Crystallizers – are constructed to treat concentrates, working in a vacuum, therefore less energy is needed to boil the waste water. Medium is mixed with a mixer. After boiling the water, the waste comes out in a solid form.
Advantages: low energy input, waste in solid form what minimizes the costs.