The vacuum evaporators are used for the concentration of aqueous solutions (rinsig in general) containing pollutants, through the evaporation of water at low temperature.
Thus it significantly reduces the volume of wastewater to be disposed of, allowing the reuse of the obtained distilled water to the users of origin.
This scheme therefore allows to totally recycle the water used in processes manufacturing, allowing a drastic reduction of the wastewater to be conferred to the disposal, a reduction in disposal costs and a saving on water supply.
In some cases (in rinsing and recovery of galvanic baths) the concentrated solution obtained in the treatment baths can be re-used.
Depending on the application areas, the of the potentialities demanded, energy sources available, our models follow this scheme:
HP = heat pump with R407C fluid
W = hot or overheated water
S = 0.5 bar steam
S = immersed heat exchanger, for non-encrusting solutions, up to 1.25 kg / dm3
CF = forced circulation, for solutions also foaming, non-incrusting, up to 1.25 kg / dm3
CN = natural circulation, for particularly aggressive liquids
R = with scraper-stirrer for incrusting solutions with high presence of suspended solids and the production of concentrates with density greater than 1.25 kg / dm3.
ME = multiple effect for large potentials and low consumption
TWR = condensation by evaporation tower
AT = air condensation
POTENTIALITY = From 250 up to 12,000 liters / day for WE HP
from 1,200 up to 20,000 liters / day for WE W and S
from 2,500 up to 72,000 liters / day for WE ME
MATERIALS = The materials used for the construction depend on the type of process wastewater, treated.