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Waste batteries management: the evaporation for water reuse and costs reduction.

By 29 July 2022case, rvf, waste

The customer

One of the leading companies in the management of dangerous automotive and lead waste and its conversion into useful products for society. Currently, our Client deals with over 3,000,000 battery units and produces over 40,000 tons of lead every year.

The customer aimed at treating the liquid waste coming from battery recycling to recover the Na2SO4 salt and to reuse the water, with a reduction in costs of the traditional treatment.

The solution provided
The EVALED solution we recommended to achieve these important goals is a mechanical vapor recompression evaporator type RV F 60, with a distillate production capacity of 60 m3/day and a footprint of 21 sqm.

RV F is the range of mechanical vapor recompression evaporators designed to achieve the most reliable heat exchange with minimum fouling and scaling.
The line is dedicated to water separation and possible reuse from high salty wastewater.
The MVR is the lowest energy consumption evaporation technology. Wastewater is constantly treated: the distillate and the concentrate are continuously separated and then simply discharged through a pump.
The high efficiency is achieved also thanks to the heat recovered by cooling the two outlet streams using the inlet effluent.

All the EVALED®️ RV F evaporators can be remotely monitored and controlled through the HUBGRADE digital platform.

The results:

  • 100% water reuse
  • salt recovery, sold as a by-product
  • disposal costs reduction
  • ZLD
  • Payback: about 2 years
Technology type Material Footprint (m2)
MVR Forced Circulation RV F 60 UNS S32750 21
Parameters U.M. Waste In Distillate Out Concentrate
pH 6.5 6
TS at 105°C % 12 <0.01 >80
Conductivity μS/cm >100000 <80 -
COD ppm 95 <60 -
Sulphates ppm >700000 <50 -
Chlorides ppm 48 13 -
Lead ppm 1.3 <0.1 -