Eco-Techno SRL.

- Model DPM SE Series - Multiple Effect Vacuum Evaporators with Alternative Energy Source



Distillation throughput from 420 l/h to 7 m3/h. Single or multiple effect vacuum evaporator, for the effective concentration of water-based solutions. To be applied whenever alternative source energy are available. It can be powered with hot water, steam, diathermic oil. Ideal to recycle any waste heat and to be combined with alternative source boilers.

Suitable for the treatment of large flow rates of wastewater, where limited maintenance is required. Versatile and technological, it is advisable to saline waters, leachate. Ideal in chemical & pharmaceutical, energy industry, industrial and municipal waste disposal sites.

Vertical boiling vessels free inside with thermal insulation, external maintenance-friendly tube bundle heat exchangers, manways and sight glasses with illuminators, condensation with plate exchangers, full automatic operation with PLC and touch screen.

Standard manufacturing in 1.4401/1.4404 (AISI316/316L) or special alloys for hazardous liquids. It can be designed to treat one or different water-based solutions at the same cycle.

Main Applications

  • ECO DPM series is particularly suitable for:
  • oily emulsions, wastewater from vibratory finishing, exhausted baths
  • wastewater from pressure die-casting (release agents, glycols, lubricant oils)
  • wastewater from galvanization (chromium, nickel, copper), exhausted baths, eluates
  • recycling of exhausted baths
  • treatment of foamy liquids
  • treatment of water-based solutions

  • Modular skid made of austenitic steel, single or multiple effect, with possible extension from 1 up to 3 evaporation
  • modules.
  • Horizontal boiling chamber, fitted with external tube-nest heat-exchangers, pullout type.
  • The multi-stage version allows the recovery of the latent heat of vaporization, in “cascading” effect, from 1st to
  • stage to next ones, reducing of 1/3 the otherwise required energy.
  • Digital and analogue control instrument for the automatic monitoring of the system.

  • Automatic circuit for condensate discharge and vacuum generation, composed of liquid ring pumps, cooling tanks, manual and pneumatic check valves, digital and analogue control.

  • The condensation of the evaporated wastewater happens in closed circuit with the steam passage through a water cooled plate heat exchanger from the cooling tower.
  • The condensate is stored in tanks separated from the vacuum circuit and raised by means of pumps controlled by level feelers.

  • Automatic circuit for the recirculation and discharge of the concentrate, complete with extraction pumps, pneumatic and manual valves, on-off valves for taking product samples during processing.
  • The automatic discharge function is programmable through an adjustable density control device or by a timer for a complete customization of the process.

  • The automatic system is complete with pneumatic valve and rotating nozzle. The circuit allows the release of cleaning agents inside the evaporator: the wash cycle time can be adjusted from the control panel according to the actual needs.

  • Automatic system complete with foam formation sensor and variable setting control. The circuit allows the automatic injection of antifoam products inside the evaporator: the quantity of injected antifoam is adjustable by the control panel according to the actual needs.

  • Siemens PLC control unit and touch screen control panel
  • Electrical panel in painted sheet, protection IP 54
  • Automatic overload cutout for all motors
  • 24 volts auxiliary circuit
  • Wiring made in flame proofs cables
  • Level control regulators for tanks and outside reservoirs level.

  • Power supply by hot water or steam
  • Outside heat-exchanger forced type
  • Heat exploiting at multiple effect
  • Wastewater inlet, distillate and condensate outlet automatically operated
  • Check by PLC Siemens S7-200/300 with Siemens Touch Panel
  • Pull-out heat exchangers

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