Description

Vacuum Dryers for Waste Water from 250 to 1.000 l/day

Vacuum Dryers for Waste Water fit to obtain semisolid concentrates. Horizontal boiling vessel with saddle jacket heat exchanger. Large hinged front hatch for inspecting and manual concentrate extraction. Available also with endless scraper-screw

All dryers units aim at the natural separation of water from a pollutant solution avoiding the addition of chemicals and human’s assistance. The system can self carry out all operations of filling, treatment, discharging of the distillate and all controls as to guarantee a perfect and safety operation.

The goal of our ECO DRY plants is the reduction of pollutants obtaining a distillate that can be recycled for a new production process, or discharged respecting environmental laws and disposal only dry solid waste.

Full automatic operation system by PLC and display of main parameters by LCD screen. Standard manufacturing AISI316 – special alloys on demand. Range from 250 to 1000 l/day of evaporated water.

Main  Characteristics

• 100% Waste Water Recycling (zerowaste). Disposal only dry solid waste.
• Power supply by heat pump
• Saddle heat exchanger
• Front hatch for inspection and extraction of the concentrate
• Double hatch for models from 500 litres/day
• Charge & discharge of product, distillate and concentrate: completely automatic.
• Check by PLC Siemens S7-200 with OP7.
• Main frame and condensation area AISI 316 & 316L made.
• Special alloys on demand.
• Teleservice for remote control and servic

Main Applications

• Recycling of quenching salts
• Softening and recycling of water for blowing out and washing
• Recycling of ultrasonic washings, pickles, washbasins
• Concentration of extracts and fragrances
• Fit to obtain dry and shovelling concentrates (release agents, glycols, lubricating oils).
• Printing and photography
• Chemical Pharmaceutical and Cosmetics.
• Oily emulsions, wastewater from vibratory-finishing, exhausted baths.
• Treatment of high foamy liquids
• Treatment of all water-based solutionsower supply by heat pump
• Wine producers-By removing the excess of water contained in grapes
• Jewellers wastes from ultrasonic plants.

Main Principals

The system shown in figure mainly consists of a horizontal boiling vessel (2) where the product evaporates at a low temperature (approximately 30-40 °C), and a condensation section (5) fit for steam condensation and distillate storage. It works in vacuum at approximately -740 mm Hg.

The Heat Pump circuit is driven by a frigorific compressor (1), which compresses and conveys the hot Freon gas in the outer exchanger covering the boiling vessel and heats to the liquid to be concentrated.

On leaving the exchanger, the gas flows through the sub-cooler (3) and evaporates by the expansion valve (4) in the condensation coil (5) condensing the steam.

The condensed (distillate) flows by the distillate pump (7) to the vacuum lung tank (8) and shall be discharged in the storage tank for overfilling. The residual concentrate collected on the bottom of the vessel (2) can be evacuated manually or automatically once the pre-set concentration.

The Dry Model enables the protraction of the concentration time according to the product to be treated until obtaining a semisolid or even dry concentrate.

Guaranteed by our customers

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