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wastewater treatment

PHYSICAL-CHEMICAL TREATMENT PLANT / DECOFLOC STATIONS

The Decofloc stations are intended for SMEs. They enable wastewater to be cleaned up in the metal or glass processing sector, as well as the recycling of cooling fluids.

Objective: to bring water into compliance for discharge into the public pipeline (compliance with the EWS of 28 October 1998 – State on 1 May 2017)

Typology of treated discharge: wastewater laden with solid particles and dissolved heavy metals.

Principle of treatment: insolubilisation of dissolved heavy metals/coagulation of solid particles/clarification of water/flocculation/concentration/filtration of the sludge to be disposed of as special waste.

Parameters under control:

  • pH
  • DCO
  • heavy metal content
  • hydrocarbon load
  • solid particle content

 

pH correction, insolubilisation, coagulation, flocculation, filtration:

  • Baths for removing polishing compounds
  • De-blocking baths for glass
  • Installation approved by the Swiss and European environmental authorities

evapo-concentration stations

Technology inspired by the natural cycle of water and allows for treatment of:

  • used washing liquids in industrial cleaning and surface preparation
  • wastewater from soil washing

In the watchmaking and micromechanics industrial sector, these discharges are characterised by a high load of surfactants, high values of chemical oxygen demand as well as the presence of heavy metals in the solution from the substrates treated (copper, nickel, chromium, titanium zinc, lead, etc.).

By their composition, these discharges are difficult to manage by conventional physical-chemical pre-treatment methods (coagulation/flocculation/filtration).


BENEFITS :

  • Easy recycling of polluted liquids into purified water
  • Concentration of industrial effluents
  • Reduction of constraints
  • Lower treatment cost.