Processes I.W.W.

 Back
Water treatment Ingenieering and Technologies

 Figures I.W.W.

 

INDUSTRIAL WASTE WATER (I.W.W.)

A specific apparatus is associated to each treatment.

Tertiary treatment - Removal of suspended solids and organic substances

  • Oxidation (air, ozone, reagent, …)

  • Coagulation - destabilisation of colloidal particles

    R.A.P.D. ("Réacteur d'Agrégation de Particules par Destabilisation")

    • combined or not with flocculation
    • with static or motorised mixer
  • Flocculation - agglomeration of particles by transport et contact one with the other. Larger particles or "flocs" are the result.

    R.A.P.T. ("Réacteur d'Agrégation de Particules par Transport")

    • combined or not with flocculation
    • with static or motorised mixer
    • with or without stirring
    • with or without post-treatment
  • Filtration through a filter-bed

    • at air pressure – "open" filters – for important flows, i.e. for several hundreds of m³/h. Units usually in  concrete  
    • "pressure " filters – for limited flows . Units in steel or synthetic material.
  • Filtration on activated carbon

  • Settling with plates (with or without sludge recirculation)

    Solid – liquid separation is improved by forcing the flow between plates mounted at an angle in the clarification zone

    HYDROPAC CL

    HYDROPAC - R CL

  • Filtration on porous membranes

    • microfiltration

      MICROSEP (Micro Filtration)

    • ultrafiltration - retention de suspended solids, colloids, germs,...

      ULTRASEP (Ultra Filtration)

    • nanofiltration - retention de suspended solids, colloids, bacteria and some bivalent salts, the monovalent salts are nearly removed.

      NANOSEP (Nano Filtration)

    • osmose inverse - retention of nearly all ions, salts, bacteria, viruses,...

      • One-train unit 

        PERMEASEP

      • Multi-train unit

        • serial

          PERMEASEP H.E (Reverse Osmosis High Efficiency)

        • in parallel

          PERMEASEP H.F (Reverse Osmosis High Flow)

        • combinated (parallel and serial)

          PERMEASEP C. (Reverse Osmosis Combi)

For some examples, click here.