Chemical Physical treatment plants

The Chemical Physical purification process enables the removal of pollutants present in waste water to make it suitable for discharge and ensure compliance with legal parameters, through two process phases:

  • The Chemical phase which renders pollutants present insoluble, thanks to the use of suitably dosed chemical reagents.
  • The Physical phase which involves decantation for the separation of pollutants present (in the form of sludge), from clarified water.  Pollutants separated as sludge are then sent for thickening using a filter press and for external disposal, whereas clarified water is generally filtered with active carbons and sent for discharge.


The characteristics of pollutants present and the volume of water requiring treatment determines which plant solution is adopted: Continuous Chemical Physical System for running water, or Discontinuous (Batch) System for small volumes of water.

Continuous Chemical Physical

It is the most widespread type of system, enables the treatment of copious water flows, which are sent continuously to various treatment sections. The following sequence is the typical one followed in a chemical-physical plant:

  • Reduction of chromates (if present)
  • Oxidation of cyanides (if present)
  • Coagulation
  • Neutralisation
  • Flocculation
  • Decantation/ sedimentation
  • Sludge compacting
  • Filtering of clarified water
  • Final discharge

Discontinuous Chemical Physical

(or Batch): it is a treatment system suitable for smaller volumes of waste water.

It enables the treatment of a defined quantity of waste water in a single reactor in which first reagents are dosed, followed by decantation with the separation of sludge at the bottom of the reactor. Once decantation is completed, sludge is separated and compacted through a  filter press, while clarified water is filtered using active carbons.

Aforementioned types of Chemical-Physical plants are meticulously planned and built by ITALPLANT, with particular focus on functional aspects and the quality of parts used.

  • Treatment tanks are made in plastic material, like Polypropylene or Polyethylene
  • Decanters and load bearing structures in Stainless Steel Aisi 304/316
  • Pumps, Stirrers and Instrumentation manufactured by top quality companies
  • Control panels and automation are made in house, based on designs by our technical staff and integrated with remote control systems.