The wastewater is sourced from municipality sewers (toilets, showers, drainage, cleaning, canteens, accidentally contaminated storm water, sewer, and some authorised industrial wastewater, etc..)
It is highly contaminated by: oil & grease, organics, total suspended solids, ammonia, and others pollutants such as phosphorous
It cannot be discharged directly to surface water nor in wells, due to its strong environmental impact.
Here below is described one of the flow scheme treatment that PSC Srl Engineering and Contracting could perform:
The treated water can be used as irrigation service, or for the final discharge that complies with the local legislations.