Treatment of waste water

Title: Wastewater treatment It comprises the treatment of wastewater by any process (physical, chemical, biological, etc.). Includes the operation of wastewater treatment facilities for reuse, for example example, wastewater from agriculture, industry, road cleaning or water collected rainwater, or for artificial recharge or increase of groundwater bodies and freeze-drying of sewage sludge in wastewater treatment plants. Does not include:  Wastewater collection and drainage (37001);  Additional treatment of sewage sludge extracted from wastewater (38);  Aerobic treatment such as composting (38215);  Incineration with energy recovery (38220);  Incineration without energy recovery (38310);  Treatment of polluted soil or surface water (39000);  Construction and repair of sewage networks and WWTPs (42210);  Cleaning and unblocking drainage ducts in buildings (43221);  Rental of portable toilets (77390); WASTE AND CLEANING