Chemical-physical wastewater treatment plants
Chemical-physical treatment plants include all those systems that remove the pollutants in the wastewater, usually the elements that are not easily biodegradable, using chemical additives called reagents. These substances react with the pollutants making them insoluble and facilitating their removal.
Flotation is a water clarification treatment that removes suspended solids such as oils, grease, fibres and other low-density materials. The treatment dissolves air in the water under pressure. As the air bubbles rise, they drag the suspended particles with them, which remain on the surface as foam. This foam is then removed from the surface of the water with the help of a skimming device. To achieve the best possible result, the wastewater to be treated is dosed with a coagulant (mineral salts), such as ferric chloride or aluminium polychloride and a flocculant (polyelectrolyte) and soda for pH correction. The floater is customised with the electrical panel and PLC to control the process.