BUPOLSA's prolonged oxidation purification equipment is made of glass fibre reinforced polyester (GRP) and is based on the total oxidation purification system with recirculation of active sludge by means of the "air-lift" system. This is the most effective method for wastewater treatment. With this system, a purification degree of 97% can be achieved, with almost total elimination of pollutants and organic matter.


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