Biological sewage treatment contributes to environmental preservation in Piracicaba

Technology accompanied by quality analyzes are pillars of the sewage treatment process in Piracicaba. Through a strictly biological method, with high operational and environmental efficiency, without the use of chemicals, more than 3 billion liters of sewage are treated monthly by Mirante, in the municipality. The result is the return of treated water to the environment within strict quality standards, complying with environmental legislation and contributing to the continuity of the water cycle. "The main technology used is the activated sludge process. In practice, the sewage is stored in large aeration tanks that receive a constant injection of air, rich in oxygen. This environment stimulates the development of microorganisms that consume the organic matter present in the sewage as a source of food", explains Luis Gustavo Theodoro, Operations coordinator at Mirante, an Aegea company. “After this highly efficient cycle, the liquid goes to the decanters, where gravity separates the clean water from the solid part.” More than 29,000 laboratory analyzes are carried out monthly, involving operational control and compliance with the standards of Conama Resolution 430 - Credit: Disclosure.

All material that goes through this rigorous process is subjected to a thorough quality assessment before returning to the environment. More than 29,000 laboratory analyzes are carried out monthly, involving operational control and compliance with the standards of Resolution 430 of Conama (National Environmental Council). The station technology operates with maximum efficiency, and, to this end, the gears for this sustainability cycle begin much earlier and go beyond treatment. There is daily and continuous work that involves the safe transportation of all sewage produced in properties, in which the population plays an essential role. Proper use of the network and correct disposal of waste in homes, avoiding throwing garbage, plastics, diapers or oil down drains and toilets, are simple actions that prevent blockages, ruptures and overflows in the streets. "Our operations in Piracicaba are the result of a solid partnership with the municipality, joining efforts and investments so that the sanitation of the city, which is a national reference, continues to evolve", highlights Daniel Mantovani, CEO of Mirante. "Our commitment to the environment is reflected in the daily care of the Piracicaba River and its tributaries. And this work also directly transforms the reality of our population, generating increasingly greater health, dignity and quality of life." Large aeration tanks use the "activated sludge" process. In the structure, the constant injection of oxygen stimulates microorganisms that consume organic matter, ensuring high operational and environmental efficiency in the municipality – Credit: Disclosure.