The most recent study developed by SPSL S.A. in partnership with the Foundation for Support of Research, Technology and Innovation of the University of Taubaté (FAPETI-UNITAU), were highlighted in the Saneamento Ambiental Magazine (Year XXXV – Edition nº 202, Sept/Oct/Nov 2025), a national reference in Engineering and Environment in Brazil. The research focused on evaluating the agricultural use of sludge generated at the Vargem Grande Water Treatment Plant (WTP), highlighting the importance of operational management and the quality of the material produced.

In this context, the Sludge Thickening and Dewatering System (SADL), operated by a qualified technical team and equipped with automated polymer dosage control, coupled with continuous monitoring of performance, efficiency, and operational effectiveness indicators, has ensured the excellent quality of the generated sludge. This high process efficiency, combined with the training of the professionals involved, is essential to ensure the stability of the final product and full compliance with the technical and environmental requirements that enable its safe and sustainable agronomic use.

Studies have concluded that the sludge generated during the operation of the water treatment plant can cease to be a waste product and become a product for agriculture, more specifically a soil conditioner, directly contributing to the sustainability and resilience of our production systems. With proper treatment and quality control, the results demonstrate that this material can be successfully reused in agricultural areas. This initiative contributes to the search for solutions that transform waste into products and, therefore, aligns with the principles of the circular economy and the Sustainable Development Goals foreseen in the UN’s 2030 Agenda.

This achievement reinforces SPSL S.A.’s commitment to innovation, responsible management of natural resources, and continuous process improvement for a more sustainable future.