China and Brazil secure clean water for millions in São Paulo

Key Concepts

• Solaris Water Supply System: A large-scale water infrastructure project in São Paulo, Brazil.
• China Energy Engineering Company (CEEC): A Chinese state firm that partnered on the Solaris project.
• Sabesp: The São Paulo state water and sanitation company.
• Public-Private Partnership (PPP): A model of collaboration between government and private sector entities.
• Kashwiraa Du Frana Reservoir: The source of raw water for the Solaris system.
• Venopolista Treatment Plant: The core facility of the Solaris system.
• Environmental, Social, and Governance (ESG) Principles: Standards for responsible business operations.
• Closed-Circuit Operation: A water management technique to minimize water loss.
• Water Security Resilience: The ability of a water system to withstand disruptions like droughts.
• Win-Win Collaboration: A mutually beneficial partnership.

Solaris Water Supply System: A Brazil-China Infrastructure Partnership

Project Overview and Scope

The Solaris water supply system represents one of the most significant water infrastructure developments in São Paulo in recent years. This ambitious project currently enhances the water supply for approximately 2 million residents across seven municipalities located in the western region of Brazil's largest metropolitan area. The system's operational launch occurred in the summer of 2017.

Partnership and Timeline

The Chinese state firm, China Energy Engineering Company (CEEC), became involved in the Solaris project in 2017. Their participation was established through a public-private partnership (PPP) with Sabesp, the São Paulo state water and sanitation company. Construction for the system commenced in 2014.

Water Sourcing and Transportation

The Solaris system draws raw water from the Kashwiraa Du Frana reservoir. This raw water is then transported over a distance exceeding 80 kilometers to a specialized treatment plant situated in Venopolista. This treatment plant serves as the central and most critical component of the entire Solaris system.

Impact and Significance

The collaboration between China and Brazil through the Solaris project aims to ensure a reliable supply of clean, treated water for a substantial portion of the São Paulo metropolitan area. The system's integration into the larger network that serves São Paulo's 22 million residents is crucial for alleviating pressure on older water infrastructure and bolstering the region's resilience against future water scarcity events, particularly droughts.

Lessons from the Drought

The construction phase of the Solaris system, which began in 2014, coincided with one of the most severe droughts experienced by the state. This challenging period provided critical insights for the project operators, underscoring the paramount importance of long-term planning and the necessity of implementing large-scale systems for ensuring water security. As stated by an operator, "The water crisis hit us exactly while the system was being built, which showed even more clearly the importance of long-term planning and exacting large scale systems. It increased our water security resilience."

Environmental, Social, and Governance (ESG) Commitment

From its inception, the Solaris plant has adhered to high standards in its operations, emphasizing good environmental, social, and governance (ESG) principles. A key feature of its operational methodology is the implementation of a closed-circuit system. This approach is designed to minimize water loss by recovering water that would typically be discharged during processes such as sludge treatment or filter washing. The recovered water is then re-treated and reintroduced at the beginning of the system.

CEEC's Contribution and Technological Advancements

CEEC's involvement began during the system's construction phase. According to CEEC's head in Brazil, the company introduced significant technological and managerial improvements. This included optimizing both the water treatment processes and the overall management of the project. CEEC's engagement extended beyond the Solaris project, with the company also investing in other sectors in Brazil, such as completing solar power plants in the state of Paraíba.

Perspectives on Doing Business in Brazil

Regarding business opportunities in Brazil, CEEC's representative expressed a positive outlook, stating, "Yeah, of course. Brazil has the resources, Brazil has the natural resources and China has the experience. China has the capital and the uh has the people to collaborate in in a win-win manner with Brazil. We are in indeed focusing on more investment in Brazil." This highlights a belief in the potential for win-win collaboration between the two nations, leveraging Brazil's natural resources and China's capital and expertise.

Conclusion: A Model of Sustainable Cooperation

The Solaris water supply system stands as a tangible example of successful infrastructure cooperation between China and Brazil. It demonstrates a commitment to sustainability and addresses critical water security needs for a vast population. The project's success is attributed to strategic long-term planning, advanced technological integration, and a strong adherence to ESG principles, all facilitated by a robust public-private partnership.