{"id":80477,"date":"2025-07-09T18:02:41","date_gmt":"2025-07-09T17:02:41","guid":{"rendered":"https:\/\/www.typsa.com\/?p=80477"},"modified":"2025-10-15T18:17:21","modified_gmt":"2025-10-15T17:17:21","slug":"wastewater-treatment-plant-expansion-project-sao-miguel-wwtp","status":"publish","type":"post","link":"https:\/\/www.typsa.com\/en\/wastewater-treatment-plant-expansion-project-sao-miguel-wwtp\/","title":{"rendered":"Wastewater treatment plant expansion project \u2014 S\u00e3o Miguel WWTP"},"content":{"rendered":"

Introduction<\/span><\/b>\u00a0<\/span><\/p>\n

The Tiet\u00ea River Decontamination Programme, which was launched in the 1990s following widespread social movement, has established itself as the largest environmental sanitation project in Brazil. In the first three phases, wastewater treatment plants were built and expanded, kilometres of collection networks and interceptors were implemented, and treatment capacity was significantly increased. As a result, the collection rate reached 87% and the treatment rate 84%, benefiting more than 13 million people in the metropolitan region of S\u00e3o Paulo. These advances prepared the ground for Phase IV (Integra Tiet\u00ea), whose objective is the universalisation of the sewer service and the recovery of river water quality.<\/span>\u00a0<\/span><\/p>\n

The works planned in this phase include the expansion of the S\u00e3o Miguel wastewater treatment plant (WWTP), located in the east of S\u00e3o Paulo. In operation since 1998, the station currently treats 1,500 litres of wastewater per second and serves more than one million inhabitants of the capital. Over the past few years, it has undergone modernisations, improving its efficiency, operational safety and reducing its environmental impact.<\/span>\u00a0<\/span><\/p>\n

The station uses the conventional activated sludge treatment process. The solid phase (primary sludge combined with secondary sludge) is treated using gravity thickeners, followed by anaerobic digesters and dehydration in filter presses for final disposal in a sanitary landfill. The station was originally designed to meet a final project flow of 6,000 l\/s, through the phased implementation of 1,500 l\/s modules. However, the operating flows were reviewed by SABESP in 2023, and it was <\/span>determined<\/span> that the new <\/span>average capacity of the final project should be 5,500 l\/s, making it the third largest in the country.<\/span><\/p>\n

\"\"Pumping Station – S\u00e3o Miguel WWTP<\/span>\u00a0<\/span><\/h6>\n

In recent years, the S\u00e3o Miguel WWTP has undergone updating processes to increase its efficiency and operational safety, including the renewal of equipment, industrial automation and the complete restructuring of the operating units. The interventions, within the framework of the programme, aim to ensure greater reliability in treatment, greater energy efficiency and lower environmental impact, directly contributing to the quality of life of the population served, which exceeds one million people in the capital of S\u00e3o Paulo.<\/span>\u00a0<\/span><\/p>\n

The expansion of the S\u00e3o Miguel WWTP is a fundamental milestone in phase IV of the Tiet\u00ea River Decontamination Programme. Rather than increasing treatment capacity, the project is committed to technological innovation, sustainability and energy efficiency, in line with the future demands of the S\u00e3o Paulo metropolitan region.<\/span>\u00a0<\/span><\/p>\n

In this context, SABESP signed a contract with the consortium formed by Engecorps, part of the TYPSA Group, and Senha Engenharia e Urbanismo for the provision of consulting services to carry out the study of alternatives, the conceptual and preliminary design for the expansion of the S\u00e3o Miguel WWTP, within the framework of the Tiet\u00ea River <\/span>Decontamination Programme \u2014 Phase IV (Integra Tiet\u00ea<\/span><\/i>).<\/span>\u00a0<\/span><\/p>\n

Expansion of the S\u00e3o Miguel WWTP<\/span><\/b>\u00a0<\/span><\/p>\n

The expansion works were planned in two phases to guarantee immediate increases in treatment capacity and, at the same time, preparing the station to meet the future goals of the Tiet\u00ea Programme \u2014 Phase IV. In both phases, technological decisions were aimed at optimising the use of existing structures, reducing operating costs and prioritising solutions with a lower environmental impact.<\/span>\u00a0<\/span><\/p>\n