{"id":82304,"date":"2026-04-13T14:52:51","date_gmt":"2026-04-13T13:52:51","guid":{"rendered":"https:\/\/www.typsa.com\/?p=82304"},"modified":"2026-07-13T15:11:31","modified_gmt":"2026-07-13T14:11:31","slug":"82304","status":"publish","type":"post","link":"https:\/\/www.typsa.com\/en\/82304\/","title":{"rendered":"ENGECORPS is developing a project for one of Brazil\u2019s largest water reuse plants"},"content":{"rendered":"

Introduction and background<\/strong><\/p>\n

The Vit\u00f3ria Reclaimed Water Production Plant (RWPP) project, EPAR Vit\u00f3ria Reuse Water, is the result of a public-private partnership promoted by the state-owned basic sanitation concessionaire, Compa\u00f1\u00eda Esp\u00edrito-Santense de Saneamiento (CESAN), which covers the municipalities of Vit\u00f3ria and Serra in the state of Esp\u00edrito Santo. This initiative represents a significant milestone for the region\u2019s water resilience in the face of the growing water scarcity observed in recent years.<\/p>\n

The implementation of the system will provide greater water security for the Greater Vit\u00f3ria industrial and port hub, allowing part of the water resources currently allocated to industrial supply to be redirected to public supply, directly benefiting the population.<\/p>\n

ENGECORPS has been responsible for the comprehensive development of the RWWP\u2019s detailed design, including the multidisciplinary design of the civil, hydraulic, electromechanical, electrical, and automation and instrumentation works, based on the process design and the technical specifications for the equipment provided by Veolia.<\/p>\n

ENGECORPS\u2019s work on the Vit\u00f3ria RWPP demonstrates its ability to transform a highly complex technological concept into a complete and integrated detailed design, enabling one of the country\u2019s most significant water reuse projects. This project brings together advanced treatment technologies, sophisticated hydraulic and electromechanical solutions, a high degree of automation and major infrastructure, contributing directly to water security, sustainability and the strengthening of the circular economy in the Vit\u00f3ria metropolitan area, in the state of Esp\u00edrito Santo.<\/p>\n

RWPP\u2019s technological solution<\/strong><\/p>\n

RWPP\u2019s core technology is the Membrane Bioreactor (MBR) process for the biological treatment of domestic effluent, combined with a two-stage reverse osmosis final treatment system, capable of producing reclaimed water to a high standard of quality to meet the demands of industrial processes.<\/p>\n

\"\"<\/p>\n

The plant has been designed to treat an average flow rate of 450 l\/s and a maximum operational flow rate of 675 l\/s, whilst the pre-treatment systems and some hydraulic units are designed to handle peak flow rates of up to 800 l\/s.<\/p>\n

The process comprises the following units: screens, grit chambers and sieves.<\/p>\n

Bar screens, grit chambers and screening<\/strong><\/p>\n

Preliminary treatment consists of bar screens, screening and grit removal systems designed to remove coarse solids, sand, fibrous materials and oils, thereby preventing damage to the membranes installed downstream.<\/p>\n

Pre-treatment skids have been designed to handle a peak flow rate of 800 l\/s, comprising screens with a mesh size of 3 mm and aerated grit chambers. The flow then passes through a second screening stage, with a mesh size of 1 mm, designed to retain smaller solids and any remaining fibrous materials.<\/p>\n

\"\"Biological Treatment (MBR)<\/p>\n

The biological treatment consists of a circular reactor divided into three sequential compartments, anaerobic, anoxic and aerobic zones, forming a system based on the Modified UCT (University of Cape Town) process for the biological removal of nutrients, followed by four tanks with ultrafiltration membranes, which are responsible for the solid-liquid separation of the mixed effluent.<\/p>\n

In addition to the removal of organic matter, the process has been designed to achieve the biological removal of nitrogen and phosphorus, utilising prolonged aeration and a hydraulic configuration of the aerobic zone operating under a piston flow regime.<\/p>\n

To complement the biological removal of phosphorus, a ferric chloride dosing system has been provided.<\/p>\n

\"\"UCT bioreactor and ultrafiltration membrane tank<\/p>\n

Final polishing treatment<\/strong><\/p>\n

Final polishing is carried out using a two-stage reverse osmosis system, a solution that provides high-quality treated water and greater efficiency in permeate recovery.<\/p>\n

The effluent from the MBR system initially feeds a set of six reverse osmosis skids. The concentrate generated in this first stage is directed to a second set of six skids, thereby increasing the system\u2019s overall recovery rate. The permeate produced in both stages is directed to the reclaimed water storage tank, from where it will subsequently be pumped to industrial consumers.<\/p>\n

\"\"Sludge treatment<\/p>\n

The sludge generated in the biological process undergoes thickening and mechanical dewatering using thickening tables, followed by dewatering centrifuges, producing a sludge cake with a solids content of between 15% and 25%.<\/p>\n

After dewatering, the sludge is disposed of at environmentally appropriate disposal sites.<\/p>\n

\"\"Mechanical Thickening and Dewatering of Sludge<\/p>\n

Supporting infrastructure<\/strong><\/p>\n

In addition to the RWPP, the project includes the following associated structures:<\/p>\n