Stormwater Management

Combined sewer overflow (CSO) may contain particulate and soluble wastes from domestic sewage, industrial and commercial wastewaters.  These waste products include suspended solids, bacteria, viruses, nutrients, toxic pollutants, oil, grease and debris, posing significant risks to receiving water quality, public health and aquatic life.

Stormwater Management

Veolia Water Technologies provides municipalities and industries with solutions to control and limit sewage overflows which are toxic for the environment. The Hydrovex® range of technologies addresses the needs of our clients whatever the characteristics of their installation may be. 

With more than 10,000 installations across North America, the Hydrovex^® line of wet weather technologies (John Meunier products) offers a wide range of sustainable, efficient and high quality solutions, including:

• Flow control for stormwater runoff
• Flow control for combined and sanitary flows 
• Level control in collection systems
• Floatables screening
• Off-line or in-line retention and treatment

Stormwater Treatment

Veolia applies its Actiflo^® process for high rate clarification and removal of total suspended solids and biochemical oxygen demand materials during wet weather conditions.

• The Actiflo^® effluent typically achieves higher than 90% removal, making flows easily disinfected with UV or chlorination.
• The Actiflo^® process can be used in parallel with a conventional water treatment plant or at a satellite facility within the collection system.
• Offering unlimited treatment capacity, the Actiflo^® process allows elimination of overflows.
• Process trains can be used for primary and/or tertiary treatment during dry weather flows
• Operational flexibility to rapidly respond and react to variability in wet weather events
• BIOACTIFLO™, combining the benefits of biological treatment with ACTIFLO, to meet secondary standards