Your challenges
Maximizing treatment performance and operational flexibility in limited spaces.
Removing fine particles and pollutants
Industrial and aquaculture water can contain suspended solids, bacteria, algae, oils and other fine particles that are difficult to separate efficiently.
Energy and chemical consumption
Conventional treatment processes can require several pumps, filtration steps and chemical additions leading to (high) energy and chemical consumption.
Working with limited space
Large horizontal treatment systems can require significant installation space.
Managing dissolved gases
Water treatment is not always only about removing particles. Depending on the application, dissolved CO₂, N₂ and H₂S may also need to be reduced, while oxygen may need to be added.
How does it work ?
VAL uses a specially designed vertical column operated under partial vacuum. The reduced pressure creates very fine microbubbles that interact with suspended particles and bring them toward the top of the column, where they are concentrated into foam and extracted. At the same time, the airlift effect drives water circulation through the system.
The process
Water enters the vertical VAL column, where partial vacuum and controlled air injection generate microbubbles. These bubbles interact with suspended particles and carry them toward the top of the column, where they form a concentrated foam layer that can be removed.
The airlift effect also creates controlled water circulation through the column without requiring a conventional external circulation pump for the treatment process. Flow, air supply, vacuum level and other parameters can be adjusted according to the characteristics of the water and the required treatment performance.
Where required, the same column can also support gas exchange. Vacuum can help remove dissolved CO₂, N₂ and H₂S,, while controlled gas injection can be used to increase dissolved oxygen or introduce another gas.
Key figures
Up to 1,500 m³/h
Flow range
Up to 5× smaller than conventional DAF
Footprint
VAL 400–VAL 2000
VAL AQUA models
VAL 900–VAL 2000
VAL INDUS models
References
- Industrial
- Fish processing
Foam fractionation for shellfish processing to reduce energy consumption – Guy Sanchez Huîtres
Oyster producer on the Étang de Thau in southern France, initially planned a conventional water-treatment train:
- Industrial
- Food & Beverage
Compact wastewater treatment for ready-meat manufacturer to meet discharge standards
A manufacturer of ready-made meals – notably tomato-based recipes – needed to treat a high-strength, high-pH industrial effluent to meet strict discharge standards, within a very limited ground footprint.