The type of flotation used by Idraflot is dissolved air flotation (DAF), in which the suspension is saturated with air at high pressure. The bubbles in a DAF system are much smaller than in other types of flotation systems thus adhering better to solids. This allows Idraflot DAFs to achieve high thickening and clarification grades that can be defined as ultra flotation.

Designed for treatment capacities ranging from 5 to 480 m³/h, Idraflot flotation units are protected by three patents intended to assure a perfect mixing of the waste with saturated water and an uniform distribution of the water flow along the entire surface of the unit. Moreover, the Idraflot tank is designed with modular components, allowing for easy replication of the same level of performance throughout the entire unit. This modular design not only enhances process stability but also allows air blowing across the entire surface of the unit rather than from only one point as in traditional systems, enabling a significant advancement in functionality.

Finally, the corrosion resistance of the Idraflot is a fundamental characteristic, particularly crucial when dealing with highly concentrated liquids. To ensure robust protection against corrosion, Idraflot flotation units are made of austenitic stainless steel.

How Idraflot works

The first step consists of mixing the wastewater with chemicals. Coagulants and flocculants are injected to improve the solid/liquid separation. Depending on the water to be treated, Idraflot offers the advantage of optimizing the dosage of chemicals compared to traditional flotation processes.

The wastewater subsequently enters the DAF double tank where patented nozzles blow fine air bubbles under a pressure of 6 bar. This process facilitates the flotation of solids that are more similar to the air, helping them rise and accumulate at the surface, while the clarified water flows down to the second tank. The accumulated solids, also called floated sludge, are then separated from the water using a scraper for further processing within the sludge train.

Features and benefits

A unique mobile and modular stainless steel design for faster delivery, easier implementation and reduced costs.
Extremely compact footprint — 35 to 40% smaller than traditional flotation units.
Reduced chemical additive dosing.
Optimized saturated water flow rate.
Enhanced thickening and clarification performance.
Avoid hydraulic short circuits.

Idraflot - Model SPF - Highly Compact DAF Units -Brochure