SeVAMI® DAF (Dissolved Air Flotation)

Dissolved Air Flotation (DAF) is an effective wastewater treatment process used to separate oils, grease, fats, and suspended solids from water. The process involves introducing fine air bubbles that attach to these contaminants, reducing their apparent density and causing them to rise to the water surface. The floating impurities form a layer of froth or sludge, which is skimmed off and transferred for further treatment. DAF is particularly effective for removing lightweight contaminants that settle slowly or remain suspended in water.

The SeVAMI® DAF system is specially designed to maintain excellent laminar flow conditions, ensuring efficient separation and removal or recovery of solids, fats, oils, and grease from wastewater and process water. It is also suitable for paper mill applications and offers a compact, cost-effective solution for primary and secondary treatment. With a wide range of flow capacities and a ready-to-use assembly, the system provides reliable performance across diverse industrial applications.

Key Features

  • Compact rectangular design for space-efficient installation.
  • Available in MS, MS-FRP, and SS 304 construction options.
  • High removal efficiency for oils, grease, fats, and suspended solids.
  • Simple operation without the need for an air pressure vessel.
  • Customized models for primary and secondary treatment applications.
  • Wide flow capacity range to suit different treatment requirements.
  • Ready-to-use assembly for convenient installation and commissioning.
  • High hydraulic and solids loading capabilities.
  • Produces concentrated float sludge for easier handling and disposal.
  • Enables float sludge dewatering without intermediate thickening.
  • Low polymer requirements in suitable applications, with the potential to reduce coagulant dosage.
  • Smaller footprint compared with conventional flocculation and gravity sedimentation systems.

Technical Specification

Parameter

Details

Operation

Simple and user-friendly operation

Material of Construction

MS, MS-FRP, or SS 304

Design

Compact rectangular construction

Model Options

Models available for primary and secondary treatment applications

Flow Range

5–500 m³/h

Cost Efficiency

Cost-effective wastewater treatment solution

Assembly

Assembly

Installation

Designed for installation on a column structure

Loading Rate

High loading rate capability

Sludge Characteristics

Produces concentrated float sludge

Dewatering

Float sludge can be dewatered without intermediate thickening

Polymer Requirement

Often no polymer is required; coagulant dosage may be reduced, depending on wastewater characteristics

Footprint

Smaller footprint than conventional flocculation and gravity sedimentation systems

High removal efficiency for oils, grease, fats, and suspended solids

High removal efficiency for oils, grease, fats, and suspended solids

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