Overview
The CG CAV-DAFβ’ uses hydrodynamic cavitation to generate an exceptionally fine cloud of micro-bubbles (10β100 ΞΌm), significantly improving bubble-particle contact efficiency compared to conventional DAF. The cavitation device creates momentary low-pressure zones causing dissolved gases to nucleate into extremely fine, uniform micro-bubbles with dramatically higher total surface area per unit volume. This results in superior attachment to colloidal particles, emulsified oils, and colour bodies that conventional DAF systems cannot effectively remove. It is the preferred technology for textile dyeing, paper mill effluent, chemical plant discharge, and other streams with high colour or emulsified contamination.
Working Principle
Wastewater is chemically conditioned through coagulation and flocculation chambers. The conditioned feed enters the cavitation device where a high-velocity stream creates cavitation, nucleating extremely fine micro-bubbles. These micro-bubble-laden water and conditioned wastewater enter the flotation chamber together. Fine bubbles attach to particles, forming buoyant aggregates that rise to the surface. A continuous skimmer removes the floating sludge layer, and clarified effluent exits from the bottom zone. Heavy settled solids drain from the floor.
Key Technical Features
- Cavitation micro-bubbles: 10β100 ΞΌm diameter
- Colour removal: 60β80% (textile/paper wastewater)
- SS removal: >92%, FOG removal: >95%
- No dissolved air pressure vessel required
- Lower coagulant dosages than conventional DAF
- Effective 5β50Β°C operating temperature range
- Integrated coagulation and flocculation chambers
- SS316 or epoxy-coated mild steel construction
- Automated skimmer and sludge collection
- PLC control with dosing integration
Design Parameters
| Parameter | Value |
|---|---|
| Flow Range | 30β2,000 mΒ³/day |
| Bubble Size | 10β100 ΞΌm |
| SS Removal | >92% |
| FOG Removal | >95% |
| Colour Removal | 60β80% |
| Construction | SS316/MS Epoxy |
| HRT | 8β20 min |
Applications
- Textile dyeing, printing, and finishing effluent
- Paper and pulp mill colour and fibre removal
- Chemical and petrochemical plant effluent
- Pharmaceutical pre-treatment
- Paint and coating manufacturer effluent
- Tannery and leather processing
- Car wash central treatment
Advantages
- Superior micro-bubble generation vs conventional DAF
- Higher removal at lower chemical dosage
- No pressure vessel β simplified maintenance
- Effective for difficult emulsified and colloidal streams
- Compact footprint β faster installation
- SS316 for corrosive waste streams
Frequently Asked Questions
Request Technical Proposal for CG CAV-DAFβ’ Cavitation Air Flotation
Share your project details β our engineers will respond within 48 hours.