Dissolved Air Flotation (DAF) Machine for Domestic Sewage Treatment

High-Efficiency Wastewater Clarification Solution

The Dissolved Air Flotation (DAF) Machine for Domestic Sewage Treatment is a highly efficient solid-liquid separation system designed to remove suspended solids, grease, oils, organic matter, and other contaminants from domestic and municipal wastewater. Utilizing advanced microbubble flotation technology, the equipment significantly improves water quality and serves as an ideal pre-treatment or primary treatment solution for various sewage treatment projects.

With its compact structure, stable performance, and automatic operation, the DAF system is widely applied in residential communities, hotels, hospitals, schools, office buildings, commercial complexes, industrial parks, and municipal wastewater treatment facilities. The equipment helps reduce pollutant loads in subsequent treatment processes while lowering overall operating costs.

Working Principle

The Dissolved Air Flotation system operates by dissolving air into water under pressure within a specially designed air saturation tank. When the pressurized water is released into the flotation chamber, a large number of ultra-fine microbubbles are generated.

These microbubbles attach to suspended solids, grease particles, organic pollutants, and other impurities present in the wastewater. The combined density of the bubbles and pollutants becomes lower than water, allowing the contaminants to rapidly float to the surface. A mechanical skimmer continuously removes the floating sludge, while the clarified water is discharged for further biological treatment, filtration, or direct discharge according to project requirements.

This process enables efficient removal of pollutants while maintaining a relatively short hydraulic retention time.

Key Features

• Excellent removal efficiency of suspended solids (SS)

• Effective separation of oils, grease, and floating matter

• Significant reduction of COD and BOD levels

• Compact design requiring minimal installation space

• Fully automatic operation with intelligent control system

• Low power consumption and operating costs

• Stable treatment performance under varying wastewater conditions

• Easy maintenance and long service life

• Corrosion-resistant construction suitable for harsh environments

Main Components

The complete DAF wastewater treatment system generally consists of:

• Wastewater inlet system

• Air saturation tank

• Air compressor

• Dissolved air release device

• Flotation tank

• Sludge scraping system

• Sludge collection hopper

• Effluent discharge system

• Electrical control cabinet

• Automatic monitoring and control unit

Optional chemical dosing systems, filtration units, and biological treatment modules can be integrated according to specific treatment requirements.

Applications

The DAF domestic sewage treatment equipment is suitable for:

• Residential communities and apartment complexes

• Hotels and resorts

• Schools and educational institutions

• Hospitals and healthcare centers

• Shopping malls and commercial buildings

• Tourist attractions and recreational facilities

• Industrial park domestic wastewater treatment

• Municipal sewage treatment projects

• Temporary construction camp wastewater treatment

Advantages of Our Equipment

Our Dissolved Air Flotation Machine is designed to provide reliable, cost-effective, and environmentally responsible wastewater treatment solutions. By combining advanced flotation technology with intelligent automation, the system delivers consistent treatment performance while minimizing labor requirements and maintenance costs.

We offer customized equipment configurations based on wastewater characteristics, treatment capacity, discharge standards, and project conditions. From process design and equipment manufacturing to installation, commissioning, and technical support, our professional team ensures that every system operates efficiently and reliably throughout its service life.

Whether for small-scale domestic sewage treatment stations or large municipal wastewater projects, our DAF equipment provides an effective solution for improving water quality, reducing environmental impact, and supporting sustainable wastewater management.