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Synergistic Application of Dissolved Air Flotation (DAF) and MBR Technology: Contributing to Protecting Clear Waters and

April 14, 2025
Synergistic Application of Dissolved Air Flotation (DAF) and MBR Technology: Contributing to Protecting Clear Waters and

In practical water treatment engineering, DAF and MBR technologies are often combined to form an efficient water treatment system. For example, in industrial wastewater treatment, DAF can serve as a pre-treatment device to remove suspended solids and oil, reducing the load on the subsequent MBR process. Meanwhile, MBR technology acts as an advanced treatment process, further enhancing the effluent quality and enabling the reuse of wastewater. This synergistic application not only improves overall treatment efficiency but also reduces operational costs, providing a more optimized solution for the water treatment industry.

1. DAF: A Powerful Tool for Efficient Solid-Liquid Separation

DAF is a device that achieves solid-liquid separation through the use of micro-bubbles, widely applied in municipal sewage treatment, industrial wastewater treatment, and oily wastewater treatment. Its working principle involves mixing air with water to form micro-bubbles, which attach to the surface of suspended solids or oil, causing them to float to the surface for separation. The technical advantages of DAF include:

(1) ‌High-Efficiency Separation‌: Rapidly removes suspended solids, oil, and colloidal substances from water, ensuring high treatment efficiency.

(2) ‌Strong Adaptability‌: Suitable for various water qualities, particularly effective for lightweight suspended solids and oil.

(3) ‌Energy-Saving and Eco-Friendly‌: Low energy consumption and minimal use of chemical agents, reducing secondary pollution.

(4) ‌Compact Design‌: Space-saving and suitable for use in limited areas.

2. MBR Technology: A Revolutionary Breakthrough in Advanced Treatment

MBR (Membrane Bioreactor) technology combines membrane separation with biological treatment processes. It uses ultrafiltration or microfiltration membrane modules to achieve solid-liquid separation, effectively removing suspended solids, bacteria, and organic matter from water. The technical advantages of MBR technology include:

(1) ‌High-Quality Effluent‌: High filtration precision ensures that the effluent meets reuse standards.

(2) ‌Compact Footprint‌: Compared to traditional processes, MBR saves space by eliminating the need for sedimentation tanks.

(3) ‌Stable Operation‌: Strong resistance to shock loads, making it suitable for treating high-concentration organic wastewater.

(4) ‌High Automation‌: Easy to integrate with intelligent control systems, reducing manual operation costs.

3. Synergistic Application of DAF and MBR Technology

As two major breakthroughs in water treatment equipment, DAF and MBR technology have demonstrated outstanding performance and broad application prospects in their respective fields. Their combination and application not only drive advancements in water treatment technology but also provide critical support for achieving sustainable water resource utilization and environmental protection goals. In the future, with continuous technological innovation, these two processes will continue to play a vital role in the water treatment sector, contributing to the protection of clear waters and blue skies.


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