Efficient Removal of Suspended Solids and Colloidal Matter
Microbubble attachment:
The system generates fine bubbles with diameters of approximately 20-50 μm. These bubbles attach effectively to oils, suspended solids (SS), colloids, and other low-density contaminants in the wastewater, allowing removal efficiencies of more than 90% under suitable operating conditions.
Wide range of applications:
The equipment is particularly suitable for treating:
- Oily wastewater from restaurants, food-processing plants, and slaughterhouses
- Fiber-containing wastewater from paper mills
- Algae-contaminated water in lakes, ponds, and landscape-water systems
Rapid Treatment and Compact Footprint
Rapid solid-liquid separation:
Compared with conventional sedimentation, air flotation requires a shorter hydraulic retention time, normally around 15-30 minutes. It provides high treatment efficiency and is suitable for applications involving large flow rates or limited installation space.
Compact design:
The modular structure can reduce the required footprint by approximately 30%-50% compared with conventional treatment systems, making it particularly suitable for expansion and upgrading projects at hospitals, factories, and existing wastewater treatment facilities.
Flexible Operation and High Degree of Automation
Adjustable operating parameters:
The air-bubble production rate, recycle ratio, chemical dosage, and other operating parameters can be adjusted according to real-time water-quality conditions. This allows the system to accommodate variations in influent quality, including seasonal fluctuations in hospital wastewater.
Intelligent control:
An integrated PLC control system can automatically regulate chemical dosing, including PAC and PAM addition, as well as air-bubble generation, thereby reducing the need for manual operation.
Higher Sludge Concentration and Lower Subsequent Treatment Costs
Reduced sludge-treatment load:
The floated sludge generally has a moisture content of approximately 95%-97%, which is lower than that of many conventional sedimentation sludges. It is therefore easier to thicken and dewater, helping to reduce subsequent sludge-handling costs.
Resource recovery:
Separated oils, fats, fibers, and other recoverable materials may be collected for reuse or further processing. For example, recovered fats and oils may be used as raw materials for biodiesel production where technically and economically feasible.
Environmental and Economic Benefits
Low energy consumption:
The stated energy consumption is approximately 0.1-0.3 kWh/m³, providing relatively low operating costs compared with energy-intensive separation processes such as centrifugal separation.
Reduced chemical consumption:
The flotation effect produced by fine bubbles can improve solid-liquid separation and may reduce the required dosage of coagulants and flocculants, thereby lowering operating costs and reducing the risk of secondary pollution.
