The vortex mixer aerator is a medium-to-large bubble, anti-clogging aeration device designed and manufactured by our company for wastewater biological treatment processes. Featuring a unique internal structure, this product achieves air-liquid separation, mixing, and vortexing within the aerator. The resulting bubble clusters undergo further shearing during their upward movement, ensuring high oxygen transfer efficiency while maintaining excellent mixing and anti-clogging performance. It is suitable for various activated sludge processes.
- Structure and Working Principle
- Core structural composition
The equipment is typically installed in a fixed tower or shield structure, primarily comprising:
- Outer cylinder and fixed base: The main structure, typically made of engineering plastics (e.g., ABS, nylon) or reinforced polypropylene (PP), is corrosion-resistant and structurally robust. The base is designed with air inlets and mounting interfaces.
- Internal mixing components (core): Composed of multi-layer cutting plates, spiral guide vanes, or turbine-type mixers. These internal components feature specially designed geometric configurations that generate turbulence and shear effects when gas-liquid flow passes through.
- Air diffusion device: The intake chamber or air distribution head located at the bottom ensures preliminary uniform air entry into the mixing zone.
- Working Principle
Compressed air enters the aerator from the bottom, while wastewater is introduced from the periphery or drawn in from the bottom. During the upward movement of the gas-liquid two-phase mixture, it undergoes repeated cutting, collision, and mixing by the internal multi-layer cutting and mixing components.
- The air is divided into smaller bubbles and fully contact with the liquid.
- The strong turbulence and vortex prolong the residence time of the bubbles in the water and renew the gas-liquid interface constantly.
- Finally, the mixed gas-liquid is discharged from the top or the side of the aerator, and the bubbles are further dispersed in the turbulence.
- Core technical features
- Outstanding anti-clogging performance: The relatively spacious internal flow channels generate medium-sized bubbles, which pose lower clogging risks compared to micro-pore aerators for water with minimal fiber or suspended solids and low pretreatment requirements, potentially reducing maintenance frequency.
- The oxygen transfer efficiency and mixing intensity are considered: The internal rotation mixing and cutting design can improve the oxygen transfer efficiency and produce strong local hydraulic stirring and pushing action, which is helpful to prevent the sludge deposition at the bottom of the tank and achieve the whole tank mixing.
- The system demonstrates excellent operational stability: Its internal components feature a fixed rigid structure without vulnerable elastic diaphragms, ensuring performance remains unaffected by diaphragm aging. Under prolonged operation, both efficiency and resistance maintain relatively stable levels.
- Installation and maintenance are relatively simple: typically fixed at the pool bottom with a simple and robust structure. Routine maintenance primarily involves periodic inspection and potential internal sediment removal, with straightforward operational procedures.
- Power efficiency and application scenarios: Its oxygen transfer efficiency typically falls between that of micro-pore aerators and perforated tubes. In scenarios requiring strong agitation or complex water quality, its overall operational benefits may be more pronounced.
- Main technical parameters
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Parameter item
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Description / Reference range example
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External dimensions (diameter)
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Common specifications: Φ260mm
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service area
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The empirical reference range for service area per unit is approximately 0.45– 0.55 m² per unit (depending on tank depth and mixing requirements).
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standard tidal volume
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The designed ventilation rate per unit is relatively wide, commonly ranging from 2 to 4 m³/h·unit.
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Solute Oxygen Transfer Efficiency (SOTE, clear water)
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Under standard test conditions (water depth 4-6m), the empirical value typically ranges from 16% to 20%.
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Main material
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nylon +ABS
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- Typical Application Fields
This equipment is designed for scenarios requiring comprehensive performance in anti-clogging, mixing capacity, and operational stability of aeration systems.
- Municipal sewage treatment: various activated sludge processes including aerobic tanks, anoxic tanks (functioning as mixers), pre-aeration in equalization tanks, and sludge thickening tanks.
- Industrial wastewater treatment: processes involving papermaking, textile, food processing, and pharmaceutical industries, which contain high concentrations of suspended solids or fibers and are prone to clogging micro-pore aerators.
- High-concentration organic wastewater: requires high-intensity stirring to ensure uniform suspension and mixing of sludge.
- The existing aeration system upgrade: This can serve as an efficient alternative to the original perforated pipe aeration system, with relatively simple installation and modification.
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