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{"title":"High Capacity Dissolved Air Flotation Machine for Large Scale Wastewater Plant","imgUrl":"https:\/\/img.chinax.com\/nimg\/49\/c3\/0480c3f587b9ea7eb3d6e7ff26ff-200x200-1\/high_capacity_dissolved_air_flotation_machine_for_large_scale_wastewater_plant.jpg","attrs":{"Tank Material":"Carbon Steel with Epoxy Coating","Payment Terms":"L\/C,T\/T,Western Union","Certification":"CE, ISO 9001","Model Number":"ECER-DAF-HC150"}}
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Advanced Microbubble Dissolved Air Flotation System for Fine Particle Separation
This Advanced Microbubble Dissolved Air Flotation System represents a breakthrough in fine particle separation technology through precision-engineered bubble generation achieving a tightly controlled diameter range of 5 to 30 microns. Unlike conventional DAF units that rely on simple pressure reduction orifices, this system incorporates a proprietary high-efficiency dissolved air saturation vessel with structured packing media that maximizes gas-liquid interfacial area, enabling dissolved air concentrations approaching 95% of theoretical saturation. The saturated water exits through a patented multi-stage pressure release manifold where controlled step-down depressurization eliminates the formation of large inefficient bubbles while producing an exceptionally dense population of sub-30-micron micro-sized bubbles.
Key Features
Structured Packing Saturation Technology: High-surface-area structured media inside the dissolved air vessel achieves mass transfer coefficients 40% higher than unpacked tank designs at equivalent operating pressure.
Multi-Stage Depressurization Manifold: Three sequential pressure reduction chambers with precision orifice plates eliminate energy-wasting large bubble formation while producing a uniform fine bubble population.
Sub-30-Micron Bubble Spectrum: Consistent generation of microbubbles in the 5 to 30 micron range verified by laser diffraction particle size analysis during factory acceptance testing.
Extended Bubble-Floc Contact Zone: Deep flotation cell design provides sufficient vertical travel distance for complete bubble attachment to target particles before surface arrival.
Adjustable Recycle Ratio Control: Variable frequency drive on the recycle pump combined with a flow control valve enables real-time adjustment of dissolved air input to match fluctuating influent solids loading.
Anti-Coalescence Baffle Configuration: Carefully spaced internal lamella plates maintain bubble separation while promoting laminar flow, preventing bubbles from merging into larger less efficient sizes.
Performance Verification Ports: Strategically positioned sampling valves at multiple depths allow operators to collect intermediate samples for process optimization and troubleshooting.
Technical Specifications
Parameter
Specification
Model Series
ECER-DAF-MB Series
Flow Rate Range
2 - 50 m³/h
Bubble Diameter Range
5 - 30 µm
Bubble Number Density
≥ 10⁸ per Liter
Air Saturation Efficiency
≥ 92% of Theoretical
Saturation Vessel Type
Packed Column with Structured Media
Operating Pressure
0.35 - 0.55 MPa
Recycle Ratio
15% - 35% (VFD Controlled)
SS Removal Efficiency
≥ 93%
Oil Removal Efficiency
≥ 90%
Total Power
2.2 - 7.5 kW
Tank Material
Carbon Steel with Epoxy / SS304 Option
Applications
The microbubble DAF system delivers exceptional treatment results across applications where the target contaminants are too fine or low-density for conventional separation methods. Surface water treatment plants drawing from reservoirs with seasonal algae blooms achieve complete removal of cyanobacteria cells and associated taste-and-odor compounds without excessive coagulant consumption. Printed circuit board manufacturing facilities treat copper-laden rinse water containing sub-micron metal hydroxide precipitates that pass through conventional clarifiers, recovering valuable metals while meeting stringent discharge limits below 0.5 mg/L. Dairy and cheese processing plants handling whey-containing wastewater remove fine proteinaceous solids and milk fat globules with diameters below 5 microns that resist gravity separation. Petrochemical facilities polishing dissolved air flotation effluent achieve additional removal of colloidal hydrocarbons prior to activated carbon adsorption, extending carbon bed service life by 40 to 60 percent. Aquaculture recirculation systems utilize the technology for fine solids removal from fish raceway effluent, maintaining water clarity while minimizing makeup water consumption and heating costs in indoor hatchery operations.
Packaging & Quality Assurance
Every microbubble DAF system undergoes rigorous performance validation including bubble size distribution analysis using laser diffraction instrumentation and dissolved air concentration measurement via the standard volumetric method. The equipment is packed in a custom-fabricated export crate with vibration-dampening mounts, humidity-controlled desiccant compartments, and tilt indicators to monitor handling conditions during transit. All precision components including release nozzles and structured packing elements are individually wrapped and secured. Shipment documentation includes bubble size distribution test reports, dissolved air efficiency certificates, complete mechanical and electrical drawings, comprehensive operator training materials, and a detailed commissioning checklist. We offer a 12-month comprehensive warranty against defects in materials and workmanship, supported by our global network of certified service partners who can perform on-site commissioning, operator training, and preventive maintenance visits to maximize equipment uptime and treatment performance throughout the operational life of the system.
