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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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High Efficiency Dissolved Air Flotation Clarifier for Suspended Solids Removal
This High Efficiency Dissolved Air Flotation Clarifier is specifically optimized to achieve industry-leading suspended solids removal rates exceeding 95% across a wide spectrum of industrial wastewater compositions. The system employs a multi-zone treatment approach: raw influent first enters a rapid coagulation chamber where metal salt coagulants neutralize particle surface charges, followed by a tapered flocculation zone that gently aggregates destabilized colloids into settleable flocs without shear-induced breakage. Upon entering the main flotation cell, the conditioned water encounters a uniform cross-current of pressurized dissolved air released through a full-width nozzle manifold, generating billions of microbubbles with a tightly controlled size distribution between 10 and 30 microns. The laminar flow regime within the rectangular separation zone prevents turbulence that would otherwise disrupt the delicate bubble-particle agglomerates, ensuring maximum recovery of suspended matter into the surface float layer. A counter-current chain-and-flight scraper assembly continuously harvests the thickened sludge into an inclined hopper for gravity discharge to downstream dewatering equipment, while the clarified subnatant exits through a submerged orifice collection manifold to maintain consistent hydraulic balance throughout the operational cycle.
Key Features
Multi-Zone Treatment Design: Dedicated rapid mix chamber with variable-speed agitator followed by two-stage tapered flocculation ensures optimal coagulant dispersion and floc growth before flotation separation.
Full-Width Microbubble Distribution: Precision-machined release nozzles arranged across the entire inlet cross-section deliver uniform bubble density without dead zones that would allow untreated short-circuiting.
Laminar Flow Separation Zone: Extended rectangular tank geometry with internal flow straightening baffles maintains plug-flow hydraulic conditions critical for achieving separation efficiencies above 95%.
Counter-Current Chain Scraper: Continuous duty stainless steel chain-and-flight mechanism with adjustable scraper blade depth harvests floating sludge without disturbing the quiescent separation zone.
Submerged Effluent Collection: Perforated manifold positioned below the clarified water zone extracts treated effluent uniformly across the tank width, preventing localized high-velocity zones that could re-entrain settled solids.
Sludge Consolidation Hopper: Inclined bottom design with steep wall angles exceeding 60 degrees ensures complete gravity discharge of thickened sludge without accumulation or anaerobic decomposition.
Real-Time Turbidity Monitoring: Integrated optical turbidity sensor with 4-20 mA output enables continuous effluent quality tracking and automatic adjustment of chemical dosing rates via the control system.
Technical Specifications
Parameter
Specification
Model Series
ECER-DAF-CL Series
Flow Rate Range
5 - 80 m³/h
Tank Material
Carbon Steel with Multi-Layer Epoxy Coating
Suspended Solids Removal
≥ 95% (Typical)
Bubble Size Range
10 - 30 µm
Dissolved Air Pressure
0.35 - 0.55 MPa
Coagulation Chamber Volume
0.5 - 3.0 m³
Flocculation Stages
2-Stage Tapered (Rapid & Slow)
Total Power Consumption
5.5 - 15 kW
Inlet TSS Concentration
Up to 5,000 mg/L
Effluent TSS Target
≤ 30 mg/L
Sludge Solids Content
35 - 100 g/L
Applications
The high-efficiency DAF clarifier excels in applications where stringent discharge limits for total suspended solids must be reliably achieved on a consistent basis. Municipal drinking water treatment plants utilize this technology for algae removal from eutrophic source water reservoirs, achieving effluent turbidity below 1 NTU prior to filtration. Industrial laundry facilities processing high-solids wash water depend on the system to meet sewer discharge permits while recovering heat and water for reuse. Aggregate washing and sand processing operations remove ultra-fine clay and silt particles that conventional sedimentation basins cannot settle within practical retention times. Metal finishing shops treating parts washer effluent and vibratory deburring wastewater achieve compliance with local pretreatment standards before discharge to publicly owned treatment works. Rendering plants and animal byproduct processing facilities operate these clarifiers around the clock to remove proteinaceous solids and fats from high-strength process wastewater prior to anaerobic digestion or direct discharge.
Packaging & Quality Assurance
Prior to shipment, each clarifier undergoes a complete wet commissioning test with water to verify hydraulic balance, skimmer operation, and dissolved air system performance. The unit is disassembled into major sub-assemblies and packed in custom timber crates with interlocking corner joints for stacking strength during containerized shipping. All internal surfaces receive a final coat of chemical-resistant epoxy paint, while stainless steel fasteners are individually wrapped to prevent galvanic corrosion during transit. Every shipment includes as-built P&ID drawings, a complete spare parts catalog with part numbers, detailed commissioning procedures, and troubleshooting flowcharts for operator reference. We provide a 12-month defect warranty with optional preventive maintenance contracts and 24/7 remote diagnostic support via industrial IoT gateway connection, enabling our engineering team to monitor system performance and proactively identify potential issues before they affect production.
