POLYGON MACHINE
Polygonmachine PRT Series – Rake Thickener Systems
Polygonmachine PRT Series – Rake Thickener Systems
Polygonmachine PRT Series Rake Thickener Systems are engineered for high-capacity solid–liquid separation and continuous sludge thickening in aggregate washing, mining, recycling, and industrial wastewater applications.
Featuring a low-profile settling tank, mechanical rake arms, and precision flocculation control, these systems deliver efficient particle settling, high overflow water clarity, and steady underflow discharge under continuous duty conditions.
Technical Specifications
| Model | Tank Diameter (m) | Tank Height (m) | Capacity (m³/h) | Underflow Density | Overflow Clarity | Rake Drive Power (kW) | Sludge Discharge |
|---|---|---|---|---|---|---|---|
| PRT-10 | 10 | 3.2 | 200–300 | 1.05–1.2 t/m³ | <60 NTU | 3 | Pump / Valve |
| PRT-15 | 15 | 3.6 | 350–500 | 1.1–1.25 t/m³ | <50 NTU | 4 | Pump / Valve |
| PRT-20 | 20 | 4.0 | 600–900 | 1.2–1.3 t/m³ | <40 NTU | 5.5 | Pump / Valve |
| PRT-25 | 25 | 4.5 | 900–1200 | 1.25–1.35 t/m³ | <30 NTU | 7.5 | Pump / Valve |
| PRT-30 | 30 | 5.0 | 1200–1600 | 1.3–1.4 t/m³ | <25 NTU | 11 | Pump / Valve |
Key Features
High-Capacity Sedimentation
The wide-diameter tank increases settling area, allowing rapid downward movement of suspended solids and maximizing volumetric throughput.
Mechanical Rake Mechanism
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Rotating rake arms sweep the tank floor
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Direct solids toward the center discharge cone
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Prevents dead zones and uneven sludge accumulation
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Ensures smooth, continuous underflow extraction
Precision Flocculant Dosing
Integrated PolySmart™ dosing unit improves particle aggregation and accelerates sedimentation, especially for ultra-fine materials.
Optimized Overflow Weirs
Full-perimeter overflow provides stable, high-clarity recycled water (<25–60 NTU depending on model), ideal for feeding washing plants.
Steady Underflow Control
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Automated discharge via density sensor feedback
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Compatible with centrifugal or piston sludge pumps
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Provides stable, high-density underflow for disposal or filter press feeding
Structural Durability
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S355 structural steel tank shell
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Hot-dip galvanized rake bridge
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Corrosion-resistant internal coatings
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Heavy-duty worm-gear or planetary rake drive systems
Low Energy Consumption
Gravity-based separation ensures minimal installed power, making the system ideal for continuous 24/7 industrial operations.
Performance
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Water Recovery: Up to 85–92%
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Sludge Density: 1.05–1.4 t/m³ depending on model
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Overflow Clarity: <25–60 NTU
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Chemical Consumption: 0.03–0.10 kg/ton solids
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Operating Mode: Fully automatic
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Start-up Time: <15 minutes
Applications
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Sand Washing Plants – Removal of suspended fines from wash water
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C&D Recycling Systems – Treating water contaminated with cement fines, clay, organics, and plastics
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Mining & Minerals – Thickening tailings and process water clarification
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Industrial Wastewater – Sedimentation of solids in ceramic, chemical, metallurgical and food industries
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Filter Press Pre-Thickening – Reduces cycle time and water load on press systems