As a high-efficiency solid-liquid separation equipment, Lamella Clarifier is widely used in water treatment, mining and industrial wastewater treatment. Its core design feature, the introduction of the inclined plate assembly, significantly improves the efficiency of the traditional sedimentation process by optimizing the fluid mechanics and sedimentation dynamics.
1. Expanding the effective sedimentation area
The inclined plates are arranged in parallel in multiple layers, converting the vertical sedimentation of the traditional sedimentation tank into a shallow sedimentation mode with multiple planes superimposed. The horizontal projection area of each layer of inclined plates is accumulated to form a total effective sedimentation
area, which can theoretically reach dozens of times that of a horizontal flow sedimentation tank with the same floor space. This design reduces the floor space requirement by 90%, optimizes the particle sedimentation path through Stokes' law, and exponentially improves the separation efficiency of suspended matter.
2. Laminar hydraulic regulation
The inclined plate unit divides the water flow into thin-layer flow channels (usually 8-10cm), greatly reducing the hydraulic radius to below the critical value (Re＜500), and forcing a stable laminar flow state. Combined with the 60° inclination design, the turbulent vortex and backmixing phenomenon are effectively suppressed, and the coordinated control of the Froude number (Fr) and the Reynolds number (Re) is achieved, ensuring that the particles complete the sliding sedimentation in a low-disturbance environment.
3. Micro-sedimentation acceleration effect
The narrow flow channel formed between the inclined plates shortens the particle sedimentation distance to the vertical component of the plate spacing (about 6-8cm), which is 1-2 orders of magnitude lower than the sedimentation path of several meters deep in the traditional sedimentation tank. According to the calculation of the Hazen-Camp modified model, this structure can shorten the theoretical sedimentation time to 1/15-1/20 of the original working condition, meeting the rapid treatment requirements of high-load water bodies.
4. Dynamic anti-blocking structure design
The 60° inclination of the inclined plate assembly can induce the settled sludge to slide along the plate surface to the sludge collection area autonomously by adopting the asymmetric flow channel cross-section and periodic backwashing coupling strategy, avoiding the risk of sludge accumulation in the horizontal plate structure. The anti-biological attachment surface treatment process of the modular PVC plate (6mm thickness) combined with the bottom high-pressure backwash nozzle array forms a three-level anti-blocking protection mechanism to ensure that the continuous operation cycle exceeds 8,000 hours.
5. Engineering durability optimization
Based on finite element mechanical analysis, the inclined plate component adopts a rigid PVC and fiberglass reinforced composite structure with a bending strength of more than 120MPa and can withstand pH 2-12 corrosion environment. The modular embedded design with quick-release interface can realize single-board replacement without stopping the machine, and the maintenance time is reduced by 70% compared with the traditional welded structure, and the life cycle cost is reduced by more than 40%.
Conclusion
Lamella Clarifier realizes technology integration in the fields of fluid dynamics optimization, material engineering and modular manufacturing through the innovative design of the inclined plate component, providing a solution for modern water treatment processes that combines efficiency, compactness and reliability. Its design concept has universal guiding significance for solid-liquid separation engineering in water bodies with high suspended matter concentrations.
