Lamella Clarifier + High-Speed DAF Solid-Liquid Separation System
A proven water treatment process combining sedimentation and flotation for high-efficiency solid-liquid separation.
Lamella Clarifier + DAF Solid-Liquid Separation System
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Process Overview
The combination of sedimentation and dissolved air flotation (DAF) is a classic and proven water treatment process. After pH adjustment (if required), coagulation, and flocculation, the influent enters the high-efficiency Lamella Clarifier, where heavier suspended solids are removed. Lighter suspended solids and colloids are then separated in the high-speed Dissolved Air Flotation (RF-DAF) system. Depending on water quality, an additional coagulation–flocculation stage may be applied before flotation.
This integrated process ensures efficient removal of both heavy and light suspended solids and colloidal matter, resulting in stable system performance and reliable protection for downstream processes.
Key Features
- Lamella Clarifier: Enhances sedimentation efficiency by 5–10 times compared with conventional clarifiers; ensures superior hydraulic flow.
- High-Speed DAF (RF-DAF): Handles high hydraulic loads with large treatment capacity; achieves high removal rates for suspended solids and oils; compact footprint saves installation space.
Process Extensions
- For lower turbidity effluent: integrate additional filtration units (sand filter, multimedia filter, etc.).
- For further COD reduction: add biological treatment, advanced oxidation, or membrane filtration units.
Sludge Management
- Settled Sludge: Collected from the Lamella Clarifier bottom by scraper, concentrated, and pumped to the sludge storage tank.
- DAF Scum: Skimmed into a scum trough and pumped to the sludge storage tank.
- Sludge Tank: Serves as storage and thickening unit. Thickened sludge is transferred to a filter press to produce dewatered sludge cakes for disposal.
- Return Liquor: Supernatant and filtrate are recycled to the process inlet for re-treatment, reducing water loss.
Applications
The Lamella Clarifier + High-Speed DAF solid-liquid separation system is widely applied in both municipal and industrial wastewater treatment. Its high efficiency and compact footprint make it an ideal choice for various industries:
- ✔️ Municipal Sewage Treatment: Enhancing primary and secondary clarification efficiency.
- ✔️ Food & Beverage Industry: Effective removal of grease, suspended solids, and organic matter.
- ✔️ Pulp & Paper Industry: Treatment of process water and recovery of fibers.
- ✔️ Electroplating & Metal Finishing: Removal of heavy metals and colloidal particles.
- ✔️ Petrochemical & Refinery Wastewater: Separation of oil, grease, and fine solids.
- ✔️ Textile & Dyeing Industry: Reduction of color, suspended solids, and organic load.
