Clarifiers
Primary and secondary sedimentation equipment for STPs, ETPs, and water treatment — available as standalone Clarifiers and combined Clariflocculators in MS, MS+FRP, and SS304.
Clarifiers are essential components in the treatment of water and wastewater, used primarily for the removal of suspended solids and to improve the overall quality of treated water. A clarifier is a settling tank that removes solid particulates from liquids through sedimentation — heavier particles settle to the bottom forming sludge, while cleaner water exits from the top.
AIRFIN Clarifiers are commonly used in both primary and secondary treatment stages in sewage treatment plants and industrial water treatment. The circular design features a central feed well for uniform flow distribution, a slow-speed rake mechanism for continuous sludge removal, and adjustable weir plates for precise effluent level control.
Also available as a Clariflocculator, which combines the processes of flocculation and clarification in a single unit. In a Clariflocculator, coagulation occurs in a central zone where coagulants are added, and the coagulated effluent then flows into the outer clarification zone for settling. This combined approach reduces equipment footprint and simplifies the treatment process.
Available in Mild Steel (MS), MS+FRP, and Stainless Steel (SS304), each unit is custom-fabricated to site-specific flow rates, retention times, and footprint constraints. Applications include municipal water treatment, primary treatment in ETPs, sludge thickening, and secondary clarification following biological treatment processes such as activated sludge and MBBR.
Key features
- Settling tank designed to remove solid particulates from liquids through gravity sedimentation
- Heavier particles settle to the bottom forming sludge while cleaner water exits from the top
- Available as standalone Clarifier or combined Clariflocculator in a single unit
- Clariflocculator combines flocculation and clarification — coagulants are added in a central zone and coagulated effluent flows into the clarification zone
- Suitable for both primary and secondary treatment stages in sewage and industrial water treatment
- Available in Mild Steel (MS), MS+FRP, and Stainless Steel (SS304) as per requirement
- Circular design with central feed well and peripheral overflow weir for uniform flow distribution
- Slow-speed rake mechanism for continuous sludge removal from the tank floor
- Adjustable weir plates for precise effluent level control
- Designed for continuous operation with minimal operator intervention
- Scalable design from small ETPs to large municipal STPs
- Custom-fabricated to site-specific flow rates, retention times, and footprint constraints
Outcomes
- Effective removal of suspended solids through gravity sedimentation in primary and secondary stages
- Clariflocculator option reduces equipment footprint by combining two process steps in one tank
- Multiple MOC options — MS, MS+FRP, and SS304 — to suit budget and corrosion requirements
- Applicable across municipal water treatment, ETP primary treatment, and sludge thickening duties
- Custom fabrication ensures each unit is optimised for the specific site and process conditions
Who it's for
Municipal sewage treatment plants (STPs), industrial effluent treatment plants (ETPs), water treatment installations, and any facility requiring sedimentation-based removal of suspended solids from water or wastewater. Also used as sludge thickeners in sludge handling systems.
Applications
Municipal water treatment
Primary and secondary sedimentation in municipal water and sewage treatment plants for suspended solids removal.
Primary treatment in ETP
First-stage solids separation in industrial effluent treatment plants across diverse manufacturing sectors.
Sludge thickening
Concentration of dilute sludge streams to reduce volume before dewatering or disposal.
Sewage treatment plants
Settling of biological floc in secondary clarifiers following activated sludge or MBBR processes.
Food & beverage industry
Removal of organic solids and suspended matter from food and beverage process wastewater.
Chemical & process industries
Clarification of process water and effluent in chemical manufacturing and process plants.
Focus areas
- Waste Water Treatment
- Engineering & Fabrication