Paddle Flocculator

A Paddle Flocculator is a key piece of equipment used in water and wastewater treatment processes to promote flocculation – the gentle mixing of coagulated particles to form larger aggregates (flocs) that can be easily separated through sedimentation or filtration. Designed for optimal energy efficiency, uniform mixing, and controlled shear, paddle flocculators are widely used in municipal, industrial, and process water treatment applications.

 

At Verito, we offer robust, efficient, and customizable paddle flocculators engineered for reliable operation under varying process conditions. Our designs focus on performance, durability, ease of maintenance, and energy optimization.

 

 

 

Working Principle

The paddle flocculator operates by imparting controlled, low-intensity mixing energy to facilitate the collision and agglomeration of particles in the water. Coagulants added upstream cause destabilization of fine particles, and the paddle flocculator ensures uniform distribution and sufficient contact time for particles to form flocs.

Key principles involved include:

  • Shear Rate Control Gentle mixing avoids floc breakage while allowing particle contact.
  • Energy Input (G-value) Ensures optimal energy transfer per unit volume for effective flocculation.
  • Residence Time Adequate retention within the flocculator allows full floc formation.
  • Flow Uniformity Prevents dead zones or short-circuiting, promoting consistent treatment.

Design Features

Paddle Design

  • Multi-blade, high-efficiency paddles manufactured from SS304/SS316 or FRP depending on process requirements.
  • Designed for optimal flow pattern ensuring uniform mixing and preventing vortex formation.
  • Adjustable angle paddles to customize shear and mixing intensity as per process conditions.

Shaft & Support

  • Shaft support through sealed bearings to ensure smooth rotation and reduce maintenance.
  • Custom lengths based on tank dimensions and flow rates.

Drive Mechanism

  • Direct coupled or gear-reduced drives using energy-efficient motors.
  • Variable frequency drives (VFDs) for speed control and energy optimization.
  • Explosion-proof motors where hazardous environments are involved.

Tank Integration

  • Mounted within open channels, concrete basins, or fabricated steel tanks.
  • Configured for side-entry, top-entry, or center shaft depending on layout and application.
  • Designed for easy access, inspection, and maintenance.

Material Selection

  • Contact parts made from corrosion-resistant stainless steel (SS304/SS316), epoxy-coated carbon steel, or FRP.
  • Seals and bearings suited for the operating environment to withstand chemicals and sludge conditions.

 

 

Technical Specifications

 

Parameter Typical Range / Details
Paddle Width Custom up to 5000 mm
Shaft Material SS304 / SS316 / Carbon Steel (epoxy coated)
Paddle Material SS304 / SS316 / FRP
Bearing Type Heavy-duty sealed bearings
Drive Type Electric motor with VFD control
Mounting Top-entry, side-entry or center shaft
Application Area Municipal water, wastewater, industrial effluent treatment, chemical processing, desalination

 

Applications

 

 

  • Drinking Water Treatment Plants - For coagulation and flocculation stages before sedimentation.
  • Wastewater Treatment Plants - Enhancing solids separation efficiency.
  • Industrial Effluents - Chemical, food & beverage, pharmaceutical, pulp & paper industries.
  • Desalination Units - Pre-treatment process for suspended solids removal.
  • Cooling Towers - Assisting in scale and particulate removal.
  • Sludge Handling Systems - Supporting thickening processes.

Advantages of Paddle Flocculator

 

  • Efficient Floc Formation- Uniform energy distribution promotes faster and stable floc growth.
  • Low Energy Consumption- Adjustable paddle speeds and VFDs allow precise energy control.
  • Minimal Maintenance- Robust bearings, shaft seals, and corrosion-resistant materials reduce downtime.
  • Customizable- Tailored designs for specific process needs, flow rates, and basin geometries.
  • Enhanced Process Control- Ability to regulate shear forces and mixing intensity for optimum results.

Why Choose Verito Paddle Flocculators?

 

  • Over 20+ years of experience in process equipment design.
  • Custom-engineered solutions to meet unique process requirements.
  • High reliability, precision engineering, and global standards compliance.
  • Comprehensive support from design to commissioning.
  • Focused on energy efficiency, environmental safety, and long-term performance.

Contact Us

 

For detailed consultation, customized design support, or to request technical data sheets and pricing, reach out to our experts at Verito. We help you build smarter, more efficient, and sustainable water and wastewater treatment systems with reliable paddle flocculators tailored to your needs.

 

 

Know more about mixing Technology

 

These mixer agitators are comes in several specifications as per the need of our customers. The offered mixer agitators are tested from our end in order to deliver a defect free range to customer's end. Our mixer agitators are developed with quality material under the direction of skilled professionals.

 

We ensure the highest quality & performance of our Agitators. At the same time, we have a very strong performance track record of supplying various types of agitators for various applications.

 

Ask more to our Agitator Design Experts

 

  • Tip Speed
  • Pumping Capacity
  • Detention Time
  • ChemScale
  • Velocity gradient
  • Torque
  • Specific Power
  • Material of Construction

 

Agitator Manufacturing Champions

 

  • Accuracy of Machining
  • Lathe Machine, CNC, VMC
  • Qualified & Approved Welding Procedures

 

Tests Conducted by the Verito Quality Specialties

 

Performance
  • Run Trail
  • Noise
  • Vibration
  • RPM
  • Current
Dimensional
  • Run Out
  • DFT
  • Dimensions
  • Dynamic & Static Balancing
Chemical & Mechanical
  • UT
  • PMI
  • DP
  • PT

 

Final Assembly

 

  • We care about the Aesthetics of our Products

 

CFD in Mixing Technology
What is CFD ?

 

  • Computational Fluid Dynamics (CFD) represents an approved approach within the realm of fluid mechanics. Its widespread application is evident in industries such as automotive, aircraft, process, and mixing.
  • The primary objective of CFD is to address fluid flow-related inquiries by leveraging numerical techniques. The governing equations typically revolve around principles like Navier-Stokes, Euler, or potential-based equations.

 

Flow Simulation at Verito

 

  • Verito leverages cutting-edge Computational Fluid Dynamics (CFD) technology, alongside laboratory experiments and field trials, to design, scale-up, enhance, or modernize agitators and mixing systems.
  • Verito’s engineers utilize CFD technology to gain an in-depth understanding of velocity distribution, flow patterns, areas with low velocity (referred to as dead zones, as illustrated in Figures 1, 2 & 3), as well as regions with both low and high shear rates within various mixing system configurations.
  • This enables the testing of multiple system setups and tank agitator designs to achieve optimal performance. Additionally, CFD technology aids Verito in fine-tuning impeller blade designs to strike a balance between power requirements and pumping capacity.

 

Key Outcomes of CFD-Studies

 

  • In-depth Information of Flow pattern
  • Areas with the potential of low mixing intensity can be pinpointed and rectified.
  • Availability of crucial process parameters like shear and energy dissipation
  • Evaluation of different design options
  • Shortened project timelines for complex process mixing systems
  • Mitigation of project risks
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