Sedimentation Tank – HydraNexis HNX 11

The Sedimentation Tank (HydraNexis HNX 11) by SCIENTICO is a laboratory-scale pilot unit for studying sedimentation, hydraulic flow behavior, and solid–liquid separation. With controlled slurry preparation, tracer injection, and precise flow regulation, it is ideal for teaching, research, and water treatment process development.

The Sedimentation Tank Pilot Plant (HydraNexis HNX 11) by SCIENTICO is a laboratory-scale experimental system designed to demonstrate gravity sedimentation and hydraulic behavior in settling tanks. The unit enables controlled studies of flow patterns, solid-liquid separation efficiency, and hydraulic performance under different operating conditions.
Product Overview
  Sedimentation is a fundamental unit operation in water and wastewater treatment for removing suspended solids. The HydraNexis HNX 11 provides a controlled environment to study settling tank hydraulics, sediment removal, flow regimes, and dispersion effects. Feed water is supplied from the laboratory mains and measured using a flow meter. A slurry with known concentration is prepared in a sump tank and injected into the fresh water stream before entering the settling tank. Continuous stirring in the sump tank prevents solids from settling before entering the sedimentation tank. A dye injection system enables hydraulic tracer studies, allowing visualization of flow patterns, short-circuiting, and dead zones. The system supports comparative analysis using Imhoff cones or sedimentation research devices.

Mechanical & Operational Data

Parameter Specification
Feed Tank Capacity 120 L
Settling Tank Material Acrylic
Settling Tank Dimensions 1.05 m × 0.35 m × 0.2 m
Fresh Water Flowmeter 1–36 LPM
Slurry Flowmeter 1–100 LPH
Pump Flow Rate 60 L/min @ 15 m head
Stirrer Speed 0–300 RPM
Mains Water Flow Range 0.5–5.0 L/min
Slurry Flow Range 0–2 L/min

Key Features

  • Transparent acrylic sedimentation tank for full visual observation
  • Separate sump tank for slurry preparation
  • Centrifugal pump for controlled slurry feeding
  • Bypass discharge line to keep slurry in continuous suspension
  • Dual flowmeter system (fresh water + slurry)
  • Integrated stirrer in sedimentation tank
  • Precision dye injection system for tracer studies
  • Stable hydraulic inlet conditions via inlet weir design
  • Designed for laboratory and teaching use

Experiments & Learning Outcomes

  • Measurement of flow short-circuiting and dead space using tracers
  • Comparison of real flow regimes with idealized flow models
  • Effect of flow rate and baffle position on dispersion
  • Measurement of sediment removal efficiency
  • Correlation of hydraulic characteristics with separation efficiency
  • Effect of solid concentration on sedimentation performance
  • Use of Imhoff cones for sedimentation analysis

Process Capabilities

  • Continuous sedimentation testing
  • Solid–liquid separation analysis
  • Hydraulic flow characterization
  • Tracer studies and visualization
  • Dispersion and baffle influence studies

Construction & System Design

The HydraNexis HNX 11 is engineered for hydraulic accuracy, repeatability, and visual learning. The transparent tank design allows real-time observation of settling zones, sludge formation, and flow patterns. The modular slurry system ensures stable feed concentration, while independent flow control enables precise experimental conditions.

Scope of Delivery

  • 1 × Sedimentation Tank Experimental Unit
  • 1 × Instruction Manual

Applications

  • Water treatment and wastewater treatment education
  • Environmental engineering laboratories
  • Research on sedimentation dynamics
  • Clarifier and settling tank design studies
  • Operator training and process optimization
  • Hydraulic modeling and tracer experiments

 

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