Flocculation Test Unit – HydraNexis HNX 10

The Flocculation Test Unit (HydraNexis HNX 10) by SCIENTICO is a six-station jar test system for determining optimum coagulation and flocculation conditions. With independent variable-speed stirrers, digital control, and flexible operation, it is ideal for laboratory studies, plant optimization, and educational training in water treatment technology.

The Flocculation Test Unit (HydraNexis HNX 10) by SCIENTICO is a compact, bench-top laboratory system designed for coagulation and flocculation (jar test) studies, which are essential preliminary tests before designing or optimizing water and wastewater treatment plants. The unit enables simultaneous testing under controlled and repeatable conditions to determine optimal treatment parameters. Product Overview Before full-scale implementation of a water or wastewater treatment process, coagulation and flocculation tests are carried out to determine the most effective chemical dosages, pH conditions, and mixing regimes. The HydraNexis HNX 10 allows these evaluations through six parallel jar tests, providing reliable comparative results in a single experimental run. Jar tests are widely used in treatment plants to optimize daily operations. They help identify:
  • Optimum coagulant dosage
  • Required pH adjustment
  • Effectiveness of activated carbon addition
  • Floc formation rate and settleability
  • Water clarity and filter run performance
The system enables the study of flocculation kinetics, aggregation rate as a function of energy input (stirrer speed), floc settleability, and filterability index. Each vessel is equipped with an independently controlled stirrer, allowing precise adjustment of mixing speed and intensity. All paddle shafts are made of stainless steel to prevent corrosion. The stirrer assemblies are removable, making it easy to remove beakers, clean the system, and prepare for subsequent experiments. Integrated LED illumination and a digital touch LCD control panel enhance visibility and ease of operation.
Parameter Specification
Stirrer Speed Range 0–300 RPM
Paddle Blade Dimensions 50 mm × 15 mm
Number of Test Stations 6
Beaker Volume 6 × 1000 mL
Test Tube Capacity 16 mm × 150 mm

Key Features

  • Bench-top coagulation and flocculation test unit
  • Six independent variable-speed stirrers
  • Digital touch LCD display and control
  • Integrated LED illumination
  • Adjustable stirring blade height during operation
  • Removable stirrer assemblies for easy cleaning
  • Stainless steel paddle shafts for corrosion resistance
  • Built-in timer function
  • Low-voltage operation via universal power supply for enhanced safety

Experiments & Learning Outcomes

  • Determination of optimum coagulant dosage
  • Determination of optimum pH value
  • Effect of mixing time and mixing intensity on floc formation
  • Coagulation and flocculation with activated carbon
  • Coagulation tests combined with filterability studies

Process Capabilities

  • Coagulation and flocculation (jar testing)
  • Optimization of chemical dosage and pH
  • Evaluation of mixing intensity and duration
  • Study of floc settleability and filterability

Construction & System Design

The HydraNexis HNX 10 is designed for laboratory durability, precision, and user convenience. Independent drives ensure reproducibility of results, while the modular stirrer assemblies simplify operation and maintenance. The compact footprint makes it ideal for teaching laboratories, research facilities, and treatment plant testing rooms.

Software (Optional)

HNX 10SW (Optional DAQ Software)

  • Developed in National Instruments™ LABVIEW™ environment
  • Enables data measurement, logging, and analysis
  • Compatible with Windows™ operating systems
  • Supplied with electronic sensors when selected

Scope of Delivery

  • 1 × Flocculation Test Experimental Unit
  • 1 × Instruction Manual

Applications

  • Water and wastewater treatment plant design
  • Process optimization and operational control
  • Academic teaching and laboratory demonstrations
  • Research on coagulation and flocculation kinetics
  • Training of plant operators and engineers

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