Depth Filtration Unit – HydraNexis HNX 09
The Depth Filtration Unit ( ) by SCIENTICO is a laboratory-scale pilot plant designed to demonstrate the fundamental principles of depth filtration and backwashing in water treatment. Made by Scientico India, ISO 9001:2015 certified, and supplied with a calibration certificate and operation manual.
Product Overview
Depth filtration is one of the most critical unit operations in water treatment. In the HydraNexis HNX 09, raw water containing suspended particles (e.g., prepared using diatomite) is pumped from the top into a vertical filter column. As the water flows downward through the filter bed, particles are retained within the depth of the media, and clarified water (filtrate) exits at the bottom into a collection tank. As solids accumulate within the filter bed, flow resistance increases, resulting in a measurable pressure drop between the inlet and outlet. This progressive pressure loss leads to reduced flow rates, clearly demonstrating filter clogging behavior. The unit allows restoration of filter performance through backwashing with treated water, during which bed fluidization and expansion can be observed. Multiple pressure tapping points along the filter bed are connected to tube manometers, enabling visualization of pressure distribution and plotting of Micheau diagrams. The system supports precise measurement of flow rate, temperature, system pressure, and differential pressure. Filter bed height is directly readable, and flow velocity can be adjusted to study its effect on filtration and backwashing performance. Optional data acquisition software allows control of operating states and real-time display of measured data on a process flow diagram.Request Specifications & Pricing
model-specific, ISO 9001:2015 compliant. Supplied to universities and institutions in 30+ countries.
WhatsApp: +91 701-586-5225 | Email: [email protected]
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| Component | Specification |
|---|---|
| Filter Inside Diameter | 100 mm |
| Filter Total Height | 1000 mm |
| Max. Filter Bed Height | ~700 mm |
| Pump | Max. Flow Rate | Max. Head |
|---|---|---|
| Raw Water Pump | 150 L/min | 10 m |
| Backwash Pump | 40 L/min | 10 m |
| Tank Type | Capacity |
|---|---|
| Raw Water Tank | ~180 L |
| Treated Water Tank | ~180 L |
| Parameter | Range |
|---|---|
| Flow Rate | 1–7 LPM |
| System Pressure | 1 × 0–1 bar |
| Pressure Distribution | 10 × 0–1000 mmWC |
| Differential Pressure | –1 to +1 bar |
| Temperature | –100 to 400 °C |
Instrumentation includes:
- Electromagnetic flow rate sensor
- Differential pressure measurement
- 10 tube manometers for pressure profiling
- Multiple sampling points
Key Features
- Demonstration of depth filtration and backwashing
- Visualization of pressure loss along the filter bed
- Plotting of Micheau diagrams
- Adjustable filter bed height and flow velocity
- Observation of fluidization during backwash
- Motorized ball valves for controlled operation
- Clear, laboratory-friendly vertical design
- Optional DAQ and process visualization software
Process Capabilities
- Depth filtration of particle-laden water
- Observation of pressure loss development
- Backwashing and filter bed regeneration
- Fluidization and expansion studies of filter media
Experiments & Learning Outcomes
- Analysis of pressure conditions inside a filter bed
- Study of pressure loss according to Darcy’s law
- Effect of flow rate, bed height, and permeability
- Determination of pressure profiles (Micheau diagrams)
- Backwashing studies: 1. Observation of fluidization 2. Measurement of filter bed expansion 3. Determination of fluidization velocity
Construction & System Design
The HydraNexis HNX 09 is designed for durability, clarity, and educational effectiveness. The vertical filter column allows direct observation of bed behavior, while the manometer array provides an intuitive visualization of internal pressure distribution. The system layout ensures easy operation, safe backwashing, and repeatable experimental results in teaching and research environments.
Required for Operation
- Water connection
- Drain connection
- Filter media (gravel, diatomite – supplied)
Scope of Delivery
- 1 × Depth Filtration Experimental Unit
- 1 × Set of hoses
- 1 × Packing unit of gravel
- 1 × Packing unit of diatomite
- 1 × Instruction manual
Applications
- Water and environmental engineering laboratories
- Demonstration of filtration theory and practice
- Training in pressure loss and filter operation
- Research on filter media behavior and backwashing
- Academic and industrial training programs
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