Sonar Level Interface Principle of Operation
The HAWK Sultan Sonar uses Advanced Sonar Technology to measure and
control Waste Water Clarifiers and Thickeners.
The system is easy to use and the innovative design provides critical plant control
to optimize performance.
In the water, wastewater industry process conditions will vary greatly between a
primary sedimentation tank, secondary / final
clarifier, and a gravity thickener. Thickener bed levels, secondary RAS blanket,
flocculent blanket, etc, all have different densities and
the water above these interface levels are subject to different process conditions
that change.
To optimize performance in each interface application under all process
environments:
HAWK has developed a powerful low-frequency transducer to penetrate through the
suspended solids and is capable of measuring the
sludge bed level at the bottom of a clarifier or the lightest flocculent layer.
To optimize performance under all process environments in each interface
application:
HAWK uses one transducer with a frequency and power level that is applicable to the
density of the interface and process conditions
expected in the tank. HAWK can guarantee performance for controlling pumps etc,
rather than for monitoring purposes only.
Value Added Benefits
- Improved efficiency and control of the treatment process
- Fully automated plant systems with reliable sludge blanket level monitoring
- Advanced warning of biological upset or hydraulic imbalance
- Reduced maintenance with 5 year cleaning mechanism warranty (no blades to replace)
- Reduced site operational costs significantly with improved process control for downstream operations
- Improved health and safety on site with compliance to OSHA regulations (no manual dips required).
Primary Application Areas
Water & Wastewater:
- Primary Sedimentation – Blanket level
- Secondary and Final Clarifiers – RAS Blanket layer
- Sequential Batch Reactors – Blanket monitoring (floating sonar)
- Lagoons – Sludge Bed Level
- Lamella Clarifier – Sludge Bed Level
- Filtration
- Gravity Filtration
- Gravity Settling.
Features
- User friendly configuration to track specific densities
- Tune Sensor to 5 preset factory densities or fine tune to the required density in-situ
- Sonar transducer developed to optimize detection of heavy and light density interfaces
- Easy calibration to track specific density interfaces, eg: RAS blanket - 4g/l, floc / fluff layer - 1g/l, Bed 10g/l+
- Industrial scum cleaning mechanisms that do not require maintenance
- No wiper blade assemblies
- Wide range of communications: Modbus, HART, Foundation Fieldbus, DeviceNet, Profibus DP and Profibus PA
- 3G remote support capability for calibration, commissioning or technical back-up from HAWK Service Engineer
- 5 Relay alarms
- 1640 feet (500 metre) separation possible between transducer and Sultan Sonar transmitter.
Typical Applications
| Area | Functions |
|---|---|
| Water Treatment Plant | |
| Primary Sedimentation Tank | Floc level / sludge blanket level |
| Sludge Thickener Tank | Sludge bed level / suspended solids / floc level |
| Calcium Hydroxide Reactor | Sand / pellet bed level |
| Sodium Hydroxide Reactor | Sand / pellet bed level |
| Sewage Treatment Plant | |
| Primary Sedimentation Tank | Sludge blanket level |
| Secondary / Final Clarifier | RAS blanket level / rag/pinfloc layer / suspended solids |
| Sludge Thickener Tank | Sludge bed level / suspended solids |
| “DAF” Tank | Sludge bed level / floating sludge level |
| Sequential Batch Reactor (SBR) | Settling bed level / RAS blanket level |
| Industrial (food, paper etc.) | |
| Primary Sedimentation Tank | Primary Sedimentation Tank |
| Secondary Clarifier Tank | RAS blanket level / suspended solids / rag/pinfloc layer |
| Thickener Tank | Sludge bed level / clarity suspended solids / floc level |
| Sequential Batch Reactor (SBR) | Settling blanket level / RAS bed level |
| Carbon Column | Carbon bed level |