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Aquascan
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Aquascan - Introduction• Aquascan is an online instrument capable
of simultaneous multi-parameter measurement for a full range of water quality parameters.
• Developed by Hyder Consultancy in the early 1990’s.
• In 1996 Siemens purchase manufacturing rights and undertake further development of product.
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Common Problems Reported by Users of conventional
on - line analysers
• Sampling - Sample lines, Internal tubing
• Filtration - Lost sample, maintenance
• Reagents - Cost and H & S Risk
• Sample Size - Sample often l volumes
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Customer Feedback
Ideal Continuous Monitor
• Trend Monitor for Early Warning
• No sample Pre-treatment
• Rapid Response
• Reagent Free
• Low Maintenance
• Low Cost of Ownership
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Direct measurements :-• pH
• Sample Temperature (deg C)
• Conductivity (uS)
• UV254 Absorption
• UV313 Absorption
• UV405 Absorption
• Infra Red Absorption
• Infra Red scatter
• Ion Selective Electrode (Ammonium)
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Flow cell plate
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Temperature Probe
pH Sensor
Conductivity Sensor
Sample Inlet
Sample Outlet
IR Scatter Sensor
IR Abs Sensor
IR Source
UV SensorsWash Water Inlet Wash Water Outlet
Wash ram
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UV lamp UV lamp housingISE mounting
Focusing lenses Window
Sample flow
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Derived parameters :-
• Biochemical Oxygen Demand (mg/l)
• Chemical Oxygen Demand (mg/l)
• Total Organic Carbon (mg/l)
• Ammonia (mg/l)
• Total Suspended Solids (mg/l)
• Turbidity (NTU)
• Colour (Hazen)
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Sample
Drain
Debubbler
Vent
WaterSupply
WaterContainer
BiocideContainer
P
High PressurePump
BiocidePump
Drain
Flowcell
Drain
CalibrationPump
SamplePump
Sample Cycle
Sample Cycle
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Sample
Drain
Debubbler
Vent
WaterSupply
WaterContainer
BiocideContainer
P
High PressurePump
BiocidePump
Drain
Flowcell
Drain
CalibrationPump
SamplePump
Cleaning Cycle Jet Wash
Cleaning Cycle Jet Wash
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Sample
Drain
Debubbler
Vent
WaterSupply
WaterContainer
BiocideContainer
P
High PressurePump
BiocidePump
Drain
Flowcell
Drain
CalibrationPump
SamplePump
Clean Cycle Ram Return
Cleaning Cycle Ram Return
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Sample
Drain
Debubbler
Vent
WaterSupply
WaterContainer
BiocideContainer
P
High PressurePump
BiocidePump
Drain
Flowcell
Drain
CalibrationPump
SamplePump
Calibration Cycle
Calibration Cycle
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Display
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Aquascan Correlation COD
R2 = 0.98
0
200
400
600
800
1000
0 200 400 600 800 1000
Aquascan COD (mg/l)
La
bo
rato
ry C
OD
(m
g/l
)
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Aquascan Correlation BOD
R2 = 0.96
0
100
200
300
400
0 100 200 300 400
Aquascan BOD (mg/l)
Lab
ora
tory
BO
D (
mg
/l)
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Aquascan current installations
• Yorkshire Water Waste Water Treatment - Final Effluent Monitoring
• Hyder Industrial Waste Water Treatment - Final Effluent Monitoring
• Great Marsh (Fuel additives) Groundwater Monitoring • Arjo Wiggins (Paper Manufacture) Effluent & In-process
Monitoring• Stevensons (Textile Manufacture) Effluent Monitoring• Irish Distillers (Brewery) Effluent Monitoring• ICG (Norway) River Monitoring• Rockbourne Environmental (Landfill) Landfill Leachate Monitoring
• Hyder Waste Water Treatment - Inlet Monitoring• Lyonnaise des Eaux, France Waste Water Treatment - Inlet
Monitoring• Bournemouth & West Hants Water River Monitoring• Dynachem Effluent Monitoring
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Environmental Protection
• Consent monitoring
• Historical data
• Public image
• Responsible behaviour
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Textile Company
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Culvert
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Power Station Cooling Water
Local Wastewater Treatment
PlantFinal Effluent
Intake
Control Dosing
Control
Return cooling water
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Brewery
Sample inlet Capacity 200l min
Header tank
15l/min@5 m head
Pump
overflow
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Engine Manufacturer
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Dairy Products - Milk
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Landfill leachate
Batch
Sequence
ReactorSample pit
Effluent Treatment
Final Effluent
leachate
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Process Monitoring
• Process Optimisation
• Discharge Savings
• Intake protection
• Environmental Protection
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River monitoring
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Aquascan Process Alarm
Alarms Consent Limit
High Alarm
Warning
Parameter Concentration
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Aquascan Configuration
Pump
Effluent channel or
pipe
Flow or Other
Analyser Input
Analogue Outputs
Alarm Output
110/240v
Clean Water
Communications
Sample
Waste
I/F
I/F
Aquabase
Aquascan
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Aquascan sample float
FLOW
Sample IN
Sample OUT
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Aquascan inlet monitoring
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Aquascan sample lance
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Sample Inlet - Hockey stick perforated lance
Lance
Brackets
Flow
<20m
Aquascan
Drain
Sample
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Aquascan Multi channel option
Aquascan Multistream : Wiring -Configuration A
AQ U ASC AN
M ultis treamC ontro ller
Valve 1Valve 2Valve 3
Valve Cables
Comms Cable(F itted at Aquascan end)
AQ U ASC AN
M ultis treamC ontro ller
Valve 1Valve 2Valve 3
110V 16A S ing lePhase P lug
(F itted)
Aquascan Multistream : Plumbing -Configuration A
"C ross - Equal F itting with1/2" BSP Female sockets
at a ll ends & 4 off 1 /2" BSPHoseta il adapters
Strainersinserted into
Sam ple S tream s
1 2 3
Sample in let hose
All sam ple hose is 12.5m m bore opaque sam ple tubew ith low fouling in ternal surface 915/4/10167/001.R efer to a ttached graph for m ax suction head vs
horizonta l d is tance.
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Aquascan Configuration
Pump
Effluent channel or
pipe
Flow or Other
Analyser Input
Analogue Outputs
Alarm Output
110/240v
Clean Water
Communications
Sample
Waste
I/F
I/F
Aquabase
Aquascan
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Aquascan Services
• Power Supplies– 110 -115Vac 50Hz, rated 600 VA– 220 - 230Vac 50Hz, rated 600VA
• Water Supplies– Clean water if available– Internal 30l container; replenish as required
• Drain– Local floor drain or gravity return to process
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Aquascan Service and Maintenance
• Designed for minimum maintenance – Accept whole samples with up to 3mm in size particles– Programmable automatic wash cleaning cycles
• Routine Check: approximately 1 hour per month– Check condition of peristaltic sample pipes– General inspection
• Service Interval: every Three months– Engineer visit– Calibration check
•