Aquascan

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.

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

Customer Feedback

Ideal Continuous Monitor

• Trend Monitor for Early Warning

• No sample Pre-treatment

• Rapid Response

• Reagent Free

• Low Maintenance

• Low Cost of Ownership

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)

Flow cell plate

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

UV lamp UV lamp housingISE mounting

Focusing lenses Window

Sample flow

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)

Sample

Drain

Debubbler

Vent

WaterSupply

WaterContainer

BiocideContainer

P

High PressurePump

BiocidePump

Drain

Flowcell

Drain

CalibrationPump

SamplePump

Sample Cycle

Sample Cycle

Sample

Drain

Debubbler

Vent

WaterSupply

WaterContainer

BiocideContainer

P

High PressurePump

BiocidePump

Drain

Flowcell

Drain

CalibrationPump

SamplePump

Cleaning Cycle Jet Wash

Cleaning Cycle Jet Wash

Sample

Drain

Debubbler

Vent

WaterSupply

WaterContainer

BiocideContainer

P

High PressurePump

BiocidePump

Drain

Flowcell

Drain

CalibrationPump

SamplePump

Clean Cycle Ram Return

Cleaning Cycle Ram Return

Sample

Drain

Debubbler

Vent

WaterSupply

WaterContainer

BiocideContainer

P

High PressurePump

BiocidePump

Drain

Flowcell

Drain

CalibrationPump

SamplePump

Calibration Cycle

Calibration Cycle

Display

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

)

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)

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

Environmental Protection

• Consent monitoring

• Historical data

• Public image

• Responsible behaviour

Textile Company

Culvert

Power Station Cooling Water

Local Wastewater Treatment

PlantFinal Effluent

Intake

Control Dosing

Control

Return cooling water

Brewery

Sample inlet Capacity 200l min

Header tank

15l/min@5 m head

Pump

overflow

Engine Manufacturer

Dairy Products - Milk

Landfill leachate

Batch

Sequence

ReactorSample pit

Effluent Treatment

Final Effluent

leachate

Process Monitoring

• Process Optimisation

• Discharge Savings

• Intake protection

• Environmental Protection

River monitoring

Aquascan Process Alarm

Alarms Consent Limit

High Alarm

Warning

Parameter Concentration

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

Aquascan sample float

FLOW

Sample IN

Sample OUT

Aquascan inlet monitoring

Aquascan sample lance

Sample Inlet - Hockey stick perforated lance

Lance

Brackets

Flow

<20m

Aquascan

Drain

Sample

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.

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

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

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

•