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Chemical Oxygen Demand

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s::can spectro::lyser

Overview / Applications / Features / Specifications / Installation / Application Papers/

The s::can spectro::lyser. Flexibility and precision.

The revolutionary s::can spectro::lyser is an optical multi parameter probe. This technology allows you to measure numerous parameters that usually require the use of several different cabinet analysers. COD concentrations from g/l down to the µg/l region are calculated from the complete optical UV/Visible spectrum using an algorithm specifically calculated for your application, enabling a level of precision and long term stability that has not been possible until now. The s::can spectro::lyser can be operated in the internal data-logger mode, via PC/laptop, or via our industrial terminal "con::stat".

Eight concurrently available parameters can be set up using pre set calibrations.

All of the functions of a high quality 2-beam laboratory spectrometer are packed into the ultra-compact and robust field instrument. s::can's advanced software options allow the utilisation of both standard parameters such as COD, CODf, solids, nitrate and more plus the raw spectral information for rapid and effective investigative work on almost any liquid stream.

Applications for Waste Water/Industrial

• 0.5mm to 5mm measuring path

Applications for Drinking Water

• 35mm or 100mm measuring path
• Raw water monitoring and alarm systems
• Distribution system monitoring and management
• Control of treatment processes (filtration, activated carbon, flocculation,etc)
• Evaluation and elimination of taste and odour events
• Minimisation and elimination of chlorine
• Prediction and quantification of THM formation
• Monitoring for ultra-pure water for the pharmaceutical and electronic industries
  

Features

• Multi parametric
• Real time
• Robust and versatile
• In-situ
• Drift free
• Almost zero maintenance
• Low operation costs
• Requires no chemicals
• Portable
• On board data logging
• One step data transfer to Excel

Specifications

s::can spectro::lyser
Submersible UV/Vis Spectrometer range	200 - 730nm (2.5nm bandwidth) or 200 to 380nm (0.8nm bandwidth) with increased resolution
Light Source	Xenon Flash Lamp
Mounting	Direct insertion style with 7.5metre cable
Dimensions	Length 550mm x  Diameter 44mm
Pathlengths	0.5mm to 100mm
Cycle Time	User programmable from 5 seconds
con::stat
Display	Full colour back-lit touch-screen display of current values, spectral fingerprint and historic trends
Signal Output	1.  Multiple analog outputs 2.  Multiple digital outputs 3.  Analog input 4.  RS 485 TCP/IP LAN MODBUS / PROFIBUS GSM Modem
Range	1.  0.3 mg/l to 260 mg/l Nitrate as N 2.  DOC levels from ppb to 30000mg/l COD 3.  0.001 equiv FTU to 5000 mg/l solids via variable path length modules
Supply voltage	230V AC  10 - 30V DC Note:  integral user selectable timed sleep mode
Housing	IP65

Installation Options

• Bypass
• Pipe
• Channel
• Tank
• In-bore
• Submerged
• Sewer
  

Application Papers

SPECTRUM IS A UNIQUE MONITORING TECHNIQUE utilising UV/Vis spectroscopic analysis and flow data in addition to traditional measurements to provide wastewater characterisation TO AN UNPRECEDENTED LEVEL OF ACCURACY

Wastewater characterisation studies provide critical foundation data for the process selection, design and operation of all wastewater treatment plants. To achieve economic design of treatment processes along with continued optimisation it is imperative that accurate concentration and load data for key parameters is provided. Traditional characterisation techniques are based on a sample collection and analysis programme that utilises composite or grab samples often collected over a short timeframe. Recent advances in field instrumentation have removed many of the errors and uncertainties inherent in traditional methods.

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Determination of COD in a Meat Processing Waste Using the s::can spectro::lyser

The accurate and rapid determination of waste strength in food processing wastes is important for many reasons:

• High strength wastes and uncontrolled variability in waste strength may represent the loss of valuable product.
• Trade waste costs paid to a Water Authority are usually based on the strength of the waste discharged.  Accurate and timely measurement ensures accurate chargining.
• Knowledge of the strength  of incoming waste allows plant operators to optimise treatment processes and to verify compliance with trade waste agreements.

The s::can spectro::lyser offers an opportunity to measure COD directly on-line without the use of other chemicals.

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On-line Measurement of COD and Suspended Solids in a Brewery Waste using the s::can spectro::lyser

The accurate and rapid determination of waste strength from food manufacturing industries is important to help control the loss of valuable product and to provide accurate information on which trade waste limits and charges can be checked.  The s::can spectro::lyser offers the opportunity to rapidly study the effect of treatment over a full range of wavelenths, at multiple sites without having to wait for laboratory data.

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For other possibilities for inlet concentration monitoring please email us or phone to discuss your application.