Water/Wastewater 35
The Future Requirements for Oceanographic Instrumentation
Richard Burt, Sales & Marketing Director, Chelsea Technologies (UK) addressed the Fifth Intergovernmental Oceanographic Commission Global Conference on Oceans, Coasts and Islands on the future of oceanographic sensors and technology and shared his vision of future developments.
In a session to commemorate the 50th anniversary of the IOC, Richard outlined that oceanographic instrumentation has traditionally been developed within
academic centres of excellence in order to provide answers to challenging scientific questions. There are many examples of industry working with scientists to commercialise these technologies and make them available on a global scale, such as the Chelsea AQUAshuttle and SeaSoar towed oceanographic vehicles.
Richard went on to say that environmental sensors can be categorised as measuring physical, chemical, or biological properties. Physical sensor technologies are the most mature, with well-established field-deployable sensors for a number of oceanographic parameters such as temperature, pressure, salinity, light and turbidity. However, there exists only limited capabilities for field-deployable chemical sensors (e.g., dissolved oxygen, pH, redox state) and biological sensors to provide key information on the production, structure, and composition of biologically influenced ecosystems in real time.
The need to provide long term data sets in support of environmental monitoring and climate change science is now dominating the technology requirements. Chelsea’s new range of high performance miniature Lux fluorimeters - UniLux and TriLux – have been developed as a low cost solution to meet these requirements. Similarly, the Chelsea Fast Repetition Rate Fluorimeter is fast becoming the tool of choice for a range of organisations wishing to investigate the physiological responses of a diverse range of phytoplankton within ocean, coastal and fresh waters.
Long term observing systems are becoming widely established and the diverse range of oceanographic environments requires careful selection of appropriate sensor technologies. It is becoming increasingly important to identify where technology gaps exist and to ensure that clear guidance is provided to scientists and industry to enable these to be addressed.
CATALOGUE Advert
FP 360 sc Immersion Probe for Detection of Oil in Water
INFORMATION PROCESS ANALYSIS UV FLUORESCENCE FP 360 SC
FP 360 sc in stainless steel with optional cleaning jet (left) and in titanium
FP 360 sc in sta cleaning jet (lef
FP 360 sc immersion probe for detection of oil in water
Immersible probe: measures directly in the medium
Mineral oil in water – down to the trace range
The FP 360 sc monitors surface waters, process water and industrial water continuously for even traces of mineral oil contamination. For reliable, long term stable hydrocarbon monitoring, the FP 360 sc compensates intensity fluctations of the flashlamp. Influences associated with daylight are automatically eliminated.
Rugged probes, also available in titanium
Digital SC controller for up to 8 probes
The FP 360 sc probe can be combined with additional sensors on the SC controllers.
Free download of brochure in English and 15 other languages (HR, SI, GR, GB, PT, PL, DE, FR, HU, RO, BG, TR, NL, IT, ES) is available on the HACH LANGE website:
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HACH LANGE GMBH Willstätterstraße 11 D-40549 Duesseldorf
Tel: +49(0)2115288-0 • Fax: +49(0)2115288-143
info@hach-lange.de •
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Direct measurements in the medium
Even the smallest oil traces impair water quality. The FP 360 sc monitors surface waters, process water and industrial water continuously for even traces of mineral oil contamination. The highly sensitive UV fluorometer is immersed directly in the medium. The rugged housing of the FP 360 sc is made of stainless steel or, for use with aggressive media, titanium. The probe is simple to clean and is available with a compressed air cleaning jet.
Reliable and secure For reliable, long term stable hydrocarbon monitoring, the FP 360 sc compensates intensity fluctations of the flashlamp. Influences associated with daylight are automatically eliminated.
The FP 360 sc probe can be combined with additional sensors on the SC controllers. Parallel measurement of several parameters gives a high level of operational security everywhere!
Reader Reply Card no 92
The recently established SCOR OceanScope working group highlights the need to utilise commercial vessels on a large scale to undertake detailed water column measurements. FerryBox systems (such as Chelsea’s AquaLine FerryBox System) are a well established method of obtaining surface water data from ferries and ships but systems for unattended, detailed water column profiles will present new technology challenges.
These are global challenges and the Intergovernmental Oceanographic Commission (IOC) is ideally placed to provide an important identification and coordinating role. Reader Reply Card no 93
Next issue IFAT Preview. Make sure your company is featured!
info@iet-pub.com
New Technology for Final Effluent Monitoring
Engineers at Intellitect Water (UK) have developed a version of the company’s innovative multiparameter water quality monitoring sonde, the ’Intellisonde FE™’ that has been designed to bring the advantages of online monitoring to a much larger proportion of wastewater treatment plants.
One of the new sondes has been on trial at Wessex Water’s sewage treatment works in Bournemouth. The monitor was installed in January 2010 at the plant’s outfall, adjacent to traditional online monitoring instruments and Wessex Water’s Regional Waste Scientist Mike Robinson, says: "The trial is proceeding very well, with the Intellisonde FE™ producing measurements that closely mirror data from our other monitors and from manual tests."
Occasional sampling and analysis can be lower in cost than online monitoring. However, the main disadvantages are that a pollution incident could go undetected between sampling times and infrequent data does not support process optimisation.
The Intellisonde FE™ will also provide major financial advantages. It is priced for volume deployment, significantly below traditional effluent monitoring systems, which means that it will become cost-effective for a much larger proportion of works and will save the cost of sampler visits and analysis.
From a water company perspective, Mike Robinson says, "If we can prove that the lifetime costs are as low as they appear and if the unit continues to perform reliably, the lack of a requirement for chemicals coupled with a low maintenance requirement will mean that the Intellisonde FE™ could find application at a large number of treatment works."
Reader Reply Card no 94
New Multi-Bottle Transportable Refrigerated Sampler
The new Avalanche™ from Teledyne Isco (USA) is a multi-bottle, sequential/composite water sampler featuring Isco’s revolutionary transportable refrigeration system and advanced, multifunction controller. Its unique design provides easy transport, quick setup, and on-site cooling – without reliance on ice or utility power. An optional Mobility Kit with pneumatic tires
lets you wheel Avalanche even over rough terrain to remote sampling sites.
Avalanche is ideal for stormwater, TMDL, pretreatment compliance, and other mobile sampling applications requiring accurate sample preservation, versatile control, and flexible, reliable data handling.
In the field, Avalanche delivers 48 hours or more of refrigeration from a 12 volt deep cycle battery, which mounts conveniently on the wheeled cart. Its power-saving system begins cooling when the first sample is drawn. Avalanche can wait patiently for days or weeks to collect event-triggered samples, dial out an alarm/notification on its optional modem, and then preserve the samples until they are retrieved. For even greater versatility, the dual-power version runs on either 12 VDC or AC line voltage.
The Avalanche controller offers all of the control, expansion, and data management options available with Isco’s 6700 Series Samplers
Reader Reply Card no 95 Reader Reply Card no 96
GE Power & Water Water & Process Technologies
Continuous TOC Control With the new Sievers InnovOx On-Line
GE's InnovOx On-Line Total Organic Carbon (TOC) Analyzer combines simplicity and a unique Supercritical Water Oxidation technique for industrial, environmental, and wastewater TOC analysis. The InnovOx features:
• Sample handling robustness — runs brine and other tough samples with unprecedented uptime
• Fast startup, easy operation, and 6-month calibration stability • User-configurable alarms and outputs
Trade in your current TOC analyzer model for special savings on an InnovOx. Contact
geai@ge.com or visit
www.geinstruments.com.
GE imagination at work
May/June 2010
IET
NEW!
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