16 Water/Wastewater
Arctic Lake Monitoring System Deployed for Another Winter Season
AXYS field technicians recently traveled to Inuvik, Canada to assist in the servicing and deployment of the system. The Arctic Lake Monitoring System (ALMS) from AXYS Technologies (Canada) was originally deployed by helicopter in September 2010 and successfully gathered data throughout the winter season of ice formation and break-up transition periods. It was removed from the water in September 2011 for routine maintenance and refurbishment to prepare it for another season of arctic environmental monitoring. Although coordinating field work in the Arctic Circle has its share of challenges, the AXYS field technicians and W-CIRC personnel successfully commissioned and redeployed the ALMS in Noell Lake for another season of data acquisition.
The information collected will help to develop a better understanding of Arctic lake ecosystems and will assist in the development of hydro-ecological
models for small arctic lakes in research disciplines including, landscape hydrology and geochemistry, lake-ice modeling and aquatic productivity and carbon dynamics. Such models are used to assess the vulnerability of Arctic lake ecosystems to disturbance, such as climate variability/change and those related to Canada’s northern region.
AXYS and the Water & Climate Impacts Research Centre (W-CIRC), a collaborative Environment Canada and Department of Geography (University of Victoria) research centre, designed the ALMS to be an autonomous system used for continuous year-round monitoring of hydro-ecology in Arctic lakes.
The ALMS, consisting of Ice Buoy and Subsurface Smart Mooring, performs continuous, unattended year-round monitoring of meteorological conditions, ice cover, solar radiation and water quality on and throughout the water column. This information is available in real-time to W-CIRC throughout the year.
GE Energy
Data from the subsurface mooring is transmitted to the buoy via an acoustic modem where all system data is then combined and sent out through cellular or satellite telemetry. AXYS provides data hosting, management and reporting services for W-CIRC to help them collect, track, analyse, and understand their data.
The Water & Climate Impacts Research Centre (W-CIRC) was established in September 2002 at the University of Victoria (UVic) as part of a co-location agreement between UVic and the National Water Research Institute (NWRI) of Environment Canada.
Reader Reply Card No. 40
New Digital Instrument for Portable Testing of Chlorine Dioxide, Free Chlorine and Chlorite
The original Roots* blower still leads the way
With the 2011 acquisition of Dresser, GE’s air and gas movement offerings now include Roots blowers, compressors and controls. These positive displacement blowers and centrifugal compressors are employed worldwide in a variety of applications including: petrochemical; fl ue gas desulfurization; power generation; effl uent treatment and metal refi ning.
Roots blowers, compressors and controls deliver air and gas fl ows from 3 m3 430,000 m3
/hr. to /hr. So you can expect
innovative solutions from us wherever air and gas moves anywhere in the world.
See what GE can do for you at
www.ge.com/energy
The ChlordioX™ Plus builds on Palintest’s (UK) innovative sensor technology, providing a new portable testing solution for Chlorite. The ChlordioX™ Plus is ideal for applications such as drinking water, produce washing and paper/pulp bleaching. Using the company’s patented disposable electrical sensor technology and a unique sequential methodology, the instrument offers superior analytical performance compared to DPD or Lissamine Green methods, while reducing the potential for user error.
Palintest’s chronoamperometric method, using the ChlordioX™ Plus, quickly, accurately and precisely measures Chlorine Dioxide and Chlorite between 0.02 – 50 ppm, and Free Chlorine between 0.02 – 10 ppm. Results are displayed in under a minute for the Chlorine Dioxide and Free Chlorine tests, while the degassing process for determining Chlorite levels takes less than 6 minutes. The kit contains all the equipment required to start immediate testing, including degassing equipment, reagents and sensors for 100 tests of each parameter.
The ChlordioX™ Plus device is battery-powered (4xAA), lightweight (975g), and portable (170×126x116mm), making it ideal for laboratory or field testing. The instrument incorporates a backlit LCD screen and is controlled by a simple to use menu. Up to 500 readings can be stored in its on-board memory, while a waterproof USB connection enables quick downloading of results to a PC.
Reader Reply Card No. 41
WEFTEC 2011 Keeps Pace with Strong Showing
A total of 16,961 water professionals and 923 exhibiting companies from around the world recently attended WEFTEC 2011- the Water Environment Federation's (WEF) 84th Annual Technical Exhibition and Conference in Los Angeles, USA. As the city's second largest conference this year, the strong showing reinforces WEFTEC as the place to be for information and technology exchange among water professionals and for access to the best business opportunities in the water quality field.
"WEFTEC continues to be the must attend event for water professionals who want to keep up with the best water science and products," said WEF Executive Director Jeff Eger. "This year's outstanding program and exhibition shows
that we stand ready to meet the needs of our members, attendees, and the entire water profession." * Denotes a trademark of General Electric Company
To that end, conferences offered attendees their choice of more than 900 presentations in 114 technical sessions, 37 workshops, eight local facility tours, as well as several high profile events.
Reader Reply Card No. 42 Reader Reply Card No. 43
IET November / December 2011
www.envirotech-online.com
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