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UK Focus Water/Wastewater New Technology Excites US Water Engineers
A unique, highly innovative water quality monitoring technology is making waves in the North American water supply sector following initial trials at a variety of locations.
Developed by Intellitect Water Ltd in the UK, the new analyser (Intellisonde™) features up to 12 sensors in a tiny sonde head that inserts directly into a pipeline through a hot tap fitting. The Intellisonde™ logs water quality data and provides remote access to the data through a variety of telecommunication options.
Ken Thompson, a Technology Fellow with CH2M HILL’s Water Business Group, has led early work on the roll out of the technology and says he is "very excited about the potential benefits of measuring water quality within the distribution network between the treatment plant and the consumer."
Measurement options include Free Chlorine, Total Chlorine, Mono-
chloramine, Dissolved Oxygen, Conductivity, pH, ORP/Redox, Flow, Pressure, Temperature, Turbidity and Colour. Importantly, none of these requires membranes or reagents for operation and the sondes can be deployed for long periods without the need for frequent recalibration or maintenance.
Deployed at strategic locations throughout a distribution network, continuous monitoring enables efficient management of water treatment processes including disinfection. It also informs decision making in the rehabilitation process and other operational activities such as flushing and air scouring.
The probe can be inserted through 1-1/2” or 2” hot tap connections into pressurised pipes ranging from 4” street headers to large distribution mains.
Reader Reply Card no 158
New White Light Turbidity Meter Provides Rapid Analysis of Drinking Water Quality
Camlab (UK) has launched a new, easy-to-operate turbidity meter that uses a white light source and a 90 degree infrared detection technique to meet the specifications for EPA turbidity measurement (EPA Standard 180.1) which is a standard procedure for analysing the quality of UK drinking water.
The portable Camlab Water TB200 white light turbidity meter is designed to quickly provide reliable on-site analysis of water samples for various applications, ranging from drinking water to waste water.
The new instrument, which is capable of achieving 600 tests without battery change, is ideal for fast, precise on-site testing of water quality in the following application sectors: aquaculture, utilities, power, field measurement and industrial manufacturing.
The compact instrument features an Auto-Ranging feature that automatically selects the correct turbidity range for a sample.
Calibration of the turbidity meter is simple and the instrument comes complete with four turbidity standards <0.1, 20, 200 and 800 NTU, battery and test vials, in a carrying case.
Reader Reply Card no 159
Dŵr Cymru Welsh Water has become one of the first utilities to upgrade its water treatment
monitoring systems to the new Aztec range from ABB (UK). The ABB Aztec 600 colorimetric range combines Aztec’s proven and patented ‘wet technology’ with the advanced electronic platform of ABB’s ScreenMaster data recorders.
Welsh Water has already installed the new systems at nine water treatment works, where the company is monitoring aluminium and iron using ABB’s Aztec 600 series, as well as phosphate, manganese and nitrate levels using Aztec 1000 units. The deployment was part of a contract that also included instrumentation for conductivity and pH measurement.
By combining the Aztec fluid handling systems with ABB’s electronics platform, the ABB Aztec 600 range provides powerful, compact and reliable on-line colorimetric analysis of the main water treatment parameters, enabling companies to control costs by fine-tuning their dosing and treatment systems.
Easy operation and maintenance are two key benefits of the Aztec 600 family.
Front-mounted pushbuttons and a familiar
Windows™ environment combine with common operation and commissioning across the range using a menu-based system. The analysers feature a full-colour graphical display, while process data and historical logs are securely archived to a removable SD card. Notification of important events or current measurement status, can be emailed directly to multiple recipients using the built-in SMTP client, through the on-board ethernet communications link.
The Aztec 600 colorimetric range is designed to be as maintenance-free as possible. Each unit uses a single, piston pump to handle all sample and reagent fluids. This reduces the amount of maintenance required for external cleaning of sample lines, changing reagents and annual servicing. Thanks to the modular design of the analysers, operators can also benefit from common spares, consumables and maintenance procedures across the whole range.
Built for reliability, the Aztec 600 colorimetric analysers feature automatic two-point calibration. Various self-cleaning abilities to ensure that the optical cell and analyser tubing used for sample measurements remain free of residual particles between each analysis. A patented mechanical cleaning function uses the piston movement to wipe the optical cell with every measurement.
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Dŵr Cymru Deploys Colorimetry Range
Across Nine Sites
IET
May/June 2010
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