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UK Focus Water/Wastewater EXOR Role in Drinking Water Quality Assurance UniOP TFT HMI panels with integrated PLC functionality are helping to ensure optimum drinking water quality at Thames Water treatment works.
Thames has installed the UniOP panels to control stringent triple validation procedures at around 40 of its sites, enhancing the functionality of analogue equipment that is no longer in production. The company asked monitoring specialist ATI to find a new solution and in turn the firm identified Exor’s UniOP range of panels supplied by sole UK
distributor, Scattergood & Johnson. “I heard about the UniOP so we tried it and were very impressed,” says ATI technical manager Chris McTear. Just one of the benefits is that the new colour TFT panels are able to simulate the redundant system, while at the same time offering vastly increased operability.
“We have programmed the UniOP panels to mimic the old analogue units that staff were familiar with,” says Chris. “The footprint is exactly the same as the old product, but it is state- of-the-art equipment with capabilities far exceeding anything they were used to.”
As part of Thames’ stringent triple validation process, panels containing UniOP HMIs have been installed at the water treatment works. Each panel monitors a separate chlorine sampling process. “It is essential that chlorine is maintained at the correct level to avoid the creation of bacteria. Thames have never had a bacteriological failure and they are determined to maintain that performance,” says Chris.
The upgrades have also been cost-effective for the utility company as it no longer needs to undergo separate pH monitoring using chemicals. That monitoring is now integrated into the UniOP systems.
The enhanced capability of the units, including integrated Ethernet ports and OPC connectivity means that additional functions can be programmed in according to Thames’ requirements. Chris says: “We are now looking at wireless network access for remote interrogation.”
In addition to Thames Water, ATI has also installed the UniOP HMIs at United Utilities water treatment works in the north west. Reader Reply Card no 233
Reader Reply Card no 234 Real-Time On-Line COD Monitor Saves Money, Energy and Waste
A true on-line monitor that enables accurate, sensitive, real-time analysis of Chemical Oxygen Demand (COD) is now available from Camlab (UK).
analyser, which is capable of generating a reading every 15 minutes, provides unrivalled analysis data of waste or discharge streams. On-line, real-time monitoring of processes enables them to be adjusted in real-time to reduce energy use, make downstream treatment more cost effective and prevent waste of expensive ingredients.
The innovative PeCOD® Having undergone extensive testing of the laboratory model of the PeCOD® analyser in real life applications over the
past 18 months Camlab is now supplying the on-line monitor version of the technology to high profile UK food and beverage manufacturers.
David Miller, Business Development Manager of Camlab Ltd said: “This on-line analyser technology is allowing our customers to accurately monitor their processes in real-time for the first time. The on-line PeCOD®
save money and protect the environment. They are typically seeing payback in a matter of months.” The core of the new on-line technology is the PeCOD®
analyser is enabling these manufacturers to reduce waste, sensor which gives the instrument the ability to analyse samples more accurately than
the traditional dichromate method and does not require the use of toxic reagents like mercury and silver salts. The increased sensitivity of the method enables the measurement of clean water samples with low ppm levels of COD. The sensor consists of a UV-activated titanium dioxide film coupled to an external electrochemical circuit. The high oxidising power of the sensor gives the analyser a significant advantage compared with the traditional dichromate method. The PeCOD™ COD analyser exhaustively oxidises organics, and counts the electrons that are liberated to provide a direct measure of equivalent COD.
Reader Reply Card no 235
New Low Cost On-Line Chlorine Analyser Exclusively to the UK Water Market
Siemens Water Technologies (UK) introduces the SFC BA Chlorine Analyser exclusively to the UK water market-- the newest member in our broad portfolio of process analysers and controllers -- designed with economics, simplicity and reliability in
mind. Ideally suited for potable and industrial water chlorination applications, this analyser is the least expensive to own, operate and maintain yet is responsive and reliable enough to ensure compliance with regulations. Savings go right to your bottom line with features such as; no costly reagents or buffer solutions required, intelligent yet simple operation, dramatically reduced sensor maintenance and one fourth the sample water flow requirements of similar products.
Reader Reply Card no 237 Reader Reply Card no 236
IET
Annual Buyers Guide 2010
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