Water / Wastewater 35
Engineering and environmental monitoring expertise enables the efficient development of new flood monitoring station on the River Nidd
Leading bridge and engineering services specialist Mabey has supported JN Bentley in the construction of a new concrete flow gauging station for the Environment Agency on the River Nidd near York, in Northern England.
The primary purpose of the station is to monitor water levels on the Nidd at Skipbridge and ensure the Environment Agency can provide early flood warnings to the city of York should the river exceed ‘normal’ levels (over 4.64 metres).
To build the flood monitoring station, JN Bentley needed to re-route the River Nidd and create a dry working space in a timeframe that avoided disruption to breeding course fish and their eggs between November and March.
To facilitate this challenging multi-phase project, JN Bentley approached Mabey and requested use of its light panel formwork system (Frami), consisting of ply-lined hollow-sectioned steel frames. Having used Mabey’s Frami system in previous projects, JN Bentley recognised its efficacy for fast and economical concrete construction.
In the early stages of construction, Frami was harnessed to create a bespoke flood protection barrier while the river diversion took place. Once the dry working space had been created, Frami was then used to create non-standard shaped concrete pours for the gauging structure itself.
The lightweight nature of Mabey’s equipment mitigated the need for a crane and allowed the required concrete structures to be erected quickly and efficiently on-site. This ensured work was completed in a timeframe that did not interfere with breeding fish.
Commenting on Mabey’s role, Tom Sherwood, Site Agent at JN Bentley said:“Mabey’s lightweight, manhandle-able, modular Frami solution proved invaluable on this challenging, time-constrained project. Through collaboration with Mabey, we were able to develop a unique solution which helped us to divert the river and erect the station efficiently, without damage to the local fish population.”
Gordon Macdonald, CEO of Mabey Hire UK, added:“We pride ourselves, not only on delivering solutions that work for our customers, but providing the on-site expertise that enables the quick, safe and efficient delivery of their end goal. It was great to see the flood monitoring station delivered on schedule, which will play a huge role in protecting this area of Yorkshire against future floods”.
Environment Agency project manager Oliver Wilson said: “The gauging station at Skipbridge is one of the Environment Agency’s critical assets for our flood warning service and for managing water resource available for abstraction.“Having an early warning that the Ouse could overtop in York means we can act early to prevent flooding by closing flood gates in the city.”
Leading pH meter now available with additional probes
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The PCE-228 has been part of PCE Instruments’ product range for many years now, with several extra probes apart from the pH probe. The basic model PCE-228 comes with a PE-03 pH electrode and a temperature sensor and a variation of that model, the PCE-228M, is available with the CPC-OSH-12-01 pH electrode for meat and other food products. Another existing variation is the PCE-228-R that includes the ORP-14 electrode for Redox measurement whereas the long-established PCE-228S pH meter comes with the PCE-PH-ES electrode for pH measurement in soil. For all four of these, the other electrodes are available as an option and the temperature probe is included in the standard delivery.
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Recently, several more versions of the PCE-228 pH tester have been added to PCE Instruments’ range of products:
The PCE-228SF pH meter measures pH values on surfaces with its ERH-115 electrode and also comes with a temperature probe. Measurable surfaces include skin, paper and cardboard, textiles, etc. This pH tester also measures very small sample volumes, starting from 0.1 ml. To do so, a special cuvette is needed. The cuvette is also included in the standard package of the PCE-228SF pH meter. The PCE-228LIQ comes with the PCE-PH-LIQ electrode and the standard temperature probe, as all other models. The PCE-228LIQ is used to measure pH values in beer, blood and some dairy products. The pH tester PCE-228SLUR comes with the PCE-PH-SLUR pH electrode for measuring pH in mud and soil and a temperature sensor. As with the older models, the electrodes are also interchangeable with the new models.
All models described above are available with several accessories like solutions (storage, calibration, cleaning, etc.), different types of mains adaptors, an RS-232 to USB adaptor and more. An ISO calibration with certificate can be purchased at an extra charge. For More Info, email:
47685pr@reply-direct.com
New general lab catalogue is now available in English
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Xylem’s new English language catalogue is a bonanza for practitioners measuring the electrochemical and photometric standard parameters, turbidity and respiration in the lab and in the field. Highlights include the new IDS portable and lab meters with digital signal transmission,
for pH/ORP Conductivity and D.O. measurement, the full range of IDS electrodes with either fixed cable or plug connector, the IDS-WL modules for wireless transmission of data from electrode to meter, the photoLab 7600 UV laboratory photometer enabling the reagent free optical measurement of wastewater parameters COD, Nitrate and Nitrite. The catalogue also features the comprehensive, updated photometric reagent kits table.
For More Info, email: email:
For More Info, email: email:
47680pr@reply-direct.com
www.envirotech-online.com IET November / December 2018
In laboratories as well as in the industrial sector, a pH meter is often required to measure the hydrogen-ion activity in water-based solutions. The hydrogen-ion activity is indicative of a solution’s acidity or alkalinity, which is expressed as pH. The right pH electrode must be selected carefully in line with the measured medium as it will be directly in contact with it.
47683pr@reply-direct.com
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