46 Water/Wastewater
Mobile Sampler with Cooled Sample Container
QH SERVIS (Czech Republic) offer mobile sampler in the Snowman version. The unit is equipped with active compressor cooling of the sample container. It can be powered from the 24 V Powerbox battery module, or from 230V mains. The cooled room fits a 15 l
sample container or twelve one liter containers.
Sampling is performed by a peristaltic pump and the sampler is equipped with an easy- to-use control unit controlled from the external memory in the configuration connector (identical with Simply Sampler samplers), or Bond-oo-Check module with real time clock enabling logging of sampling data including sample temperature and connected analog signal value (identical with Soft Sampler samplers). The sampler is standardly equipped with analog input for flowmeter signal, controlling the sample volume depending on the immediate flow, and digital inputs for remote control. For easy manipulation in the terrain it is equipped with robust wheels and a solid grip.
Reader Reply Card no 158 New Conductivity Levelogger
The LTC Levelogger Junior from Solinst (Canada) allows datalogging of conductivity along with water level and temperature ñ all in one instrument, and at an attractive price. It combines a datalogger, memory for 16,000 sets of readings and a 5-year battery in a small waterproof housing. LTC Levelogger Junior auto-ranges from 0 ñ 80,000 µS/cm, and provides 2% accuracy of the readings from 500 to 50,000 µS/cm.
Reader Reply Card no 159
Temperature Data Loggers, Deployed in Arctic Glacial River Basin, Help Understanding the Impacts of Climate Change
Currently, over 20 Tinytag data loggers from Gemini Data Loggers (UK) are located 200 kilometres north of the Arctic Circle as part of a research project to study river basin water temperature dynamics, within the wider context of understanding the impacts of climate change on Arctic river basin hydrology and ecology. Dr David M. Hannah at the School of Geography, Earth and Environmental Sciences, University of Birmingham (UK), is one the leading authorities on hydroclimatology; a scientific discipline which seeks to understand the relationship between climate and surface waters (including rivers, and water stored as snow and ice).
This ongoing research in Swedish Lapland is in collaboration with Dr Alexander Milner and Mr Chris Mellor (also at University of Birmingham, UK). In a new project, Drs Hannah and Milner will deploy Tinytag data loggers in rivers in Svalbard: an area covering 63 000
sq.km and made up of a group of islands between 74° - 81° N and 10° - 35° E; 60% of which is covered by glacier.
The submersible Tinytag data loggers are positioned just above the river bed and their role is to monitor the water column temperature and its dynamics over the summer melt season and also over winter. The loggers are pre-set with a 15-minute logging interval and little user intervention is required after that. The readings provide the team with vital information on river temperature variability and also allow inference of river flow conditions and ecological importance of temperature fluctuations.
Dr David Hannah comments: “The loggers have to withstand extreme conditions including river icing events and high flows (floods). As the summer melt season is short, it is crucial that data are gathered accurately and that nothing goes wrong with our equipment. Tinytags, which I have previously used for other environmental research in the UK and worldwide, are tough and reliable.”
Data are downloaded onto a laptop on site using an inductive pad offering a practical and efficient solution in the extremely cold, wet and uncomfortable conditions. The data are displayed using Tinytag Explorer software, which generates easy to read and smooth graphs showing peaks and drops in temperature over the period of measurement.
Knowledge of river thermal dynamics has focussed on glacierised basins, due to the high sensitivity of these systems to climatic change and variability. In a complex field, Tinytag data loggers offer simple but highly effective monitoring technology.
Reader Reply Card no 162
Reductions In Chemical & Energy Costs, Control of Flocculation Size and Distribution, Control of Coagulation and Treatment, Mixing & Blending Control
Reader Reply Card no 160
TOC TN NO3 TKN TP
COD BOD TC TIC VOC
Achromatic Water (UK) are experts in Automatic Coagulation & Flocculation Control, associated coagulant & polymer dosing control systems and process optimisation and cost reduction
are specifically developed for continuous analysis in the harsh on-line environment
BioTector Liquid Analyzers
• Low Maintenance – 6 month service intervals • High Reliability – 99.7% uptime & up to 86,000 measurements per year
• Self-Cleaning Technology – prevents clogging & sample contamination
• No Filtering requirements • Dramatic Payback on product loss, treatment costs & maintenance costs
• Guaranteed to handle the most demanding applications
www.biotector.com
“The Oxidation Process that Totally Self-Cleans”
Email:
info@biotector.com Tel: +353 21 4374237
The latest series of installations incorporate Achromatic’s design service & Achromatic Water’s Automatic Coagulation and Dosing control system. Each system is unique and tailored individually to suit each water treatment plant process and raw water matrix.
The latest additions to the new Achromatic Mk II ICCS include the ability for multiple control of various process that impact on the treatment of the raw water. These include the ability to monitor & control incoming flows, control of dosed water pH pumps, main coagulant dosing pumps, and polymer dosing control. Additional options of DAF and 1st stage flocculation control are also available.
The latest system will optimise the coagulant dosing on the plant to ensure the minimum possible dose of coagulant is used to maintain good water quality. Typical reductions of 30% of chemical are not uncommon. In addition the system saves energy due to less filter backwashing required and improved flocc for sludge treatment.
Cryptosporidium control and sustained improved water quality are the added benefits of Achromatic’s system. Additional capability includes the option of chlorination dosing control and monitoring.
Reader Reply Card no 161 Reader Reply Card no 276
IET
Annual Buyers Guide 2009
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