34 Air Monitoring
VOC Detector Chosen for Demanding Emission Monitoring Requirements
When worldwide leader in integrated environmental services, EnGlobe Corp required highly sensitive photoionisation (PID) devices for the daily monitoring of potential hydrocarbon emissions during its demanding River Kishon dredging project in Israel, it chose two hand held Tiger volatile organic compound (VOC) detectors from Ion Science (UK).
The unique and complex project involves dredging approximately 500,000m³ of hydrocarbon impacted sediment from the River Kishon. This sediment will be dewatered before undergoing intensive biotreatment on site in order to meet the stringent clean-up criteria. Upon completion of the treatment, the material will be used to construct landscaped hills and public open space on site.
James O’Hara, Monitoring Manager at Englobe Corp comments: “The
River Kishon project is high profile and represents a first for EnGlobe. The monitoring requirements are extremely varied and demanding with Environmental Samplers monitoring 40 locations per day, on the main site, boundaries and river.
James continues: “Monitoring is required to help ensure the safety of our workforce by detecting any hydrocarbon emissions that arise as a result of the dredging and clean-up operation. The close proximity of heavy industry to the area meant we needed an extra sensitive device to differentiate between on and off site sources. The Ion Science Tiger was recommended by our long standing supplier, Van Walt, as offering the sensitivity levels needed for the application.”
Both Ion Science Tigers have been upgraded with the optional data logging function and associated software. Data is entered into EnGlobe’s dedicated database where it is interpreted and then reported to the client. It is presented in weekly reports and available for viewing by the client on the database, 24 hours a day. The software also enables EnGlobe to easily change settings when switching between different voltage lamps.
James adds: “The Ion Science Tigers will be in almost constant daily use in harsh conditions so reliability, versatility, durability and accuracy were also key features. Plus, the Tiger is easy to set up and use in the field which is an important requirement when the Environmental Samplers are simultaneously monitoring odours, noise and gases together with respirable and inhalable dusts.
“The service from Van Walt in the UK and Ion Science’s representatives in Israel has been great and the training provided by both businesses was of a high standard and covered both operational and regular maintenance,” he concludes.
EnGlobe has developed a unique expertise in the management of organic waste materials and in reusing or recovering decontaminated soils as well as in the precision testing and calibration of bulk tanks and storage systems.
A robust hand held VOC detector, Tiger provides a dynamic detection range of 1 parts per billion (ppb) to 20,000 parts per million (ppm), offering the widest measurement range of any other VOC instrument on the market.
Ready to use, straight out of the box, the Tiger requires no complex set up procedures via a PC to perform basic functions and provides the best available VOC detection and software features available.
Ion Science’s Tiger also has the fastest response time on the market of just two seconds and can be connected directly to a PC via the USB offering extremely fast data download capabilities.
It has been designed for the safe replacement of batteries in hazardous environments and is intrinsically safe (IS) - meeting ATEX, IECEx, UL and CSA standards.
Mass Flow Meters_A5_quer_Satzspiegel_Layout 1 29.05.12 16:09 Seite 1
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Mass Flow Meters and Controllers
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Axetris AG Switzerland Phone: +41 41 662 76 76 E-mail:
www.axetris.com
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High turn-down ratio High repeatability Low flow ranges Platinum based MEMS
Laser Gas Detectors | IR Sources 25/03/2014 08:25 IET Annual Buyers’ Guide 2014/15
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Online Odours Monitoring in Waste Water Treatment Plants
Odours are very distinct air contaminants as they generate nuisances. The factors playing a role in the determination of odour annoyance are: odour concentration and intensity, frequency, appreciation, duration, synergy and location. Chromatotec (France) proposes an automated solution to accurately identify the origin and the level of odours.
With more than 20 years experience of odour measurement in waste water treatment plants, Chromatotech offer a comprehensive solution
for odour monitoring, including the Medor Gas chromatograph, specific for sulphur compounds (H2
S/ MM/EM/DES/DMS/ DMDS/PM/SO 2), according to
ISO6326/2 & DIN51855/7, ASTM D 7493-08 with a low detection limit < 1ppb for H2
S, Mercaptans and Sulphides. The Medor is interference free and has a detector lifetime of up to 10 years.
The instrument monitors ambient odours inside and outside waste water treatment plant and also monitors the deodourisation process. One instrument, using a multi stream selector, is able to measure compound concentrations and odour indexes before and after deodourisation tower. These measurements allow the control and the adjustment of deodourisation processes, the optimisation of chemical treatment and a decrease in effective costs.
As the replacement of calibration gas cylinders is expensive and time consuming, Chromatotec is developing electrochemical gas generators (e.g. H2
S, Cl2 , O2 , H2 …). These generators will allow high level calibration and improve the reliability of the system.
Chromatotech also offers the chromaTID gas chromatograph specific for amines and ammonia, and the DET NH3 FTUV detector for ammonia. Features include internal auto calibration to automatically validate the data, with optional data reporting and modeling software, real-time odour dispersion modeling, online registration of complaints, and recalculation of odour concentration at a specific location and time.
Meteorological stations are also available to monitor wind direction and speed, temperature, and relative humidity.
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Total Solutions for CEM and Air Monitoring
Opsis AB (Sweden) is a supplier of continuous emissions monitoring (CEMS)/process control and ambient air monitoring technology (AQMS). Established in 1985, Opsis are experts at providing the equipment and support services required to help our customers meet the stringent requirements of regulation. The user gets a total solution from measurement to data reporting. All equipment is fully MCERTS and TÜV compatible, and meets many other national and international standards.
Based on cross-stack, non-contact, DOAS technology, and utilising FTIR and grating spectrometers, the analyser systems we provide are simple, robust and maintenance friendly. Offering the lowest maintenance costs and high uptime, Opsis represents a cost-effective alternative.
Opsis is represented on all continents with a network of subsidiary companies, distributors and other representatives. Thousands of systems are installed worldwide.
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