Case Study WWTP application-H2S filter0 pages

Case Study N°AA1 – Ambient air monitoring – WWP TRS MEDOR H2S filter – updated: 14.10.15

Case Study
Ambient Air Monitoring Applications

Waste water treatment plants
Personnel Safety & H2S filter management
Context & Challenges
Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization
near waste water treatment plant and extension of sewerage network. These aspects induce to an
augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and
toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions.
As a result of the confinement of the waste water stations, toxic components such as H 2S and Methylmercaptan
increased. Safety of employees on such working sites has therefore become of major problem. To fight this
hazardous pollution, air filtering systems have been installed. For the station managers, personal safety coupled
with the need for constant air quality control and filter change has been a heavy task.

Chromatotec® Solutions
TRS MEDOR ppb or ppm for up to 14 compounds
With only one instrument, it is possible to analyse up to 14 sulfur compounds. Thanks to
specific sulfur detector (SSD) and AIR or N2 carrier gas, the separation and sensitivity is
excellent down to 1 ppb levels and low odor unit/m 3.
The instruments are being calibrated with primary gas standard certified at ±2%. There are
no interferences due to the gas chromatography separation and the sulfur specific
detector. The analyzer is LINEAR: range 0 / 100 ppb.
The instruments are fully automated thanks to internal calibration (airmoCAL). The
VISTACHROM software controls the analyzers, multiplexer, meteorological station and
enables storage and display of the chromatograms thanks to Peak Viewer.
It is possible to transfer data to a data logger or modelling software with the communication
protocols MODBUS RTU, JBUS, German PROTOCOL and X-Path.

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