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test strip Applications

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    Waste water treatment plants Screening area: stripping

    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. To ensure the safety of operatives in the screening building/area of waste water treatment works an H2S analyzer has been installed in the main building to complement the protection provided by individual monitors. Chromatographic measurements show that other sulfurous compounds including Methylmercaptans are present in the air in addition to H2S.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Waste water treatment plants Air quality control by TRS MEDOR

    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. At the entrance of the waste water plants, where the waste water arrives, strongly smelling and polluted air is captured and neutralised by a chemical cleaning process called ‘’Stripping’’. The correct amount of chemical products needed to neutralise the polluted air has to be calculated.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Measurement of hydrogen sulfide & carbon disulfide in air for continous emission monitoring

    The Series 8900 Hydrogen Sulfide and Carbon Disulfide Analyzer provides direct measurement of H2S and CS2 in ambient air. This instrument is utilized for continuous emission monitoring. The Series 8900 H2S and CS2 Analyzer employs a Photoionization detector (PID) as the sensing element. A dual column configuration with timed backflush to vent is used to strip off moisture and heavier hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed volume of sample is carried to the pre-cut column. Backflush is timed so that only the H2S, CS2, and other similar components are eluted to the analytical column. Contaminants on the pre-cut column are backflushed to vent. H2S and CS2 are separated from potentially interfering components on the analytical column and elute to the detector for analysis.

    By MOCON, Inc. - Baseline based in Lyons, COLORADO (USA).

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    Measurement solution for high NH3 monitoring from wastewater

    Protea was asked to supply a high level ammonia (NH3) measurement system for a waste water treatment plant. The reflux drums at the inlet to two ammonia stripping towers needed to be measured continuously. Protea designed a solution based around our Solus TDLAS analyser platform and a high level dilution system. The Solus analyser was configured for NH3 measurements in the range 0-500ppm. A dilution system incorporating special dilution probe and 19` control panel was installed before the analyser. This gave a dilution level of 600:1, enabling the NH3 analyser to measure in the range 0-30% Volume.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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    Measurement of formaldehyde in ambient air for monitoring workplace exposure limits

    The Series 8900 Formaldehyde Analyzer provides direct measurement of Formaldehyde in ambient air. This instrument is utilized in industrial plants to monitor workplace exposure limits. The Series 8900 Formaldehyde Analyzer employs a flame ionization detector (FID) as the sensing element. A dual column configuration with timed backflush to vent is used to strip off moisture and heavier hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed volume of sample is carried to the pre-cut column. Backflush is timed so that only the Formaldehyde and other similar components are eluted to the analytical column. Contaminants on the pre-cut column are backflushed to vent. Formaldehyde is separated from potentially interfering components on the analytical column and elute to the detector for analysis.

    By MOCON, Inc. - Baseline based in Lyons, COLORADO (USA).

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    Measurement of acrylonitrile in ambient air for monitoring workplace exposure limits

    The Series 8900 Acrylonitrile Analyzer provides direct measurement of Acrylonitrile in ambient air. This instrument is utilized in industrial plants to monitor workplace exposure limits. The Series 8900 Acrylonitrile Analyzer employs a flame ionization detector (FID) as the sensing element. A dual column configuration with timed backflush to vent is used to strip off moisture and heavier hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed volume of sample is carried to the pre-cut column. Backflush is timed so that only the Acrylonitrile and other similar components are eluted to the analytical column. Contaminants on the pre-cut column are backflushed to vent. Acrylonitrile is separated from potentially interfering components on the analytical column and elute to the detector for analysis.

    By MOCON, Inc. - Baseline based in Lyons, COLORADO (USA).

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