Modeling software package vigiODOR

mappingvisualizationdata acquisition and analysis

Overview
vigiODOR software for real-time odor dispersion modelling, VOC & sulfur impact mapping with meteorological data for industrial odor monitoring and control. When a vigi e-nose analyzer is associated with a local meteorological weather station installed on-site, it is possible to assess the impact of potential emission sources. The software integrates the real-time information of the chemical and olfactive global fingerprint to model the dispersion of odors around industrial sites. It offers automatic notification for odor exceedance levels on pre-defined sensitive points and online registration of complaints. Thanks to forecasting mode and tests using sensory panel perception around the site, industries can anticipate nuisance and limit their impact on the neighborhood. It has been deployed in France, United Arab Emirates and Poland for applications such as composting activities and water treatment.

EasyTrack
EasyTrack, the simplified version of vigiODOR, has been deployed in a petrochemical plant in Chile. It only requires real-time meteorological measurements and emission data of the different sources for the AERMOD dispersion modeling of an industrial site. Results can be displayed and exported from the website.

Modeling capabilities
Both vigiODOR and EasyTrack dispersion software host simplified Gaussian models or more complex Lagrangian models considering the complexity of the topography. Data can be provided by any type of Chromatotec analytical solutions considering VOCs, sulfurs or odor parameters.

Characteristics / Technical specifications

• Detection limits*:
  • Sulfur detector: less than 1 ppb for H2S
  • TVOC PID detector: less than 10 ppb on DMS
  • 50 UO E/m3 (limit of the olfactometer)
  • *more sensitive analyzers available upon request with special application
• Detection range:
  • 0/10 or 0/100 or 0/1000 (ppb or ppm)
  • Calculation: Odor Index, TVOC, Total Sulfur, (OU e/m3 with XXXOU)
• Relative Standard Deviation:
  • RSD < 3 % on concentration over 48H
  • RSD < 0.5% on retention time over 48H
  • < 1% on concentration at 100ppb over 24h
• Results:
  • Embedded computer Windows® based with LCD display
  • 128 GB of hardware storage on SSD memory
  • Ethernet, remote control
• Cycle time:
  • H2S, SO2, MM, EM, DMS, DMDS, DES: 600 s
  • With special application following compounds can be added: IPM, TBM, NPM, 2BM, IBM, NBM, MES and THT: 1200 s
• Gas supply:
  • Carrier: Dry air or N2 (3 bars): ≤ 4 ml/min
  • CALIB: in continuous ~ 50 ml/min
  • CALIB during validation ~ 250 ml/min for M52 configuration
  • Pneumatic valve 90 ml/commutation
  • Sampling dryer: 150 to 200 ml/min