The OdoWatch Platform is a turnkey solution to provide all necessary equipment for real time odour monitoring. It includes the required odour and gas sensors and a weather station. It records and stores all monitoring data so you can review exactly what happened in the past.
The e-noses are positioned near the odour sources of the site and measure the odour continuously. The odour data from the e-noses and the weather data from the weather tower are sent to the OdoWatch software, which models the atmospheric dispersion and displays the site’s odor plume calculated by AERMOD or CALPUFF. OdoWatch is calibrated to recognize and quantify (in odour units) the odours of each site.
Odotech's electronic nose has the capability to continuously monitor and record odour levels. It is composed of a matrix of 16 MOS sensors. OdoWatch also has the capability to continuously monitor and record H2S gas concentrations and integrate Multigas Detectors for real-time monitoring of up to four (4) different gases (H2S, NH3, SO2, VOC, etc.) concentrations.
The OdoWatch Platform is installed all over the word from desert to northern areas (-20°C to +50°C). All units have weatherproof NEMA 4X enclosures.
In order to correctly monitor atmospheric dispersion, the OdoWatch platform is equipped with a Weather Station installed onsite for continuous weather condition monitoring and recording. Measured weather conditions are wind direction, wind speed, atmospheric pressure, rain, temperature, humidity and solar radiation. The Weather Station must be installed in an area free of weather turbulences caused by adjacent structures.
All devices installed on site transmit their data using eaither GPRS radios or radio wireless communications. Data is transmitted on a continuous and uninterrupted basis. Radio signals are 2.4 GHz frequency hopping spread spectrum (2.4 @ 2.4835GHz) in a master-slave configuration. No radio operating license is normally required .
OdoWatch can be accessed on the internet using a web browser. All odour, contaminant and weather data can be displayed in the OdoWatch interface. The OdoWatch Platform provides email notifications and Alerts points signaling when pre-set olfactory thresholds are exceeded.
Installation of the equipment of the OdoWatch platform is done by Odotech technicians. Training for operators and maintenance personnel is provided with corresponding documentation (O&M Manuals). Odotech provide all necessary training for maintenance people and operators.
All equipment installed onsite require either 120 Vac/ 60 Hz or 240 Vac/50Hz. Depending on the type of emission sources, it may be require to install heated lines and gas preparation units to prevent from humidity condensation.For the eNose, SulfNose and Multigas Detectors installation, it can be either on an existing structure or a custom pole.
FEBRUARY 11th & 12th 2014 - in AMHERST, Nova Scotia, the Compost Council of Canada initiates a grand Canadian tour of technical workshops.
Interesting topics will be covered:
Regulatory Updates: Modernizing the Fertilizers Act & Regulations
Technology and Processing Management:
Essentials of Odour Management at Organics Management Facilities
Ongoing Updates to the County of Colchester’s Composting System Incorporating Compostable Plastics in Municipal Organics Recycling Programs
Research: The Composting Process as a Means of Controlling Aleutian Disease in Mink
Lawn & Turf Soil Improvement Utilizing Dehydrated Compost Topdressings and Organic Fertilizers
CQA Analyses: How to Interpret and Make Best Use of the Analysis
The Compost Quality Alliance: Going Above and Beyond
Parameters of Quality
Odotech is proud to be associated with the Compost Council of Canada to present the segment on the Essentials of Odour Management at Organics Management Facilities. We have prepared a special presentation for composting facilities, anaerobic digestion projects, landfills and others. Key topics will be address to provide attendees a complete tool box from the science of odour perception and odour metrology, odour management planning, odour impact assessment, continuous odour monitoring and odour control.
Join us at the AMHERST WANDLYN Inn, 1539 SOUTHAMPTON ROAD, AMHERST NS.
For additional information, please visit www.compost.org, email at email@example.com or call 1-877-571-4769
February 5, 2014 - Montréal, Canada – Odotech Inc. (www.odotech.com), a smart odor tracking and monitoring company, announced today that Mr. Luigi Lo Basso, MBA has been appointed to the role of Vice President of Finance of Odotech. As VP Finance, Mr. LoBasso will partner with the CEO and the executive team to shape Odotech's financial agenda for profitable growth.
He brings over 30 years’ experience with growing entrepreneurial and multinational public and private companies in Latin America, Asia, Europe, North America and the Middle East. His expertise includes developing business strategies; accounting, financial and administrative management; budget preparation and analysis; internal controls; policies and procedures; relationship management; and managing change.
“I am proud to join Odotech - the world leader in real-time odor tracking management solutions. OdoWatch - a dynamic odor monitoring and forecasting solution helps plant operators improve processes and reduce operating costs,” says Luigi LoBasso. “With offices in Montreal, France and Chile, this is an incredible opportunity for me to use my knowledge and experience to create a sound fiscal climate for the business internationally” he adds.
About Odotech Inc.
Odotech is an Cleantech company with a patented electronic nose system – OdoWatch - specializing in the measurement and monitoring of odors at waste water treatment plants, composting sites, landfills, rendering plants and industrial odor producing plants. The system alerts operators when odors begin to reach threshold values, enabling them to proactively respond before an odor problem occurs. As the population grows, moves close to odor emitting sites, the need for odor management is growing exponentially. Odotech services its international clients with sales and operations offices in Santiago Chile, Lyon France and Head Office and Manufacturing in Montreal Quebec.
- 30 –
CONTACT: Marvin Garellek, International Sales Manager | firstname.lastname@example.org
Odotech inc, 3333 Queen Mary Rd, Suite 301 Montreal, Quebec, H3V 1A2
(514) 340 5250 | www.odotech.com
Odor perception involves several dimensions such as the detection threshold, the perceived intensity, the odor character (description of the odor or the odor image), the hedonic tone (appreciation) and the emotions they generate. With such complexity, one might think that odors are subjective and it is impossible to quantify them objectively.
To measure odors, best practices call for olfactometry and measuring odor concentration expressed in odor units per cubic meter of air (OU/m3). The perception/detection threshold of an odorous gas is defined as the gas concentration at which 50% of a human jury perceives or not, the odor in an olfactometry laboratory. This is unrelated to an odor quality determination. By definition, the perception threshold is equivalent to 1 OU/m3. The number of dilutions of the odorant mixture required to obtain 1 OU/m3 (detection threshold) indicates the concentration " OU/m3 ". For example, if 10 dilutions are required to reach the detection threshold, the odorant sample contained 10 OU/m3.
Is it possible to draw an analogy between the perception of odors and noise?
Indeed. Both the public and professionals are familiar with the noise measurement expressed in decibels. Noise is also formed of frequencies (treble or bass). Series of sounds can create melodies that would trigger emotions.
Noise level: The number of decibels would be equivalent to the concentration of odors (odor level). In both cases there is an objective quantification method for the perception of our environment.
Noise composition: Sound frequencies would be equivalent to the chemical molecules that make up an odor. Like noise, an odor may be generated by a single odorous molecule (1 sound frequency) or a cocktail of molecules as is usually the case (multiple frequencies to noise). Like noise where some frequencies are undetectable, some olfactory molecules are imperceptible to humans, while dogs may react to certain sounds and odors hidden to us.
Melody: The different sounds amalgamated can compose a melody that may be familiar, as a fragrant chemical cocktail that could compose the odor of a flower bouquet
The musical choices are personal to everyone. One can recognize a melody and appreciated it or not. Some will enjoy rock or techno music while others prefer classical music. Melodies, as well as odors, will appeal to our memories and provoke positive or negative emotions.
In noise measurement, it is irrelevant to assess the appreciation of the noise, as a melody can be enjoyable for some and unbearable for others. It is rather the assessment that a number of decibels is not exceeded. It is the same for measuring odor with using odor concentration. People have their own olfactory preferences.
To measure noise one will need to use a sonometer to quantify decebels and frequencies, while for odors, we use an olfactometer (odor concentration) and a gas analyzer, e.g. a chromatograph coupled to a spectrogram mass to know the chemical composition. An electronic nose can be used to quantify both the odor concentrations and identify odors images (melodies).
Want to know more? Download our WhitePaper on Olfactometry versus Chemical Odor Characterization. Or our WhitePaper on the principles of how an electronic nose works.
During this end of year holiday time which signals the start of the new year, we are busy buying the best gifts and our senses are overwhelmed with: Christmas songs, decorations and visuals that all work to create that Christmas magic.
The scents associated with Christmas time immerse us. The aroma of traditional dishes like turkey and tourtières from different regions, a slice of Panetonne in the morning, the smell of the christmas tree and cinnamon candles throughout the house. The olfactive memory taps into our earliest childhood memories. All these odors awaken our emotions.
The Odotech team wishes you a very happy and festive holiday season. Peace, Health and Joy for 2014.
Thank you thank thank you for your donations, support and participation.
The 2013 Bristle-Affair Movember Campaign has collected 2,443$ and it means the world to us.
Your donations will support world-class men’s health programs that combat prostate and testicular cancer and mental health challenges. The funds we received during our 2013 moustache growing season will be distributed between a multitude of men’s health programs & initiatives including:
- Prostate Cancer Canada Foundation
- the Canadian Prostate Cancer – Genome Network
- ASAP Canada
- Canadian Kids Help Phone
A big thank you to all our private donations as well as our 3x corporate sponsors! Without your generous support, this year’s success would not have been possible.
Five member of Odotech proudly joined the Bristle Affair Movember team. Please vote on your favorite Mustache in the comment section!
Our team leader: Nicholas, Odor monitoring installation and maintenance manager
David, Odor monitoring software development manager
Marc, Odor monitoring manufacturing and quality control manager
Carlos, Odor dispersion modeling software development
Thierry, President & Chief Executif Officer, Senior Odor expert
Please vote for your favorite Mustache in the comment section
Thanks for caring.
The Bristle Affair Movember team and all grand-fathers, fathers, sons, grand-sons, uncles, close friends & neighbours.
Characterization via chemical analysis and sensory or olfactometric characterization have advantages and drawbacks. Despite the known benefits of the conventional chemical analysis characterization (accuracy, reproducibility, etc.),
olfactometric measures are generally preferred due to the characteristics of the measured parameters:
- Complex blend, in the environmental samples, of numerous odors with low concentrations,
- Interaction between mixed odors, without a simple predictive model of the effects of the perceived odor,
- Low odor perception thresholds comparatively with the detection limits of the analytical methods.
The main advantages of olfactometry derive from the direct correlation between the odor and the sensitivity of the detector being used, i.e. the human nose. Odors are quantified objectively in odor concentration (unit per cubic meter (O.U./m^3) or Dilution to Threshold (D/T)).
The effects of synergy and masking between different odorous compounds can be observed in samples. Numerous researchers have studied odorous mixtures and have created models to predict the effect that the mixtures’ composition has on the perceived odor (composition and concentration). In general, the use of these models is limited and applies only to the experimental conditions of the study. As well, the mixtures of compounds are mostly studied in the laboratory because of the complexity of mixed odors.
Studies have identified dominant odorous compounds in environmental samples. For waste water treatment procedures where H2S is the predominant odor show the values of r2 between the H2S and the odor concentrations to be as low as 7 to 69%. This means that other odorous compounds were responsible for 31 to 93% of the odor concentrations. Specifically removing H2S could have left up to 93% of the existing odor. H2S is certainly odorous but measuring only H2S is certainly not an accurate odor level assessment approach.
Chemical measurements are used to identify and quantify chemical compounds contributing to odor.
It is complementary to odor unit assessment by olfactometer or continious odor monitorig (electronic nose). It should always be kept in mind that in chemical analysis, while being expensive, many odorous compounds will be missed and they do not provide odor characteristics that describe the human experience of odor because mixtures of gas have unpredictable different interactions in the nose.
You want to know more? Read our White paper on Metrology of odors – Olfactometry vs. chemical analysis
Some plant operators will use the complaint logs to assess their performance or monitor their odor emissions. Unfortunately odor complaints are no real metric for quantifying odors.
Most of the time, odor complaints are imprecise, unreliable and provide inconsistent information. Complaints alone do not offer quantitative data and information that is required for odor abatement design.
When analyzing nuisance odor complaints, over- and under-reporting are common. Complaints are typically a symptom related to nuisance odor but offer a starting point to understand the impact of odor from a site.
Odotech markets OdoView which is a tool that simplifies the collection and management of odor complaints in real time. It also converts odor complaint reporting into factual and quantifiable data and information. OdoView is a real time odor complaint management platform.
By simplifying the observations of odors by local residents it reduces the amount of handling time required by the authorities and plant operators. It facilitates the management of odor problems by improving communication between any plant or municipality and its residents. OdoView provides a proactive solution to help address odor complaints in real time.
- Diagnostic tool to identify odor sources
- Instant email alert upon notification of an odor
- Cloud-based solution (software online via your browser) with no license fees
- Custom configuration with help of our odor experts
- Online customized reporting tools
OdoView records observations continuously via an easy to use web interface. It allows observers, community members and employees to submit their observations in a simple and standardized way. The observations are continuously collected and analyzed to obtain useful information for the manager, including full data file, projection of observations onto a satellite map of the locations and surrounding area with analysis based on real weather conditions and reports.
This data and information can be used by the manager to optimize the management of odors at the site.
OdoView has mulitiple input points to fill in observations
- Paper Forms
Odors represent 70% of complaints about air quality. Nuisance odor complaint can be tricky because the information often comes too late. You can waste hours trying to confirm a complaint, identify the origin and adequately document the odor event. OdoView revolutionizes odor management with a mobile management platform for reporting complaints complete with instant notifications and the impact of weather data.
Communities can be better equipped to intervene, document odor events, identify sources and interact directly with site managers. OdoView facilitates the implementation and application of odor quality objectives. This supports your mission to improve the quality of life of your citizens and a sustainable development policy for your community.
In many ways, odor modelling is not very different from dispersion modelling for criteria pollutants. The same basic models in use and referenced by U.S. EPA Guidelines and clearinghouse memorandum. However, there are some basic differences in odor modelling from criteria pollutant modelling that are not clearly understood and quite often distorted.
The following blog post review the basics of odor modelling, why it is performed, what standards are being demonstrated and how the model set-up is different:
Odor sources are generally near ground level sources. Many are large area sources that may have an air or water vapor flux through the surface. Others may be volume sources represented by louver vents on the side of a building, open doors and windows. The odor concentrations at the source outlet may be highly variable depending on process variations, diurnal fluctuations and season cycles.
These factors are extremely difficult to take into consideration in classical odor impact studies. In essence, traditional odor impact assessments are made by Static modeling where the odor sources are sampled during a few campaigns and the olfactometric results are used to define a single steady state characterization of the sources or some modulations. Modelling is done using historical data (1 to 5 years). The result is a most likely odor impact assessment based on the pairing of "worst case" emissions with "worst case" dispersion.
Today, technology enables Dynamic Modeling to counter the limitations of old fashion olfactometric studies and take into consideration current wind fluctuations and odor emissions variations.
In addition to more accurate results and increased precision, the main benefit of Dynamic Modeling is mainly operational. Dynamic Modeling provides realtime odor plume information to plant managers for operational decisions and in dealing immediately with odor complaints. On the other hand, traditional odor impact assessments provide average odor impact indications form past data: This is useless for plant operators that are in the front line and need live information to take action and drive their process facing what is ahead of them, not behind (past).
|‘’While driving, it is useful to look in your mirror but you want a clear vision in your windshield’’
Dynamic modeling is a pairing in real time of monitored odor emissions and measured meteorology. The pairing of emissions and dispersion are not independent parameters as in the case above. The critical aspect of this is that odor control measures can be applied dynamically, based on predicted exposures and not limited to controlling the worst case condition. Dynamic modeling is the preferred option where the odor emission source is large and not easily contained using conventional odor control technology.
When conducting an odor modeling assessment, there are some additional considerations that need to be made. Most odor nuisance standards are incomplete when defining the frequency, intensity, duration, and offensiveness or character (FIDO) of an odor impact. However they are very important to assess in an adequate manner the odor exposure. As dispersion models are probabilistic, their output can be used as a relative risk quantifier of having an incremental odor perception or odor concentration above the existing odor background.
The averaging period associated with the collection of an odor sample is determined by the time it takes to collect the sample. So, if a 30-liter sample bag is filled at the rate of 3 liters per minute, then the averaging period for that sample is 10 minutes. That an odor panelist may take seconds or minutes to determine what that odor concentration or intensity is, does not change the averaging period for that odor sample.
In dispersion modeling, the averaging period associated with an odor plume impact is 1-hour when using dispersion coefficients based on boundary layer theory and can be as short at 10 to 15 minutes if the dispersion coefficients are based on Pasquil-Gifford-Turner dispersion curves.
To estimate odor impacts for periods of less than 1-hour, an adjustment factor needs to be applied.
The peak-to-mean ratio varies with turbulent intensity, but can often be simplified to the 1/5 power law. A consistent set of adjustment factors that can be applied across all turbulence scales has not been generally accepted. However, an odor nuisance standard may define a duration of less than 60 minutes.
Frequency of Occurrence
Odor nuisance standards do not preclude the occurrence of odors that are above the odor threshold limit. The nuisance standard only precludes that the frequency cannot be such that a person cannot enjoy the use of his property or conduct business. When conducting an odor impact assessment, one needs to define whether this translates to a 0.1, 1 or 10 percent exceedence criteria.
If you would like to know more about odor dispersion modeling or understand if your odor study was done correctly? Talk to a senior odor expert: