Real-time odour impact analysis and complain management

REAL-TIME ODOUR IMPACT ANALYSIS AND
COMPLAIN MANAGEMENT
© Oizom Instruments PVT LTD
www.oizom.com | hello@oizom.com

INTRODUCTION
Odour is the perception of smell; it may range from being unpleasant (like rotten smell of garbage) to pleasant
(fragrance). Odours, pleasant or unpleasant; are produced by inhaling air-borne volatile organic and inorganic
compounds.
Due to its subjective nature, the level of odour sensitivity can vary person to person within the same
community. People are increasingly complaining about their inability to enjoy their own property and outdoor
activities such as gardening, playing outside etc. due to odour nuisance in their neighbourhood.
OLFACTOMETRY
Olfactometry is the method of
converting human sensory signals
of odour perception into measurable
values.
Usually, a group of people are
employed as a human panel for
odour detection and assessment.
Headache, Nausea, Stress, Anxiety,
Vomiting, Sleep Disorder, Behavioural
Changes.
Irritation to eyes, respiratory tract,
skin, bronchi, lungs.
Real-time odour impact analysis and complain management

Odour Intensity:
Odour intensity is the
perceived strength of an
odour at a given
concentration.
Odour Character:
Odour character or quality is the
property to identify an odour
and to differentiate it from
other odour of equal intensity.
Odour Persistence:
It is used to characterize the
decrease in intensity of an
odour as it is increasingly
diluted with air.
Hedonic Tone:
Hedonic tone is a subjective
measure of general
offensiveness of the odour. The
hedonic tone is independent of
odour character.
Odour Detection Threshold Value:
The detection threshold value is the concentration of an
odorous compound when it is just detectable by a human
olfactory system. It is expressed in μg/m3 or ppb.
0 7
-4 40
Extremely
Unpleasant
Extremely
Pleasant
No
Odour
Strong
Odour
ODOUR PROPERTIES Real-time odour impact analysis and complain management

Frequency
How often an individual is exposed to odour.
Intensity
The strength of the Odour.
Duration
The length of exposure.
Offensiveness/Character
The character relates to the “hedonic
tone” of the odour, which may be
pleasant, neutral or unpleasant.
Location
The type of land-use and nature of human
activities in the vicinity of an odour source.
Acute Odour
High Intensity / Highly
Unpleasant Odour
Short Period
(Few Minutes to 1 hour)
Typical causes:
Highly variable and uncontrolled discharges,
process malfunctioning.
Chronic Odour
Low Intensity / Moderately
Unpleasant Odour
Long Period
Typical causes:
Discharges from processing and manufacturing.
ODOUR DEVELOPMENT Real-time odour impact analysis and complain management

‘L’ is for location in FIDOL. Sensitivity of the odour receiving environment
must be taken into account, and should be part of any odour assessment.
Moderate to High
Sensitivity
Low Sensitivity High Sensitivity
Parks
Residents
Schools
Hospitals
Tourist
Place
Rural
Residents
Markets
Public
Roads
Industrial
Area
RECEPTOR SENSITIVITY Real-time odour impact analysis and complain management

Water and
Wastewater
Treatment
Plants
Landfill
Sites
Industries
(Pulp and Paper,
Chemical, Fertilizers, etc)
Odour is a sign that unhealthy chemicals surround us.
K. K. Agarwal, Former President, Indian Medical Association
“
”
Odour Complain:
Time and place of odour complains provides vital insights
regarding the probable source of odour, odour
characteristics, intensity, frequency and duration of odour,
extent of odour nuisance etc.
Usually, officials from landfill sites, industrial plants or
respective government agencies visit the complaint sites.
The officials assess FIDOL parameters and record wind speed
and wind direction.
The primary aim during field visit at odour complaint place is
to comprehensively document the odour assessment in
order to identify odour source and assist in resolution of
odour complaint.
Sources:
ODOUR MANAGEMENT Real-time odour impact analysis and complain management

The figure shows geographical spread of
complaints, which helps in understanding
the extent of odour.
The time of odour complaints provides helpful insights
in identifying probable cause of odour generation.
ODOUR COMPLAIN Real-time odour impact analysis and complain management

Field observations play a crucial role in validating
results of dispersion models.
Field observations begin at the complainant’s
location and odours are traced back to the source.
Observations are made upwind and downwind of
the facility and at the fence line of the suspect
facility.
Field observations through community survey.
- Real Time Odour concentration can be provided by Sensor-based air monitoring systems such as OIZOM’s
OdosenseTM.
- Automated Odour Suppression Systems and warnings are possible based on the threshold detection value
of various compounds. (WP:5 Link)
FIELD OBSERVATIONS Real-time odour impact analysis and complain management

- Real-time monitoring data along with meteorological
and land-use data are fed into a model to generate
concentration contours.
- Output: real-time Odour Impact Assessment.
- Modelling the odour dispersion helps in predicting the
concentration of odorous compounds downwind to
the generation source.
- Dispersion modelling is commonly used to predict the
potential effects of new odour emitting activity.
LOW
MEDIUM
HIGH
SEVERE
Properties
of Odour
Wind Speed and
Wind Direction
Terrain Temperature and
Humidity
Factors Affecting Dispersion Modelling
IMPACT ASSESSMENT Real-time odour impact analysis and complain management

Odour Impact Assessment integrated to a GIS platform helps in:
- Understanding odour exposure and potential impacts on population
centres.
- Verifying and investigating odour complaints
- Complying with industrial permits and odour legislation
- Assessment of long-term odour impacts
- Identifying potential odour sources.
- Development of odour index.
- Enforcing and updating odour regulations
- Odour control efficiency, and leakage warnings.
- Smart complaint resolution improves a company's image and
provides citizens a clean, healthy and productive outdoor
environment.
COMPLAIN RESOLUTION Real-time odour impact analysis and complain management

PRODUCT VARIANT PRODUCT APPLICATION PRODUCT PARAMETERS
Odosense Lite General applications
SO2, H2S, NH3, Temperature,
Humidity
Odosense Smart Extensive applications
SO2, H2S, NH3, CH3SH, CH4, TVOC,
Temperature, Humidity
Odosense Pro Critical applications
SO2, H2S, NH3, CH3SH, CH4, TVOC,
CH2O, NO2, Cl2 Temperature,
Humidity
OIZOM’S OFFERING Real-time odour impact analysis and complain management

Features:
- Real-time Odour Data.
- Easy integration to odour suppression system.
- Odour Dispersion Analysis and Odour Impact Assessment.
- Capable for On-site and Periphery monitoring.
- Source identification and Data Driven Odour Analysis.
- Smart Alert and Warning system.
- Smart Complain Management.

- Oizom installed Odosense near STPs & ETPs of the Palava city,
India. This solution enabled the maintenance and cleaning crew
to track the odour concentration from these plants in real-time
and take corrective measures for its control.
- Oizom Odosense solution has enabled the authorities to trace
real-time pollution in their city.
CASE STUDY:
STP Odour Monitoring in Palava, India
- By monitoring the odour emission from the landfills and
STPS or ETPS, the authorities are able to take data-
driven decisions by identifying the odour source and
implementing corrective actions.

Real-time odour impact analysis and complain management

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