Degradation of waste at landfills and dumpyards generates gases like Ammonia (NH3), Hydrogen Sulfide (H2S), SOx, NOx, Total Volatile Organic Compounds (TVOCs), Methane (CH4), Methyl Mercaptan, etc. therefore, it becomes mandatory for some odour management system to be in place for landfills and dumpyards. It poses a potential long-term threat to the environment. It is, therefore, important to ensure that landfills monitored continuously so that they do not significantly harm the environment and endanger human health.

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2. 9 Reasons Why Odour Monitoring is Crucial for
Landfills
Real-time Solution for Odour Management
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3. Odour is a perception of smell, it may range from an unpleasant odour (like the rotten smell of garbage) to
a pleasant one (fragrance).
As per official estimates, around 62 million tonnes of solid waste is generated every year, and by 2030, it is
expected to reach 165 million tonnes. Of the 62 million tonnes, 43 million tonnes are collected, and only 12
million tonnes are treated. This means the rest 31 million tonnes go untreated and are dumped in landfill
sites, and this number is expected to grow as the total amount of waste increases.
Degradation of waste at landfills and dumpyards generates gases like Ammonia (NH3), Hydrogen Sulfide
(H2S), SOx, NOx, Total Volatile Organic Compounds (TVOCs), Methane (CH4), Methyl Mercaptan, etc.
therefore, it becomes mandatory for some odour management system to be in place for landfills and
dumpyards.
The mismanagement of waste in these landfills gives rise to harmful and odourful gaseous contaminants.
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Landfill Odour

4. So, How to Tackle This Situation?
Real-time odour monitoring is the answer. Monitoring odour emission can help in identifying the source
and implement controls. Odour Monitor is an electronic nose that detects and measures the foul smell and
the consequent gaseous components present in the ambient air.
Here are some of the features of an online odour monitoring system:
1. On-Time Identification
Tracking odour emission from landfills in real-time can help in immediate identification of the major
sources and the combined gases being released.
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5. 2. Chemical Characterization
Installing a network of e-noses (gas sensors) in and around landfills can sample these uprising gases and
immediately provide composition analysis. Through this, an apt solution can be implemented to suppress
the particular odour being generated.
3. Source Identification
Odour monitors can identify hot spots through hyperspatial data collection and plume dispersion
modelling. Monitoring odour emission can help in identifying the root cause and implementing the correct
solution to avoid maintenance and financial loss.
4. Dynamic Weather Conditions
Dynamic weather can diffuse the emission and affect the extension of the area in which odours spread
away from the landfill boundaries. Certain e-noses measure meteorological parameters through dispersion
modelling as well, along with the gaseous composition.
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6. 5. Impact Analysis
Tracing the emission can assist in identifying
the impacted areas. The source of these
gases (hot spot identification) can be
determined by backtracking the emission
using reverse modelling.
6. Community Monitoring
Creating a dense network of e-noses can
encourage the community to take part in the
initiative. Local people can be alerted of the
nuisance and the danger posed by the
gaseous emission from the landfills.
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7. 7. Maintaining Regulations and Guidelines
The purpose of landfill monitoring is to provide guidance on the design and implementation of an effective
and efficient monitoring program which will allow an accurate assessment of the impact of the landfill on
the surrounding environment.
8. Risk Assessment and Remedial Actions
A well-designed monitoring program will, in turn, allow for the early recognition of adverse environmental
effects and facilitate rapid corrective action.
9. Odour Suppression
Data from the odour monitors can help in analyzing the odour pattern and trend. These patterns can, in
turn, assist in deploying an odour suppression system around the landfill to mitigate the chances of odour
dispersion in the neighboring residential areas.
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8. Oizom’s Landfill Odour Monitoring Projects
1. Odour Monitoring in Kanjurmarg Dumpyard
Oizom assisted ESS Enviro to solve the perpetual problem of foul smell from Kanjurmarg Dumpyard, which
was becoming detrimental to people residing near Vikhroli and Bhandup by installing Odosense e-noses.
The solution provided real-time odour monitoring for source detection and impact analysis in the
neighbourhood for immediate corrective measures.
2. Muj Mahuda Landfill Monitoring in Vadodara
Oizom Odosense was deployed on the Muj Mahuda landfill periphery for solid waste management.
Odosense monitored all the gaseous emissions from the waste in real-time to identify the prime sources.
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9. To Conclude
The landfilling of waste poses a potential long-term threat to the environment. It is, therefore, important to
ensure that landfills monitored continuously so that they do not significantly harm the environment and
endanger human health.
Hence, odour emission from landfills needs to be addressed. The need to provide continuous odour
monitoring and maintenance plays a crucial role in landfill odour management by treating the source of
the odour problem rather than masking it.
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Oizom Instruments Pvt. Ltd.
306 Indraprasth Corporate, Anand Nagar
Road
Prahladnagar, Ahmedabad - India
+91-8866660025 | contact@oizom.com
Oizom - Savoie Technolac
House Boat 9, 12 Allee Du Lac De Garde,
Le Bourget du lac, France
+33 (0) 783426695 | hello@oizom.com
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