Which landfill odour control products should you be using?
Landfill operators are caught in the middle: they offer the important community service of processing waste, but they also face increasing pressure to protect communities from environmental impacts like odours.
The increase in urbanisation has led to communities living closer to landfill sites, which makes these communities more prone to odour complaints. Tension often arises when developers want to expand residential communities, while landfill sites want to expand their perimeters to accommodate more waste.
One way to ease tensions between landfills and communities is to maintain tight control over landfill odours.
Here are the main odour control products to eliminate landfill odours and their best uses:
Odours are generated through biological reactions in landfill sites as trash is biodegraded. They can also be released through the vapours of products that are discarded into the landfill. Therefore, one obvious way to minimise the release of odour compounds is to smother the landfill surface with an odour treatment.
OdourPro supplies a foaming neutraliser concentrate for use as a surface odour control treatment. The foam forms a blanket over the surface preventing the release of odours from the landfill. A micronutrient blend present in the foam becomes part of the biological processes in the waste. At the same time, a powerful contact deodoriser neutralises the odour compounds.
Surface treatments do not require any infrastructure to be put into practice. They can be applied by a single person with the spray equipment, which is portable. This makes it easy to neutralise each problem area on the landfill site individually.
A misting system generates an airborne odour treatment that neutralises odours in the vapour phase. They consist of essential oils and organic plant compounds. Surfactants reduce the surface tension of water, thus allowing molecular bonding between the misting agent and odour compound.
The basic components of a misting system are:
- A pump
- Nylon tubing
- Potable water supply
- Dilution unit
- Misting nozzles
- Control systems, if required.
The misting system reactant is diluted with potable water in the dilution unit before being pumped through nylon tubing to the release points. As it is discharged through the nozzles, the solution is misted into the air. It mixes with odour compounds in the air and attaches to them. Misting systems convert odour compounds into non-volatile compounds, thus removing the chemical source of odours.
Misting systems can be permanent fixtures or portable systems. A typical installation would involve the use of a trailer to mount a high volume, long throw mist dispersant canon. The advantage of portable systems is that they can be moved to account for changes in wind direction and different sources of odour. As various parts of the landfill become operational, the misting system can be moved to the most effective site.
Vapour systems are the newest technology in the fight against odours from landfill sites. They have the major advantage of not needing potable water supply like misting systems, thus reducing operational costs and providing a more sustainable solution. In addition, the product has greater air suspension properties. The vapour treatment drifts in the natural airflow along with odour compounds, creating extended contact time for the active ingredient to do its work.
OdourPro supplies a proven odour vaporising solution, which is dispersed via tubing with holes in it using a blower. The ideal construction is to set it up on the boundary of a landfill site to treat odours as they travel through the air. Vapour systems do not mask odours but rather destroy the odour compounds completely.
Vapour systems are lower maintenance solutions than misting systems because of the fact that they do not use potable water and there are no nozzles, which could become blocked over time.
Using odour control products together
Landfills are complex environments that cover large surface areas. In addition, the process of managing odours can be extremely difficult with many factors to take into account, which means using only one odour control solution may not be enough.
In some cases, it may be necessary to combine treatments to maximise their effectiveness, and reduce the chance of odour complaints. A comprehensive strategy could include all three:
Using surfactant treatment at the end of a shift to prevent odours from being released during the night
Setting up a permanent vapour system on the perimeter fence for effective general odour treatment
Using a portable misting system to target problem areas.
Contact OdourPro for more information about odour treatment systems for landfills
OdourPro has more than 25 years of experience in providing solutions for odour treatment. Our expert team can help you evaluate your needs and propose the best solution to keep your landfill odour-free.
Find out more about our odour treatment systems for landfills, or call our expert team on 1800 510 704 today to arrange a consultation.
OdourPro on 21 November 2016
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