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Industrial odour control

Elixir Enviro Systems (P) Ltd (EES) specializes in providing

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Industrial wastewater treatment

At Enviro, we contemplate how better we can re-use the wastewater.

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Sewage treatment plants

We offer a complete range of services for sewage treatment plants,

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How to Treat the Exhaust Air from Poultry and Meat Processing Companies?

Industries like poultry and meat processing companies causes odour nuisance to the neighborhood. There have been several technologies to tackle this situation. The requirement of an exhaust air treatment system is determined on the basis of the size of the facility, the specific processing operations involved, the exhaust air volume, and pollutant load to be treated, and the resulting nuisance potential. Elixir enviro Systems Pvt Ltd ( is a pioneer in odour control. Elixir Enviro Systems Pvt Ltd designs the required upstream and downstream processes for the effective odour control strategy. The strategies include appropriate ventilation design and pretreatment steps for the optimal operation of the Odour Control Unit(OCU).

What kind of exhaust air treatment system should be used in a slaughterhouse? It could vary for different facilities and is purely decided on case-by-case basis. Here are the commonly used exhaust air treatment systems for slaughterhouses:

Biological exhaust air treatment

Biological elimination of pollutants from air is the most environmental-friendly technique since it ensures minimal use of chemical agents and in many cases, it comes as the lowest lifetime cost alternative compared with other treatment technologies. In biological exhaust air treatment, microorganisms are used to convert odour components to CO2 and H2O.


Bioscrubbers are also called Bio-washers. In the Bioscrubber, absorption of air pollutants and the reaction or degradation of the pollutants occurs in two reactors. In the first stage the air is being washed or gets in contact with the air having the pollutant load and the absorbent or the liquid absorbs the pollutant from the air. In the second stage, this absorbent is treated biologically and circulated back to the washing stage. If you look in general, the Bioscrubbers are mainly employed for highly soluble and low volatile compound treatment.

Bio-Trickling filter

The contaminated air is passed through the packing media made of inert materials. In these filters, a liquid phase is trickled into the media. The pre-humidification can be avoided in the bio-trickling filters as the water phase can provide the moisture for the biomass activity. In Bio-Trickling filters inert materials with chemical stability, low weight and good mechanical properties are preferred. These filters are well aerated systems and the microorganism responsible for the degradation are usually aerobic but deeper into the bed, there is also anaerobic degradation. The flip side of this process is the requirement of micro and macro-nutrient supplementation to assure that the microorganisms are getting enough nutrients for the growth. If this nutrient supplementation is not properly regulated, this can lead to clogging of the unit.


What is biofilter? It is basically a porous layer made up of organic material. It supports the microbial population. The odorous air is forced into the porous layer where the biological degradation takes place. Odor emission is controlled to over 95 percent with biofilters. It should be noted that media moisture content affects the functioning of biofilters. The biofiltration technology is an entrenched odour pollution control technology in various parts of the world.

Chemical Absorption

The solubility behaviour of contents determines the absorption of gas in liquid. In absorption too, the efficiency is determined by adjusting the pH to acidic or alkaline. Hence the absorbers function as chemical scrubbers.

Process combination

Rather than limiting to one technique, usage of a combination of techniques has proven to be more efficient in slaughterhouse facilities. For example, combination of chemical and biological processes is mostly practiced.


Odor emission is an important measure that should be taken by slaughterhouse or meat and poultry processing facilities for the well-being of humans and environment. Elixir Enviro Systems Pvt Ltd is a pioneer in the field of odour control from such industries. Different kinds of cost-effective and highly efficient odor control systems are designed and implemented by the company all over India.

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our happy clients

what people saying?
Ajay Sharma
Ajay Sharma

After installation of EES’ Cocofil biofilter, the complaints regarding fishy odour from the factory has diminished. The system is working well with very low operation cost as well as better efficiency as compared to our previous odour control unit.

The system is in operation since 2020

DGM, Avanti Feeds Ltd, Gujarat

Ranjin Das
Ranjin Das

EES is our trusted partner in the odour control and wastewater treatment. They have installed the odour control unit consisting of different scrubbers, biofilters and a Biological Nutrient Removal based ETP. There were instances where we had faced near to closure, but EES’s support helped us a lot. Currently EES has been given operation contract for the Odour Control Unit and for the Effluent Treatment Plant

The System is in operation since 2017.

Managing Partner, Collagen Marine Products, Kerala

Nitta Gelatin India Ltd
Nitta Gelatin India Ltd

Elixir Enviro Systems has installed two Biofilters at our ossein plant in 2015 and 2017 respectively. EES has demonstrated the odour removal efficiency in our presence with over 98% odour removal. We thank you for your support. 

Sr Manager, Kerala

RK Shah
RK Shah

Elixir Enviro System has done the installation and commissioning of Biofilter based Odour control system for Feed manufacturing unit at Orisa in 2017. The work has been completed in accordance with the Work order. We have also witnessed an odour removal efficiency of over 99%.  

AGM, Falcon Feeds, Orrisa

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Jafar Khan Colony, Calicut 673006,
Kerala, India

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