Odour elimination
Neutralisation of odours in the exhaust air from industrial plants and in wastewater treatment
Odours are generated and emitted during many different production processes, both in industry and in commercial enterprises and wastewater treatment plants. Following the amendment of the Sewage Sludge Ordinance (AbfKlärV), the issue of odour elimination has recently gained enormous significance in the context of
sewage sludge drying and the operation of sewage sludge incineration plants.
Odours are produced, for example, during food production, roasting processes, the manufacture of flavourings and spices, and at slaughterhouses. However, exhaust air streams containing mixtures of odorous substances – some of which are complex – are also generated at sewage treatment plants, in sewer systems, at sewage sludge treatment facilities and in many other technical processes.
The substances released in this process range from organic compounds such as alcohols, aldehydes and ketones, through sulphur-containing hydrocarbons such as mercaptans and cadaverine, to inorganic substances such as ammonia (NH₃) and hydrogen sulphide (H₂S). The use of solvents such as acetone and other VOCs can also cause significant odour emissions.
To treat these and other odour emissions, evoran Umwelttechnologie GmbH offers reliable and effective methods for removing odours and VOCs from exhaust air streams. Depending on the exhaust air flow rate, the type of pollutants and the pollutant load, evoran Umwelttechnologie GmbH provides suitable systems for eliminating odours:
- UV photo-oxidation systems
- Activated carbon filters
- Chemical scrubbers
- Catalytic oxidation systems
You can use our contact form to send us a quick and easy, no-obligation enquiry regarding your request. We look forward to hearing from you.
Removing strong-smelling substances from exhaust air
Common odour problems that can be treated using the evoran FOX-Technology exhaust air purification system include:
- Hydrogen sulphide, mercaptans, sulphides and other organosulphur compounds
- Ammonia, amines, skatole, cadaverine and other nitrogen-containing compounds
- Butyric acid, acetic acid and carboxylic acids in general
- Aldehydes and ketones,
- Alcohols, ethers, esters, phenols and other oxygen-containing compounds
- Terpenes, terpenoids and other aromatic compounds
- Roasting aromas and smoking agents
- Spice aromas and other substances from the food industry
The emission of odours and pollutants constitutes a burden on the environment and a nuisance to the neighbourhood surrounding production facilities. To prevent uncontrolled emissions of odours, requirements for emission reduction must be met in accordance with the Technical Instructions on Air Quality Control (TA Luft): “Odour-intensive exhaust gases must generally be fed into exhaust gas treatment systems or equivalent measures must be taken.” (TA-Luft, paragraph 5.2.8).
In many processes, such as waste treatment or the drying of sewage sludge, odour levels must not exceed 500 GE/m³.
You can find out more about odour removal and the elimination of hydrogen sulphide from exhaust air on the page about our reference project Abwasserkanal Emscher (AKE).
