- → Odour
- → Ethylene oxide and other epoxides
- → Hydrogen sulphide and volatile organic sulphur compounds
- → Ammonia and amines
- → Acrylates, acetates and aldehydes
- → Organic and inorganic acids
- → Halogenated compounds
- → Alcohols and ketones
- → Aromatic compounds
- → Hydrocarbons (alkanes, alkenes, …)
- → Phenol
- → Other volatile compounds
- → Dust and particles
Volatile sulphur compounds, such as hydrogen sulphide (H2S), dimethyl sulphide (DMS), dimethyl disulphide (DMDS) and methanethiol (MT), are often the predominant odorous compounds in the emission of a wide range of activities in the bio-industry (wastewater treatment, composting, rendering, digestion, …). Several of these compounds are also used in the chemical industry.
For the abatement of highly concentrated gas flows, the caustic scrubber technique is generally used for the abatement of H2S from air or (bio)gas, while the oxidative scrubber technique with a suitable oxidant and pH/ORP setting is required for the efficient removal of volatile organic sulphur compounds such as DMS, DMDS and MT.
For the abatement of discontinuous emissions, a dispersion fan can be applied, provided that the pollutant concentration does not exceed the local emission limits.
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