Hydrogen sulfide is a gas that smells like rotten eggs. It is colorless, flammable, corrosive and toxic. The gas is formed when organic cargoes are microbially decomposed in the absence or absence of oxygen.
Hydrogen sulfide is heavier than air, so it accumulates on the ground, especially in low-lying areas. When dissolved in water, hydrogen sulfide forms sulfuric acid, which can attack equipment and masonry.
Hydrogen sulfide: Hazards
Hydrogen sulfide irritates the mucous membranes and respiratory tract. Poisoning can be noticed by headaches, nausea, cramps, eye or skin irritation. Dangerous damage to the lungs is often not noticed right away.
Even if the smell actually warns against it, even small doses of the gas can switch off the sense of smell, so that the poisoning is not noticed at first. In no case is the smell a reliable indicator.
The dangers depend on the H2S concentration and duration of exposure:
< 100 ppm: life-threatening after several hours.
above 100 ppm the sense of smell becomes numb
> 100 ppm: life-threatening after more than one hour, irritation of eyes and respiratory tract
from approx. 1000 ppm: life-threatening in a few minutes
Where hydrogen sulfide is formed
Hydrogen sulfide is often found in sewers and biogas plants, especially when biowaste or animal by-products are used
Hydrogen sulfide is also frequently found in nature, e.g. at mineral springs or at wells of crude oil or natural gas.
In industrial production, hydrogen sulfide is used, for example, to refine lubricants and to produce medicines and pesticides.
Hydrogen sulfide Limit values of TA-Luft
The TA-Luft provides for a hydrogen sulfide limit value of 15 g/h in the mass flow.
The mass concentration must not exceed a hydrogen sulfide value of 3 mg/m³.
Our cleaning technology
We neutralize hydrogen sulfide in the exhaust air in an environmentally friendly manner using UV-C and UV-ozone technology. The remaining exhaust air is cleaned with an activated carbon filter.
The product
CEA
Clean Exhaust Air
UV-Ozon-Abluftreinigungsanlage zur Erfüllung der TA Luft
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