Generally speaking, foul odors at treatment plants originate from the anaerobic decomposition of organic compounds. A natural by-product of anaerobic digestion is hydrogen sulfide (H2S), which gives off a strong, nauseating smell.Jun 1, 2016,
In most cases, the root cause of the smell is an anaerobic, or septic, condition where the oxygen flow to the water or wastewater is limited. When that happens, microbes can thrive which give off hydrogen sulfide, AKA “the rotten egg smell”.
Ensure any air vents have not been blocked – sewage systems need good air flow, it is a common mistake to block air flow when there are smells (to stop the smell getting out) however, the right way is to allow the gas to ventilate (preferably above your roof).Feb 2, 2018
As anaerobic digestion of the waste takes place, the organisms that break down the waste release certain gases like hydrogen sulfide and methane. These gases do not smell pleasant. ... In this process, hydrogen sulfide, carbon dioxide, and methane are produced and add to the smells found in a wastewater treatment plant.Feb 3, 2021
If your sewage treatment plant is regularly serviced by a professional – at least once a year – then it shouldn't smell. If there is a foul odour, then call for a service as soon as possible to isolate and fix the problem.Apr 2, 2020