Wastewater Collection · Know the Network
What Causes Sewer Odor and Corrosion (H2S)?
Hydrogen sulfide can cause odor, health hazards, and damage to collection-system parts.
Wastewater can turn septic when it sits without enough fresh air. Bacteria may then produce hydrogen sulfide, called H2S. People often describe its odor as rotten eggs. Smell is not a safe test because higher levels can quickly dull the sense of smell.
H2S can collect in wet wells, manholes, and force-main discharge areas. It can also help form acid on damp surfaces. Over time, that acid can damage concrete, metal, coatings, and electrical parts. For example, a manhole near a force-main discharge may show a rough concrete crown and badly rusted hardware.
Operators record odor complaints and visible damage. They use gas meters for safety and report changing conditions. Ventilation, cleaning, chemical feed, coatings, and system changes may be used by the utility to control the problem.
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Introduction to Wastewater Collection Systems
This page comes from the free course. It follows wastewater from the building drain through sewers and lift stations to treatment, one step at a time, with short knowledge checks and a certificate of completion.
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