Sewage treatment plant
device · 1914 · Electric age
Biological treatment of waste water (activated sludge).
What it is made of
- Bar screens — has part. They catch large debris.
- Aeration tank with bubbling water — has part. A tank where activated sludge breaks down pollutants.
- Round clarifier tank — has part. Separating sludge from the treated water.
- Compressor — has part. Blowers supply oxygen to the microbes.
Principles and materials it uses
- Fermentation — uses. Activated sludge is microbes.
- Concrete — is made of. The tanks are concrete.
- Culture medium (agar) — uses. Waste water is cleaned by activated sludge — bacteria.
Where it is used
- Sewerage — is part of. Treatment plants.