Chemistry · GCSE · Earth & Atmosphere

Waste water treatment

Waste water treatmentFree6:15Heddy Score 3 of 7, below the standard
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What you need to know

  • Screening removes large objects such as grit and rags before the water is treated further.
  • In sedimentation tanks, suspended solids settle out as sludge, leaving liquid effluent above.
  • Bacteria break down the organic matter left in the effluent, with air pumped in so they can respire aerobically.
  • Treated effluent is cleaner, but it is not drinking water.

In this clip

Runs 6:15, from 0:00 to 6:15 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
On YouTube

3M views · 30.7K likes · Concerning Reality 237K subscribers

As reported by YouTube on 2026-11-01. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

The sequence of treatment stages connects separation methods to a real treatment plant.

Concerning Reality on YouTubechecked 2026-10-18

Plays from youtube-nocookie.com. No YouTube cookies until you press play.