Infrastructure of the Sewage System／下水道のしくみ

Last Update : 2025/2/28 17:30

Before unclean water from the city is returned to the rivers and oceans, it flows via sewer pipes to the purification facility where it is purified.

  1. Sewage pipes
  2. Manhole
  3. Silt basin
  4. Primary sedimentation tank
  5. Reaction tank
  6. Final sedimentation tank
  7. Disinfection facilities
  8. Water quality inspection
  9. Sludge treatment facility

ページの先頭へ戻る。