Category:Backwashing

Media in category "Backwashing"

The following 2 files are in this category, out of 2 total.

• Backwashing demo at a water filtration plant.webm 45 s, 1,920 × 1,080; 133.02 MB
  
• 
  Backwashing in a water filtration plant.JPG 1,876 × 2,526; 2.59 MB