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10 Cards in this Set

  • Front
  • Back
What are the three types of Trickling Filters
Standard Rate
High Rate
Roughing FIlter
Standard Rate Tricking Filter
Hydrulic Loading -
Organing Loading -
Typical Media -
Depth -
Hydrulic Loading - 25 to 100 gal/day/ft2
Organing Loading - 5 to 25 lbs BOD/day/1000ft3
Typical Media - Rock
Depth - 6 to 8 feet
High Rate Trickling Filter
Hydrulic Loading -
Organing Loading -
Typical Media -
Depth -
Hydrulic Loading - 100 to 1000 gal/day/ft2 ROCK
350 to 2100 gal/day/ft2 SYNTHETIC
Organing Loading - 25 to 100 lbs BOD/day/1000 ft3 ROCK
50 to 300 lbs/day/1000ft3 SYNTHETIC

Depth -
Roughing Filter
Hydrulic Loading -
Organing Loading -
Typical Media -
Depth -
Hydrulic Loading -
Organing Loading - 100 to 300 lbs BOD/day/1000ft3
Typical Media -
Depth -
Trickling Filter growth typicall sloughs off in...
Spring and Fall
Best time to start a Tricking Filter
Late April through Early June
Trickling Filter Daily Operations/Observations
Ponding
Filter Flies
Odors
Plugged Orifices
Distributor Arms
Tricking Filter Recirculation Rate -
Use the lowest recirculation rate that will produce good results.
Trickling Filter DO's
Rock - ___
Synthetic - ___
Rock 3 to 6 mg/L

Synthetic 4 to 8 mg/L
Trickling Filter Flies - Corrective Actions
- Increase Recirculation Rate - 200 GPD/ft2
- Keep Orifice Openings Clear
- Insecticides
- Flood Filter 24 hours
- Dose with 1mg/L chlorine