Ortho-Wash Troughs

Poseidon Filtration Systems® Ortho-Wash™ process combines air scour and backwash to vigorously clean filtration media while lowering backwash rates and waste volumes.  Ortho-Wash™ baffles, integrally-mounted as part of the backwash trough, prevent media loss by deflecting air and providing an adjacent quiescent volume to settle out lightweight anthracite or GAC.  Negligible media loss occurs when air scouring and backwashing at prescribed rates.  Ortho-Wash™ troughs with baffles are constructed of either 304 or 316 stainless steel to provide durability and maintenance-free service. Baffled wash troughs

Baffled Wash Trough
Wash Trough

Wash Trough Key Benefits

Negligible media loss during simultaneous air scour and backwash at prescribed rates

• Allows for sustained air scour with backwash

• Wide range of capacities

• Stainless steel construction provides a long service life

• Adjustable baffles and weirs for optimum performance

Media Retention Troughs

(Before Grout Install)

How it Works



Media Retention Trough Process

Ortho-Wash Phase

Wash Trough in Air Purge Phase

Air Purge

Troughs Rinse & Restratify

Rinse & Restratify

With Simultaneous Backwash and Air Scour

  • Optimizes Filter Performance
  • Superior Media Cleaning
  • Maximizes Filter Run Lengths
  • Minimizes Operating Costs
  • Reduces Backwash Flow Rates & Volume
  • Lowers Capital Costs
  • Flexible Media Selection