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 contact product expert

Patrick Harden, P.E.
Product Manager

Hydro-Clear® Sand Filters

Ultimate reliability in gravity filtration
​The Hydro-Clear® pulsed-bed sand filtration system is an excellent solution when gravity filtration is needed. It features a unique underdrain system and a shallow bed of mono-media, fine-grained sand, a design which permits the filter media to be “pulsed” periodically as solids build up. Filter runs are extended and the filter is automatically kept on-line, despite varying loads, and changing water characteristics.



  • Tertiary treatment
  • Wastewater reclamation, reuse
  • Stormwater filtration
  • Combined sewer overflow (CSO)
  • Primary effluent filtration (PEF)
  • Algae removal
  • Commercial and institutional treatment

 key benefits

  • Low-profile design reduces excavation, concrete, and related structural costs
  • Regenerates media surface, extending filter runs; automatically keeps the system on-line during upsets
  • Effectively backwashes media in 3.5 minutes, at low power and water rates
  • Enables semi-automatic media cleaning; no manual grease removal, media replacement, or pre-chlorination
  • Steel package plants or field-erected concrete tanks for flow rates from 10 GPM to 120 + MGD.
  • Enables you to upgrade filtration capabilities using existing tanks
  • Fully automated controls keep plant in compliance 24/7/365
  • Qualified, experienced field technicians readily available for service and/or upgrades to your filtration system


  • ​Shallow, 10-inch bed
  • Mono media
  • Pulse Mix® system
  • Hydro-Scour® system
  • Chem-Clean® system
  • Easy-to-operate control system
  • Custom design
  • Pilot testing
  • Ideal for retrofits
  • Service Hydro-Clear® Sand Filters