High Rate Downflow (HRD) Filters

 
High Rate Downflow Sand Filter

HRD Filter

High-Performance Filtration

The HRD sand filter offers high-performance filtration even in difficult process applications.The flux rate is typically 5-20 gallons per minute per square foot (GPM/ft2) and utilizes a proven distribution design to enable excellent hydraulic coverage during high-rate operation. The media bed is similar to the conventional filter except that the high veolcity can drive the solids deeperintot the media bead and achieve higher solids loading and extended run cycles.

Our Solution: Creating innovative Filtration Systems

Our high performance filters can be used for filtration of seawater for injection systems, produced water, refinery waste water, steel mill caster water and severe applications where oil or sticky solids are present. Air scour blowers and backwash pump systems are provided for proper cleaning of the media

High Rate Downflow Filter Applications

Application Flowrate GPM/SQ. FT.

Produced water-disposal/reinjection

10-12

Refinery and Petro-Chem waste water-use dual media, air scour

10-12

Industrial waste water-disposal/reuse

8-10

Steel-continuous casting cooling water circuit

10-12

Fish hatcheries, mammal pools, aquariums, etc.

12-15

Seawater injection with deaerators

8-20

River water, <44 ppm TSS

8-10

Pulp and paper feed water

10-12

 Power-ash pond, oily waster water

10-12