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Mobile Pressure Filters

Efficient Single-Cell Backwash System With Streamlined Underdrain Design

This system is highly effective for the removal of iron, manganese, turbidity, arsenic, mercury, and other contaminants. It generates its own filtered water for backwashing directly from the source, eliminating the need for a separate filtered water tank. The operation is fully automated with integrated valving and controls.

Influent water flows through each cell's filter media bed, where particulates are captured via depth filtration. The filtered water then passes through the underdrain and exits the system. Backwashing occurs based on differential pressure and effluent turbidity, with only one cell undergoing backwash at a time. The single underdrain design allows backwash water to be recycled from active cells to the backwash cell, removing the need for extra pumps and large storage tanks. This efficient configuration minimizes equipment requirements and enhances overall system performance.

Benefits and Features

Applications

  • Removal of heavy metals: arsenic, iron, and manganese.
  • TSS / turbidity removal
  • Pretreatment to reverse osmosis
  • Cooling tower make-up
  • Surface water treatment
  • Other industrial process water treatment

Features

  • 750 gpm maximum flow rate
  • Five(5) cell vessel mounted to trailer
  • PLC & HMI to act as master control panel
  • Multimedia filter consisting of anthracite and sand
  • Integral air compressor and blower

Benefits

  • Complete self-contained system
  • Small footprint
  • Quick turnaround
  • Reduced downtime
  • Installation and operations expertise
  • No capital investment

Specifications

  • Flow Rate

    Max Hydraulic Flow Rate (per Trailer)
    750 gpm
    Min Hydraulic Flow Rate (per Trailer)
    360 gpm
    Design Flow Rate (per Trailer)
    375-750 gpm

  • Filtration

    Total Filter Area
    125 ft2
    Filtration Rate Design
    3-6 gpm/ft2
    Minimum Flow for Backwash
    360 gpm (@ 60°F)
    Air Scour Flow per Cell
    75 scfm (@ 5 psi)

  • Dimensions

    Trailer
    46'-8" L x 8'-4" W x 13'-2" H

  • Weight

    Trailer (Shipping)
    55,000 lbs (no media installed)
    Trailer (Operating)
    117,000 lbs

  • Connection Sizes

    Influent
    6" 150# ANSI RF Flanges
    Effluent
    6" 150# ANSI RF Flanges
    Backwash Waste
    6" 150# ANSI RF Flanges

  • Miscellaneous

    Trailer Material of Construction
    Painted Carbon Steel
    Power Requirements
    460VAC / 60Hz / 3Ph / 100A

Case Studies

Temporary System Best Solution for Power Plant

A retired power plant in the Southeast U.S. chose WesTech's fully operated mobile solution for decommissioning rather than investing in permanent equipment. The three-year contract includes a treatment train with a 750 gpm capacity, reducing TSS, mercury, and arsenic from coal ash pond water. WesTech's system, supported by a technician, runs efficiently and cleanly, offering flexibility for scaling.

Rental Eliminates Plant Maintenance Disruption

A resort town needed to upgrade its aging Trident HS water treatment plants without disrupting service. To fill the gap, the town rented a mobile pressure filter along with a mobile ballasted flocculation system, treating 500 gpm of influent. The system was installed in two weeks, ensuring low-turbidity water while the Trident units were serviced. The upgrade went smoothly, with no water supply disruptions.