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Activated Media Filters

Water often contains unwanted substances that are present as “dissolved solids”. Dissolved solids are defined as those smaller than 0.5 micron. They cannot be removed by sand filters, dual-media filters or by multi-media filters. Removing them requires the use of membranes or media that are “activated”. There are a variety of activated media, each tailored to the removal of one or more specific dissolved substances. They work by means of adsorption, absorption or ion exchange, and must be replaced periodically.

In all, these media can remove more than 200 dissolved substances.

Examples of dissolved substances often found in water sources such as ground water, river water or lake water include:

  • Iron
  • Manganese
  • Hydrogen sulfide
  • Arsenic
  • Odor
  • Unpleasant taste
  • Color
  • Hardness

Wastewaters often contain dissolved substances that need to be removed prior to discharge or re-use. Common examples include:

  • Oils
  • Hydrocarbons
  • Dyes
  • Soaps & surfactants
  • Solvents
  • BOD
  • COD
  • Heavy metals
  • VOC’s

Everfilt engineers specify the type of activated media suitable for each application and then size the filter system based on the operating parameters specified by the manufacturer of each media.

Some of the activated media available through Everfilt include:

  • Activated alumina
  • DMI-65
  • Birm
  • Greensand
  • Activated carbon
  • Organo clays
  • Ion exchange resins
  • KDF

Units are skid-mounted, and factory assembled, wired and tested. They are delivered ready for installation. Piping, valves, pressure gauges, filter media and accessories are included with the filter system.

Solar power, media air scour, and rinse cycle are available as options. Filter capacities are from 5 GPM to 14 MGD. Chemical injection packages, settling tanks, clarifiers, and disinfection units are also available.

Design Features Include:

  • 8 in. to 12 ft. diameter vessels
  • Automatic or manual operation
  • All steel construction (mild steel, 304 and 316 stainless steel)
  • Stainless steel vessel internals
  • ASME code or non-code vessels
  • Hydraulic, pneumatic or electric valves
  • High pressure and temperature options
  • Class 1, Div. 1 or 2 preparation

Email us at: everfilt@everfilt.com or call 1-800-360-8380 to speak with an applications engineer who can assist you in selecting the appropriate type and size filter to meet your requirements.

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