Media filtration is a water treatment process that uses granular material to remove impurities. This form of filtration can be tailored to remove biological matter such as bacteria, algae, protozoa and other pathogenic micro-organisms.

Delco Water uses automation and monitoring on filter columns to improve filter performance such as backwashing efficiencies, filter run lengths and optimizing different filter modes of operation. During this process, the automation levels can be customized to balance operator involvement and budget constraints.

At Delco Water we offer a wide variety of different types of media filtration that can be used as a standalone treatment or integrated to a larger treatment system. Filter media can be found in pressure vessels, water basins, and gravity filters. All the equipment is sized to adhere to design specifications and requested filtrate water quality.

Types of Media Filtration

Our media selection allows us to offer custom solutions based on client needs.

  • Ceramic Media

    • Filtralite
      • A highly porous engineered ceramic media with the potential to increase the capacity of gravity filters by 1.5-2x
      • For more information on Filtralite, click here

  • Calcite Media

    • Calcium carbonate media, also known as calcite, can be used for pH adjustment. As low pH water dissolves the calcium carbonate, the addition of calcium raises the pH
    • Dissolved calcite introduces alkalinity back into the treated water stream
    • Raising the pH and re-mineralization helps with water stability and corrosion factors

  • Adsorptive Media

    • “Activated Alumina”
      • Primarily used to remove dissolved constituents such as arsenic, fluoride and sulfur
      • Removal properties of activated alumina is pH dependent
      • Process requires chemical addition for removal
    • “GAC”
      • Targeting removal of chlorine and dissolved organics
      • Taste and odor removal
      • PFAS treatment

  • Greensand

    • Greensand is specifically used to remove iron, manganese, and arsenic. Greensand requires the use of chemical oxidant like chlorine or potassium permanganate to oxidize incoming dissolved iron or manganese, or regenerate the media bed

  • Sand & Anthracite

    • Commonly used for turbidity removal
    • Media depths and pore sizes are chosen based on water quality
    • Dependable and proven media widely used in municipal applications

  • Ion Exchange

    • Ion exchange describes a specific chemical process in which unwanted dissolved ions are exchanged for other ions with a similar charge
    • Two common ion exchange methods in water treatment are softening and deionization

  • Catalytic Media

    • Catalytic media is used for enhanced efficiency for specific dissolved constituents