BIOSTYR® Biological Aerated Filter

The BIOSTYR® process combines biological treatment, clarification, and filtration into one compact system. With installations throughout the world, BIOSTYR is proven to be an exceptional technology for meeting today's stringent effluent limits. BIOSTYR is an ideal process for plants where footprint is limited, close proximity to neighborhoods is a concern, or expansion is desired.

BIOSTYR Process

The BIOSTYR process is a high-rate upflow submerged media biologically aerated filter (BAF).The process is carried out in a series of individual cells containing submerged buoyant media called BIOSTYRENE. The incoming wastewater and air, which is injected at the base of the cell, flow concurrently through the BIOSTYR cell. The BIOSTYRENE media provide a high specific surface area where microorganisms attach and act as a filter media for suspended solids removal.The media is retained in the cells by a precast concrete nozzle deck integral to the structure.

BIOSTYR Applications

Secondary Treatment

Following primary clarification, the BIOSTYR can provide secondary treatment. Removal of carbon, suspended solids and ammonia are accomplished in a single step, providing a compact solution.

Nitrification

BIOSTYR can be used to expand an existing secondary treatment process to provide tertiary removal of ammonia while further polishing of suspended solids and carbon.

Denitrification

BIOSTYR denitrification applications may be arranged in two configurations.A denitrification BIOSTYR can be added to an existing BIOSTYR process utilized for secondary or tertiary ammonia removal. Also, a denitrification BIOSTYR may be placed after an existing secondary treatment process, enabling the plant to meet low total nitrogen limits.

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BIOSTYR Influent Channel

BENEFITS

  • Compact footprint; Ideal for constrained sites
  • Downstream clarifiers not necessary, decreasing operation and maintenance requirements
  • Treated water of exceptional quality, even in very cold climates
  • Footprint allows for process to be easily enclosed, neighborhood friendly
  • No periodic replenishment or replacement of media required, decreasing maintenance yearly costs
  • Filter influent screened at 10 mm bar or mesh; achieved by plant's headworks

Top View of BIOSTYR Cells

For additional information on the Biostyr process, please contact Michele Kline at (919) 677-8310.

BIOSTYR Empty Cell