Otis, MA Municipal Wastewater Treatment Plant


Product Description

Bioclere™ is a modified trickling filter over a clarifier (settling tank) that is designed to treat wastewater with varying organic and nutrient concentrations. Its natural fixed-film biological treatment process is resilient, energy efficient, compact and simple to operate. Within the Bioclere filter, wastewater is evenly distributed over the surface of plastic media where microorganisms known as biomass attach themselves to the media and consume BOD/COD and ammonia-N. Residual solids from the treatment process settle in the clarifier below the filter and are evacuated by a recirculation pump while clean effluent leaves the system by gravity. Modular Bioclere™ units can be installed in parallel to treat large flows or in series to achieve higher performance standards.


  • Treats flows from 200 to 100,000 gpd
  • Treats up to 20,000 gpd in a single unit
  • Low maintenance costs
  • Low energy usage (< 1.3 watts / gallon treated)
  • Small footprint
  • Modular design enables phased construction
  • Durable fiberglass & PVC construction (50 year useful life)
  • Sealed and insulated for seasonal conditions
  • Internal gravity flow system
  • Treats high strength waste
  • Fully Automated PLC Control Systems

Process Advantages

Proven History
The Bioclere™ was developed over 50 years ago and has been installed in over 15,000 applications around the world including commercial centers, residential communities, municipalities, schools, hotels, hospitals, supermarkets and more.

Stable & Resilient Biological Process
Bioclere™ can accommodate intermittent flows, extreme temperature variations and fluctuations in organic & nutrient loading.

Nitrogen Conversion & Reduction
Bioclere™ systems can be designed to effectively reduce ammonia-N, nitrate-N, and total nitrogen concentrations.

Minimal Sludge Production
Biological fixed-film processes are known for their extensive microbial communities that enable efficient digestion and mineralization of sludge.

Self-Regulating & Purging Biological Filter
Bioclere™ media beds never require replacement or cleaning. The media is constructed of UV resistant durable plastic with > 95% open space giving it an indefinite lifespan without the potential for plugging. Biomass naturally sloughs off of the media and regenerates itself eliminating the need to manually clean or backwash the filter.

Extended Leach Field Life
Bioclere™ reduces BOD & TSS concentrations by 85% to 99%, preserving the life of a drain field indefinitely.


Project Snapshots

Skaket Corners, Orleans, MA

Stow Elderly Care Meeting House, Stow, MA

Guantanamo Naval Air Station, Guantanamo Bay, Cuba

Let's discuss your treatment needs. Contact us for a no-obligation consultation.