Link Snacks Wastewater Treatment

Link Snacks Wastewater Treatment


Alpena, SD

Construction Cost


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As demonstrated with the wastewater pretreatment facility design for Link Snacks, Inc. in Alpena, SD, Banner has the capability to address high strength industrial wastewater treatment. Previously the industry's waste was pretreated with a dissolved air flotation process and then sent to the City's anaerobic lagoons and retention ponds several miles out of town. However, issues with the pond process and the industry's growth necessitated additional pretreatment closer to the source of the wastewater. Link Snacks, Inc. sought out Banner's experienced staff to evaluate five aerobic and anaerobic treatment process. Based on an life cycle cost and performance analysis, an anaerobic membrane bioreactor (AnMBR) was recommended for the industry's high strength waste. The AnMBR is operational and is achieving the required reductions in BOD5 and TSS concentrations for this process. The AnMBR process is followed by an activated sludge/final clarification process for nitrification and hydrogen sulfide reduction. Nitrogen and phosphorus removal will be achieved with the future addition of an anoxic tank. A belt filter press is also provided for solids handling.

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Project Goal #1

Maintain permit compliance with a process that will reliably treat the wastewater and protect the City of Alpena's wastewater treatment plant.

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Project Goal #2

Energy efficient operation, selecting a process capable of creating a sufficient quantity of biogas that is used to generate both the electricity and the heat needed to operate the facility.

Project Features

  • Equalization Storage Allows for Continuous Operation
  • Ultra-fine (120 micron) Filtration System
  • Anaerobic Membrane Bioreactor (AnMBR)
  • Activated Sludge
  • Biological Gas Cleaning Process
  • Pumping, Piping, and Chemical Feed Systems
  • Back-up Power Supply and Control System
  • Laboratory/Office

Services Provided

  • Facility Plan
  • Topographic Survey and Platting
  • Preliminary/Final Design
  • Bidding Services
  • Construction Administration, Staking and Observation
  • Operations and Maintenance (O&M) Manual

Support Disciplines