Combination Sewer Overflow (CSO) Mixing Equipment

Combined sewer overflow (CSO) tanks and basins are designed to collect surface runoff and handle extra wastewater during peak periods when wet weather flow exceed the normal capacity of the wastewater treatment plant.  Adding wastewater disinfectants to these tanks and basins is critical to treat as much of the wastewater as possible to in order to protect the environment and natural waterways.  Proper mixing is needed to ensure uniform distribution of disinfectants as well as keeping the solids suspended so the wastewater can be properly treated if a CSO storage tank is used after the peak wet period has ended.

CSO channels are typically characterized by high and fluctuating flow rates.  The Pulsair mixing process has been proven to uniformly disperse chemical disinfectant into fast flowing channels and chlorine contact chambers.  The Pulsair mixing process fast, highly energy efficient and requires zero maintenance inside the tank, basin or chamber.

Granite City WTF Clearwell Addition

Benefits of Pulsair mixing for CSO basins and tanks:

  • Mixes wastewater faster than conventional mixers

  • Keeps solids suspended and disinfectants uniformly mixed in tank

  • More energy efficient than air spargers and mechanical mixers

  • ZERO in-tank maintenance

  • Mix 100% of the tank with no baffles or dead zones

  • Mix at any liquid level for better tank utilization

  • Adjustable speed and power for maximum efficiency

  • Proven mixing technology with 30+ years of experience & thousands of installations

  • Custom engineered to fit any tank size, configuration or any number of tanks

    large bubble wastewater mixing system

Contact Pulsair to learn more.

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