Improving dairy plant operating efficiency – Antwerp, Belgium case study

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Courtesy of Nordevco Associates Ltd.

The Problem
The INZA Dairy WWTP in Antwerp, Belgium was experiencing problems in the operation of its sewage treatment facilities. The problems centered on an excess concentration of foam developing on the surface of both the aerator and sedimentation tanks, excess concentrations of floating sludge in the effluent, and an overall reduction of the efficiency of the wastewater treatment resulting in average COD discharge levels of 130 mg/L. In addition, the energy costs of operating the facility were having a negative impact on the facility’s bottom line.

Our Approach
Upon examination of the treatment facility and review of both influent and effluent data, Nordevco Associates Ltd. staff realized that residence times for the influent was not sufficient to allow for a complete treatment of the dairy waste. In addition, the foam and floating sludge were reducing the efficiency of the aeration and treatment. As a result, it was decided to augment the capabilities of the treatment facility by applying the BactiDomus® Technology product to both the primary and secondary aeration tanks to break down sludge, enhance the aerobic degradation, and ease of application (applied to the surface area of both aerators).

The Technology
Nordevco’s BactiDomus® Technology was developed by a diversified group of research scientists working together at Universities in Belgium and France. Their goal was to create a mechanism with the flexibility to delivery biological solutions to a range of environmental issues more effectively and efficiently.

The foundation for the success of the BactiDomus® Technology was the development team’s clear understands that for any carrier material to be successful it had to meet specific underlying needs of the organisms:

  • Regardless of the organisms used, they would be cultured in a sterile laboratory and would require time to acclimate to the environment they were activated in.
  • Microorganisms, like humans, do not exist or thrive in isolation of each other but rather rely on others for stimulation and competition;
  • Organisms prefer to grow and live in colonies or flocs and prefer to attach to something to anchor these colonies;
  • Individual species of microorganisms do not work in isolation to break down organic compounds. To successfully break down any organic completely to CO2 and H20, a variety of different organisms are required;

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