Mobile Organic Biofilm (MOB)

Case Study

Wastewater Equipment

Mobile Organic Biofilm (MOB)


The MOB™ (Mobile Organic Biofilm™) process is a unique and sustainable wastewater treatment process developed by Nuvoda to improve settleability, increase treatment capacity, provide simultaneous nutrient removal, and optimize process stability. The patented MOB™ process utilizes a highly renewable plant material processed as a medium for biofilm growth. The media core is machined to approximately 1mm in size, allowing it to act as an organically ballasted granular sludge, fixed-film hybrid system. With the advantages of using a lightweight plant particle with a high surface area and amazing absorptivity, we enhance the fixed film process. The same media particle acts as an adsorptive ballast creating stability which significantly enhances the granular sludge process.

The MOB ballasted media are fully mobile and free to circulate throughout the process and grow a stratified microbial community facilitating a robust and versatile simultaneous biological nutrient removal. Since the particles are free to circulate into the secondary clarifier, the improved settleability reduces effluent total suspended solids, improves clarifier capacity and makes dewatering sludge more efficient.


Mobile Organic Biofilm Process

  • Mobile ->  The media applied to the MOB process is mobile and able to circulate freely throughout the process without limitation of sieves or baffles.
  • Organic -> MOB’s ballasted media application, is an all-natural cellulosic plant that contains a core with high absorptivity.
  • Biofilm -> Due to the ballasted media’s high surface area, the ballast core is capable of granulizing or growing thick biofilms.



  • Reduces treatment footprint or significantly increases throughput capacity
  • Minimal mixing and aeration reduce energy consumption compared to other fixed film and granular sludge technologies
  • Simultaneous nutrient removal and settling reduce the need for polymers, coagulants and phosphorus precipitation technologies, reducing overall chemical cost
  • Simultaneous nutrient removal with up to 30-60% additional biological phosphorus reduction
  • Improves sludge dewatering, significantly reducing chemical and hauling expenses.
  • Easy, cost-efficient retrofits.
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