Technology Development

Mechanism of Membrane-Aerated Biofilm Reactor (MABR)

MABR – Compact & Energy-Efficient Biological Treatment

MABR supplies oxygen directly through gas-permeable membranes to the attached biofilm. This bubble-free, counter-diffusion mechanism enhances nitrification and enables simultaneous nitrogen removal with significantly lower energy consumption.

Key Benefits
  • Up to 50% more treatment capacity within existing tank volumes
  • Up to 4× lower aeration energy for oxygen transfer
  • Effective ammonia and nitrogen removal
  • Simultaneous nitrification and denitrification
  • Resilient to load fluctuations and process disturbances
  • Easy retrofit with minimal civil construction
  • Potential reduction of N₂O and greenhouse gas emissions
Typical Applications
  • Upgrade of existing activated sludge plants
  • Capacity expansion where land is limited
  • Ammonia and total nitrogen removal
  • Biological phosphorus removal enhancement
  • Municipal and domestic wastewater
  • Decentralized wastewater treatment and water reuse
  • Selected industrial wastewater applications

ANAMMOX – Energy-Efficient Nitrogen Removal

ANAMMOX is an advanced biological nitrogen removal process designed for wastewater with high ammonium concentration and a low C/N ratio.

Through a shortened nitrogen conversion pathway, anaerobic ammonium-oxidizing bacteria convert ammonium (NH₄⁺) and nitrite (NO₂⁻) directly into nitrogen gas (N₂). This process significantly reduces the demand for aeration and external organic carbon compared with conventional nitrification–denitrification systems.

Key Benefits
  • Up to 60% lower aeration energy
  • Minimal or no external carbon dosing
  • Up to 90% less sludge production
  • Approximately 55% lower CO₂ emissions
  • Lower operating costs for nitrogen removal
Typical Applications
  • Sludge digestion reject water
  • Landfill leachate
  • Ammonia and chemical wastewater
  • Monosodium glutamate wastewater
  • Textile mercerization wastewater
  • Livestock wastewater
  • Selected municipal and domestic wastewater streams
image