The AnMBR LE™ system combines a low rate completely mixed anaerobic reactor with Aquabio’s proprietary low energy UF membrane separation system. This combination results in a number of advantages in circumstances which favour anaerobic treatment with a focus on very high COD removal rates and biogas recovery.

The membrane separation stage provides complete solids retention thus uncoupling the hydraulic and solids retention times allowing for optimised long sludge ages which maximises COD reduction and provides higher biogas yields. The process is more tolerant to TSS and FOG than granular anaerobic systems and thus provides simplified pre-treatment requirements.

Suitable for highly concentrated organic wastewater streams with COD concentrations in excess of 15g/l up to 250g/l
Low/medium flow rates, from 90 to 2500m /day
When Sludge Bed and granular AD technologies are less suitable e.g. wastewaters with very high COD, high TSS, salinity and/or fats oil and grease
Where there are concern about media, or packed bed, technologies
Combined with Aquabio’s AMBR/RO/UV water re-use technology for potable/demineralised applications
AnMBR Diagram 1
AnMBR Diagram 2 Animation
Key Features/Benefits
High quality effluent >98% Total COD removalCompletely enclosed pumped sidestream
Greater Tolerance of TSS, salinity and Fats, Oil & GreaseNo gas (e.g. methane, nitrogen) scouring is required for the membranes
No biomass retention problemsEffective management of scale
Uncoupled hydraulic and solids retention times with complete solids retention and controlled sludge ageCIP ‘in loop’ cleaning
Low energy biomass separationAdvanced pretested, standardised software and control system
No Flocculants/Coagulants required (which can cause process issues and create high OPEX costs)Lower cost of membrane replacement
Simpler pre-treatmentReduced maintenance, no cranes or working at height required with external to Bioreactor Servicing
Robust and consistent performanceModular design allows for ease of expansion
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