MBR Technology

Membrane Bioreactor (MBR) technology represents the cutting edge of biological wastewater treatment, combining conventional activated sludge processes with ultrafiltration/microfiltration membranes (0.04-0.4 micron pore size). This integration eliminates the need for secondary clarifiers while producing exceptionally high-quality effluent (TSS <1 mg/L, turbidity <0.2 NTU) suitable for direct reuse applications including cooling towers, irrigation, and industrial processes.

MBR systems utilize membrane filtration that completely retains suspended solids and microorganisms, achieving >99.99% bacteria removal and >95% virus removal. Operating at high biomass concentrations (8,000-15,000 mg/L MLSS vs. 2,000-4,000 mg/L in conventional systems), MBR technology delivers superior organic removal (>98% BOD/COD reduction), excellent nitrification (>95% ammonia removal), and footprints 50-75% smaller than conventional treatment plants. Typical flux rates of 15-25 LMH (liters/m²/hour) ensure efficient treatment with hydraulic retention times of just 4-8 hours.

Spans Envirotech's MBR solutions feature state-of-the-art hollow fiber or flat sheet membrane modules with expected service life of 7-10 years. Our systems incorporate advanced fouling control strategies including optimized air scour patterns (consuming 0.3-0.5 Nm³ air/m² membrane/hour), automated backwashing cycles, and chemical cleaning protocols. Total energy consumption typically ranges from 1.2-2.0 kWh/m³ treated, with the premium in operational cost justified by superior effluent quality enabling revenue generation through water sales or regulatory credits.