Microbial Enzyme Consortia Achieve 50–70% COD Reduction in Industrial Wastewater Treatment

A recent study highlights the potential of microbial enzyme consortia in treating industrial wastewater, particularly from the food and textile sectors. Researchers report that these consortia can achieve a 50–70% reduction in chemical oxygen demand (COD) within 24 to 48 hours when used in aerobic biological treatment processes. This level of efficiency brings food industry wastewater within the discharge standards set by the Central Pollution Control Board (CPCB). Additionally, the consortia demonstrate significant biochemical oxygen demand (BOD) reduction and effective removal of textile dyes.

The findings reveal that these microbial consortia exhibit multi-enzyme activity, with members collectively producing enzymes such as protease, lipase, amylase, cellulase, and oxidoreductase. These enzymes play a critical role in breaking down organic pollutants present in wastewater. For textile effluents containing azo dyes, specific consortium members capable of producing laccase and peroxidase facilitate dye decolorization while simultaneously reducing COD and BOD levels. The study underscores the potential application of enzyme-based solutions for addressing environmental challenges posed by industrial effluents.

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Date: April 6, 2026

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GOAI