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COD Degrading Bacteria

Updated: 2026-08-06

Overview

COD degrading bacteria are microbial strains engineered or selected for their ability to break down organic compounds in wastewater, thereby reducing Chemical Oxygen Demand (COD). These bacteria are critical in industrial and municipal wastewater treatment systems, where they enhance biodegradation processes. Common strains include Bacillus, Pseudomonas, and Nitrosomonas species, each targeting specific pollutants. Their use aligns with sustainable practices, as they reduce reliance on chemical treatments and lower operational costs for treatment facilities.

Physical and Chemical Properties

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These bacteria are typically supplied as lyophilized powders or liquid suspensions. They are water-soluble and thrive in aerobic or anaerobic conditions, depending on the strain. Their activity is influenced by temperature (optimal range: 20-35°C), pH (6-8), and oxygen levels. Key metrics for performance include COD removal rate (commonly 70-90%) and adaptability to fluctuating pollutant loads. Shelf life varies from 6 months to 2 years, with proper storage conditions being crucial to maintain viability.

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Main Applications

COD degrading bacteria are widely used in industries with high organic wastewater output, such as food processing, breweries, textiles, and pharmaceuticals. They are also employed in municipal sewage plants to meet discharge standards. In bioremediation projects, these bacteria treat contaminated water bodies, including lakes and rivers. Their versatility extends to aquaculture, where they improve water quality by reducing organic waste buildup.

Safety and Storage

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Most strains are non-pathogenic and classified as biosafety level 1. However, gloves and masks are recommended during handling to avoid inhalation or skin contact. Storage at 4-25°C in sealed containers prevents contamination and preserves activity. Avoid exposure to disinfectants or extreme temperatures, which can deactivate the bacteria. Suppliers typically provide strain-specific safety data sheets (SDS) for reference.

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B2B Procurement Guide

When procuring COD degrading bacteria, prioritize suppliers with proven strain efficacy and certifications (e.g., ISO 9001). Request lab test reports verifying COD removal rates under conditions matching your wastewater profile. Bulk purchases (e.g., >100 kg) often qualify for discounts. Consider logistics: liquid formulations may require temperature-controlled transport, while powders have lower shipping costs. Pilot testing is advised to confirm performance before large-scale deployment.

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