Wastewater Bioremediation: Restoring with Life

The Silent Water Crisis

According to IDEAM, more than 70% of water bodies in Colombia show some degree of contamination. Untreated industrial discharges, agricultural runoff with agrochemicals, untreated domestic wastewater: all contribute to a problem that threatens public health, biodiversity, and economic productivity.

Bioremediation offers a mature, proven, and environmentally responsible alternative to conventional physicochemical methods. Instead of containing, extracting, or neutralizing the contaminant, we use living organisms to transform it into harmless or even beneficial substances.

How Does It Work?

The process relies on microbial consortia —communities of bacteria, fungi, and yeasts selected for their metabolic capacity— that degrade specific contaminants:

• Organic matter: Aerobically and anaerobically, down to CO₂ and water.
• Ammoniacal nitrogen: Nitrification to nitrates, followed by denitrification to atmospheric nitrogen.
• Hydrocarbons and oils: Enzymatic degradation down to non-toxic fatty acids.
• Heavy metals: Bioaccumulation in biomasses that are then harvested in a controlled manner.

Stages of a Bioremediation Project

1. Site characterization: Physicochemical and microbiological sampling, identification of contamination sources.
2. Consortium design: Selection and scaling of microorganisms adapted to the contaminant and local conditions (pH, temperature, dissolved oxygen).
3. Staged application: Progressive inoculation with real-time indicator monitoring.
4. Post-treatment monitoring: Verification of ecosystem recovery and contingency plan.

Application Sectors

At BioSoluciones we work mainly with four sectors:

• Livestock and aquaculture: Stabilization lagoons, ponds, and recirculation systems.
• Industrial: Effluents from food plants, tanneries, industrial laundries, petrochemicals.
• Municipal: Support for wastewater treatment plants (WWTP) with low efficiency.
• Environmental: Restoration of rivers, wetlands, and reservoirs with cumulative deterioration.

Results that are Measured

Unlike containment solutions (which only displace the problem), bioremediation produces measurable and sustained improvements over time: BOD and COD reduction above 85%, odor elimination, recovery of aquatic flora and fauna, and compliance with current environmental regulations (Resolution 0631 of 2015 in Colombia).

Education and Accompaniment

An essential part of our work is technology transfer. It is not enough to apply the consortium: we train the local team to understand the process, make informed decisions, and sustain the results in the long term. Thus, bioremediation ceases to be an external service and becomes an installed capacity in the territory.