Two-stage efficient wastewater treatment system for rural pig farms
A novel wastewater treatment system for rural pig farms combining constructed wetlands and microbial fuel cells to reduce ammonium levels and pollutants, enabling microalgae biomass production without dilution.
Overview
The proposed two-stage wastewater treatment system is designed specifically for rural pig farms, addressing the high levels of ammonium and pollutants found in pig wastewater. This innovative system leverages constructed wetlands and microbial fuel cells (MFC) to significantly reduce toxic ammonium concentrations and emerging pollutants like antibiotics and hormones. The treated effluent is then suitable for subsequent microalgae biomass production in a photobioreactor, without the need for dilution.
Technical specifications
Key features:
- Constructed wetlands (CW) with vertical flow efficiently reduce high concentrations of ammonium.
- Integration of a microbial fuel cell (MFC) enhances the removal of ammonium and emerging pollutants.
- The CW+MFC system uses a graphite plate anode placed in an anaerobic zone and a cathode in an aerobic zone, separated by a gravel layer.
- The system is optimized for hydraulic parameters such as inlet and outlet rates, hydraulic retention time, and pollutant load rate.
- The final effluent supports the growth of microalgae in a photobioreactor (PBR) for biomass production.
Technology readiness level
This wastewater treatment system has reached Technology Readiness Level 6, indicating that it has been demonstrated in a relevant environment. Further validation involves optimizing system parameters and characterizing the biomass produced, paving the way for commercial deployment in rural pig farming operations.
About Universidad de las Fuerzas Armadas
Universidad de las Fuerzas Armadas – ESPE is a public, military‑affiliated university serving Ecuador from a multi‑campus footprint anchored in Sangolquí near Quito, with a pragmatic, applied engineering orientation. Industry collaborates through on‑campus laboratories, maker and prototyping spaces, and structured internships that align student talent with company needs. Its location close to the Quito metropolitan industry base and national logistics routes enables rapid engagement, site access, and joint validation activities with partners. Research is supported by competitive national funding in Ecuador and international programs, alongside sponsored projects with government and enterprises. A dedicated technology transfer office facilitates IP management, licensing, and startup formation to speed adoption in the market.
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