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    CULTIVO DE MICROALGAS PARA LA ELIMINICIÓN DE NUTRIENTES DE UN AGUA RESIDUAL PREVIAMENTE TRATADA ANAERÓBICAMENTE.

     

    The use of anaerobic membrane bio-reactors (AnRBM) for wastewater treatment enables organic matter to be transformed into biogas, and sludge production to be reduced. However, this system does not remove nutrients from wastewater, so effluent must be treated in order to remove nitrogen and/or phosphorus. In comparison with conventional nutrient removal systems (such as active sludge), great efforts are being made nowadays to study the technical and economic feasibility of other emerging systems, such as microalgae cultivation.

    This line of research will study an alternative to conventional nutrient removal, based on microalgae cultivation and separation by membranes (AlgMBR). The use of membranes enables high quality water to be obtained, which could be reused. In addition, microalgae cultivation not only removes nutrients from water, but also fixes atmospheric CO2, which is an environmental advantage. Microalgae can then be re-circulated through an AnBRM system to be co-digested with wastewater affluent. This algae recirculation implies a higher organic load for an anaerobic reactor, therefore, higher bio-gas production is possible. Besides, removing nutrients by microalgae cultivation and re-circulation means that sludge contains a significant amount of nitrogen and phosphorus and is, therefore, suitable for use as a fertilizer in agriculture.

    According to the foregoing, the implementation of AnMBR and AlgMBR in WWTPs involves nutrient removal and its possible recovery from wastewater, and the generation of energy in the form of biogas. One of the main objectives of this line of research is to check that the biogas produced by microalgae cultivation enables enough energy to be supplied to the different parts of the process, such as agitation, filtration and lighting.




     

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    RELATED TO THIS LINE OF RESEARCH CAN SEE:

    • THESIS AND MASTER THESIS
    • R+D PROJECTS
    • TRANSFER PROJECTS
    • PAPERS

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