Caracterización de biotransformación de lodos procedentes del tratamiento de aguas residuales domésticas

Abstract

The sludge produced in Domestic Wastewater Treatment Plants –PTARD-, are considered as products with a high environmental and social impact, since they are important generators of contamination to natural resources, water and soil, due to their high content of pathogenic microorganisms and heavy metals. . This generates the need to find efficient final disposal solutions that reduce these negative impacts and that provide, if possible, added value from an environmental and economic point of view. In this way, the research project proposes as an alternative for the management of residual PTARD sludge the application of a biotransformation process and subsequent constitution in biosolids through the implementation of composting techniques using beetle larvae as biocatalysts. This work carried out physicochemical and microbiological analyzes of the raw residual sludge from the Rio Frio Floridablanca and Tunja WWTPs and the product resulting from the biotransformation process using beetle larvae. The results obtained were compared with national regulations that managed to establish compliance with the chemical and microbiological variables analyzed, enabling their use as raw material in the production of fertilizers or fertilizers.