Abstract

LOPEZ SANCHEZ, Idalia Jacqueline; ACEVEDO CIFUENTES, Diana Rocío  and  ORDONEZ ANTE, Carlos Andrés. Follow-up to pathogens present in biosolids used as emendation to reforest a slope. Rev. ing. univ. Medellín [online]. 2010, vol.9, n.17, pp.29-40. ISSN 1692-3324.

In order to evaluate the feasibility of biosolids use as an organic emendation for reforestation and controlling active superficial erosive processes, a part of the highway -located near to the alternative route to Caldas (Antioquia). With the purpose of preventing erosion, two types of plants Brachiaria Decumbens and kikuyu grass (Pennisetum clandestinum) were planted, using biosolids from San Fernando Water Treatment Plant, mixed with soil from the site. The behavior of some environmental risk bioindicators: total coliforms, fecal coliforms, Salmonella-Shiguella, were evaluated, in runoff waters and in the slope soil across the time. Both plant species adapted well to soil; the coverage was complete and permanent. Results show the feasibility of bio-solid as emendation. However, microbiological specifications measured during the evaluation time, showed the need for sanitizing the bio-solid before mixing it with soil, since the presence of these pathogens represents an environmental risk.

Keywords : Salmonella-Shiguella; coliforms; pathogens; bio-solids; bioengineering; emendation; reforestation.

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