Evaluación del efecto del peróxido de hidrógeno y estabilización alcalina con cal en el manejo de lodos reactivos e infecciosos
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Fecha
2017
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Editor
Corporación Universitaria Lasallista
Resumen
Introduction. Biological anaerobic wastewater
treatment generates by-products such as sludge,
a non-hazardous waste that requires treatment
for its disposal. Objective. In this work, the effect
of the application of hydrogen peroxide (H2O2)
and alkaline stabilization with lime (CaO) on the
reduction of sulfur and the viability of helminth eggs
were respectively evaluated. The test was applied to
the sludge from the biological anaerobic wastewater
treatment plant of a chocolate factory. Materials and
methods. A general description of the process and
of the sludge generated in this particular wastewater
treatment is given. Parameters such as pH, redox
potential (Eh), average density, sedimentation rate,
sulphide concentration and the viability of helminth
eggs were determined. The treatment was performed
by simulating the sludge dehydration process that
takes place in the plant. The different amounts of
CaO and H2O2 were supplied in accordance with
the experimental design performed in Statgraphics.
Results. Before applying the treatment, acid pH and
negative redox potential values were found, obtained
both along the Imhoff and at different depths. The
sedimentation rate found corresponded to a disperse
sludge. After the application of each treatment in the
sludge, pH results were alkaline, the redox potential
showed positive values at several points, and there
was presence of viable helminth eggs before and after
the procedure. Conclusion. The reduction of sulfur
concentration had an efficiency of 98.56 %, yielding a
non-reactive mud as a final product.
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Palabras clave
Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Peróxido de hidrógeno (H2O2), Helmintos, Aguas residuales, Sulfuros, Cal, Lodo
Citación
Revista Producción + Limpia Vol. 12 N. 2