Abstract
A laboratory study was conducted to determine the effects of degrees of pretreatment, types of activated carbons, dosages of activated carbons on the organic removal rates of potato processing wastewaters using the activated carbon adsorption process. Primary treated effluents, and secondary treated effluents using activated sludge and powdered activated carbon activated sludge processes were used as adsorbate in this study. Two types of activated carbon used consisted of granular activated carbon, Nuchar WV-L, and powdered activated carbon, Nuchar S-C, in dosages varied from 0.25 to 4 g per 50 ml of wastewater. Results indicated that activated sludge treatment removed 86–96% of COD from primary settled wastewaters. Activated sludge followed by activated carbon adsorption treatment removed 97% COD from primary settled wastewater with an effluent COD of 24 mg/1. Powdered activated carbon was more effective than granular activated carbon in removing COD from activated sludge treated effluents.
Resumen
Se llevó a cabo un estudio en laboratorio con el objeto de determinar los efectos de los diferentes grados de pretratamiento, tipos de carbones activados y dosificaciones de carbones activados sobre la remoción de material orgánica de las aguas residuales del procesamiento de papas determinándose asimismo, la intensidad de dicha remoción. Efluentes primarios y secundarios tratados con sedimento activado y también, sedimento activado en polvo, activado con carbón activado en polvo a manera de procedimientos, fueron sometidos a adsorción en este estudio.
Dos tipos de carbón activado usado consistieron en carbón activado granulado, Nuchar WV-L y carbón activado en polvo; Nuchar S-C varió en dosificaciones de 0.25 a 4 g. por 50 ml. de agua residual. Los resultados indicaron que el procedimiento en base a sedimento activado removió entre 86–96% del COD de aguas residuales asentadas.
El tratamiento con sedimento activado seguido por la exposición a adsorción por carbón activado, removió el 97% del COD de las aguas residuales primarias asentadas arrojando un COD efluente de 24 mg/1.
El carbón activado en polvo fue más efectivo que el carbón activado granular en la remoción COD en efluentes tratados con sedimento activado.
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Hung, YT. Treatment of potato processing wastewaters by activated carbon adsorption process. American Potato Journal 61, 9–22 (1984). https://doi.org/10.1007/BF02871290
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DOI: https://doi.org/10.1007/BF02871290