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Batch mesophilic anaerobic digestions of potato wastewaters

American Potato Journal volume 66, pages 437–447 (1989)Cite this article

Abstract

Information on the effect of types of potato wastewaters upon the performance of an anaerobic treatment system is lacking at this time. The objective of this study is to investigate the feasibility of the batch, mesophilic, anaerobic digestion process in treating potato wastewaters, and to determine the treatment efficiency for organic pollutant removal. The three types of potato wastewaters used in this study included potato juice, potato starch, and mashed potato wastewaters. After 5 weeks of treatment, the potato starch wastewaters lost more TSS (total suspended solids) than the mashed potato and potato juice wastewaters. The potato juice wastewater lost more COD (chemical oxygen demand) than the mashed potato and potato starch wastewaters. With respect to gas production, the potato juice wastewater had the highest value followed by the potato starch and mashed potato wastewaters. Over 80% of the COD can be removed by the batch, mesophilic, anaerobic digestion process. The type of potato wastewater had an important effect on the COD, TSS removal and gas production. This research proved that the batch, mesophilic, anaerobic digestion process can remove a high percentage of organic pollutants from potato wastewaters. This is a significant step in solving water pollution problems in potato industries.

Compendio

Actualmente no existe informatión sobre el efecto de diferentes tipos de aguas de deshecho de la industrializacion de la papa sobre el comportamiento de un proceso anaeróbico de tratamiento. El objetivo de este estudio es investigar la posibilidad de tratar las aguas de deshecho de la industrialización de la papa mediante el procedimiento de digestión anaeróbica del tejido mesofílico presente en las aguas de deshecho en cantidades considerables y determinar la eficiencia del tratamiento en la eliminatión de los contaminantes orgánicos. Los tres tipos de aguas de deshecho utilizados en este estudio incluyeron las procedentes de la obtención de jugo, almidón y puré de papa. Después de cinco semanas de tratamiento, las aguas de deshecho del almidón de papa perdieron más sólidos totales en suspensión (STS) que las del puré y jugo de papa. Las aguas de deshecho del jugo perdieron más demanda química de oxígeno (DQO) que las de pure y almidon. Con respecto a la producción de gas, las aguas de deshecho del jugo tuvieron el valor más alto seguidas por las del almidón y el puré. Más de 80% de la DQO puede ser eliminada por el proceso de digestion anaeróbica de las porciones mesofílicas. El tipo de aguas de deshecho tuvo un efecto importante sobre la DQO y la eliminatión de STS y la producción de gas. Esta investigación provó que el proceso de digestión anaeróbica de porciones mesofílicas puede eliminar un alto porcentaje de contaminantes orgánicos de las aguas de deshecho de la industrializatión de la papa. Este es un paso significativo en resolver el problema de contaminantes en los procesos industriales de papa.

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Authors and Affiliations

  1. Civil Engineering Department, Cleveland State University, 44115, Cleveland, Ohio

    Yung-Tse Hung

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  1. Yung-Tse Hung
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Hung, YT. Batch mesophilic anaerobic digestions of potato wastewaters. American Potato Journal 66, 437–447 (1989). https://doi.org/10.1007/BF02853189

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  • DOI: https://doi.org/10.1007/BF02853189

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