Evaluation of a microbial enzyme complex on the rate of aerobic biodepuration of domestic wastewater

Document Type : Research Paper

Authors

1 Academic Department of Chemical Engineering, School of Chemical Engineering, Universidad Nacional del Centro del Perú, Huancayo, Perú.

2 Academic Department of Chemical Engineering, Faculty of Chemical Engineering, Universidad Nacional del Centro del Perú, Huancayo, Peru.

3 Academic Department of Forestry and Environmental Engineering, Faculty of Forestry and Environmental Sciences, National University of Central Perú, Huancayo, Perú.

Abstract

The present study evaluated the impact of the concentration of a microbial enzyme complex on the aerobic purification rate of domestic wastewater. A diverse and active microbial enzyme complex allows the efficient degradation of organic pollutants present in wastewater. In addition, environmental conditions, such as nutrient availability and optimum temperature, favor enzymatic activity and the performance of the purification process. For this purpose, aerobic depuration tests were carried out in a bioreactor considering three concentration levels of the microbial enzyme complex (1.0, 1.5 and 2.0 g/L), controlled temperature of 17 °C and dissolved oxygen concentration of 3.0 ppm. The adaptation process of the microorganisms lasted two days, with a daily decrease in the Chemical Oxygen Demand (COD) of 62.8; 71.1 and 77.9 ppm, respectively. Therefore, the removal rate increased with the concentration of the microbial enzyme complex and the treatment time had a significant effect on the speed of purification.

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Articles in Press, Accepted Manuscript
Available Online from 08 April 2024
  • Receive Date: 06 September 2023
  • Revise Date: 04 April 2024
  • Accept Date: 08 April 2024