Work

Effect of hydraulic retention time and dissolved oxygen concentration on the biodegradation efficiency of phenol in an activated sludge reactor at different organic loading rates

Year: 2024

Type: article

Abstract: Phenol is an important contaminant in wastewater from processing and refining plants, its presence in ecosystems is related to the production and degradation of numerous pesticides. Their toxic action is related to their hydrophobicity, generation of organic radicals and reactive oxygen species, causing mutagenesis and carcinogenesis in humans and other living organisms. In this research, an activated sludge system was studied for the treatment of wastewater with high concentration of phenol for reuse, varying the hydraulic retention time and dissolved oxygen concentration. The results showed the best COD removal rate (55%) and phenol biodegradation (49%) during experiment IV, at a wastewater dilution rate of 25% (v/v), dissolved oxygen (DO) feed of 1.5 ppm, hydraulic retention time (HRT) of 2.81 days and organic load (Bv=7.5kgCOD/m3.d).

Source: Revista de Energía Química y Física

DOI: 10.35429/jcpe.2024.11.30.1.9

Authors: Jesús Terreros, Guadalupe Gutiérrez

Institutions: Universidad del Valle de Toluca, Universidad Tecnológica del Valle de Toluca

Language: English

Topic: Microbial bioremediation and biosurfactants

Subfield: Pollution

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: diamond

Funder: Universidad del Valle