Toxic Effects of Xenobiotic Compounds on the Microbial Community of Activated Sludge

Abstract The presence of xenobiotic compounds in biological wastewater treatment processes with activated sludge may reduce microbial communities, disrupt diversity, and diminish system performance. Shock loads unusual operating events these systems have negative impacts on their efficiency reliability for pollutant degradation, thereby posing high risk to microorganisms water quality receiving treated bodies. severity characteristics the occurring damage are determined by toxic contaminant's degree, nature mode application. This review highlights effects metabolic uncouplers, heavy metals, carbon nanotubes, pharmaceuticals personal care products, nanoparticles, phenolic stress biomass systems. synergistic, antagonistic, shock load hybrid substances exposure an sequential batch reactor (SBR) organic nutrient removal, efficiency, toxicants biodegradation discussed. findings can be used provide a theoretical foundation professional assistance optimizing systems, which will help efficiency.