纳米材料对活性污泥法的毒性效应研究进展

Nanomaterials have been increasingly used in consumer products. Many of them finally transfer into the waste water treatment system, or landfills. The behavior and the potential toxic effect of engineering nanomaterials on the wastewater treatment process and waste sludge anaerobic digestion are valued highly. The toxic effects of nanomaterials on microbes in activated sludge mechanisms mainly include the adsorption mechanism, inducing the reactive oxygen species (ROS) and dissolving metal ions which destroy the normal metabolism of microbes and so on. Currently, researches about nanomaterials toxicity focus on the human health, while there are little researches about the toxic effect of engineering nanomaterials on the activated sludge process. In order to promote the reasonable application of nanomaterials, and effectively reduce their negative impact on the activated sludge process, it is necessary to study the toxic effects of nanomaterials on the activated sludge process.