Application of Ozone on Activated Sludge: Micropollutant Removal and Sludge Quality

Characterization and fate of EfOM during ozonation applied for effective abatement of recalcitrant micropollutants

“…3). Therefore, and in agreement with literature [44,45], it is possible that part of this non-dissolved material could be solubilized upon oxidation. For the CAS effluents tested in the present study, this phenomenon was observed after consumption of relatively high ozone doses (i.e., 0.7-1.0 mM), rather than at low TOD values.…”

Selected Micropollutants Removal from Municipal Wastewater

“…However, the disposal of contaminated sludge poses a new environmental problem, especially if the pollutants are reversibly bound. One of the current trends in sludge management is the research of integrated biological and chemical processes in order to minimize the production of excess sludge and to perform simultaneous transformation/degradation of micropollutants sorbed on activated sludge [103].…”

“…The fate of MPs in municipal wastewater treatment plants (WWTPs) is strongly dependent on adsorption to solid particles in primary and secondary sludge and dissolved organic carbon (DOC) [103]. Adsorption, coagulation-flocculation and biodegradation are the basic removal processes.…”

Residuos de clorpromazina, indometacina, celecoxib, alprazolam y oxicanes en agua de río según ensayos de laboratorio: persistencia, productos de degradación y adsorción a sedimento. Método de análisis

“…A título de ejemplo, con dosis moderadas de ozono se ha conseguido eliminar compuestos como diclofenaco, indometacina, carbamazepina, atenolol, metopropol y propanolol, cuya eliminación era menor del 20 % con tratamiento biológico [47]. Diferentes artículos de revisión sobre sus posibilidades, condiciones de operación, capacidad de eliminar materia orgánica y microcontaminantes orgánicos, cinéticas de reacción y otros aspectos han sido publicados [72][73][74][75][76][77][78].…”