Effect of polyethylene microplastics on activated sludge process – accumulation in the sludge and influence on the process and on biomass characteristics.

According to previous research, it has been proved that wastewater treatment plants (WWTPs) can retain more than 90% of the MPs contained in wastewater. However, a significant fraction of the MPs removed in WWTPs is retained in the sludge floc and this may lead to an environmental issue since biosolids […]

Pseudonocardia filamentous bulking sludge in an industrial wastewater treatment plant as revealed by Illumina amplicon sequencing.

In this study, 16S rRNA gene amplicon sequencing was performed to identify bulking filamentous bacteria in an industrial wastewater treatment plant that threats effluents of bioethanol production process from cereal cooking. The presence of Pseudonocardia sp. was confirmed by comparing the 16SrRNA of the most abundantly amplified sequence (OTU; 12.35%) […]

Towards a cleaner wastewater treatment: Influence of folic acid addition on sludge reduction and biomass characteristics.

Reduction of sludge production is one of the most desired goals in the wastewater treatment plants operation. Alternatives like the enhancement of metabolism uncoupling or the increase of endogenous respiration by different chemicals have been reported in the bibliography. In this work, two folic acid concentrations (0.8 and 1.6 mg L−1) added […]

Comparison of bacterial communities of activated sludge and membrane biofilm of MBRs treating landfill leachates.

Introduction. In this paper, bacterial communities of the mixed liquor (ML) from two full-scale membrane bioreactors (MBRs) with external membrane configuration (side-stream MBRs), treating effluents of two organic fractions from municipal solid wastes (OFMSW) have been evaluated. Both plants consist of anaerobic digestion plus composting processes. However, in one plant […]

Detectado material genético del coronavirus SARS-CoV-2 en aguas residuales del área de Valencia antes del 24 de febrero.

Un estudio de la Universitat de València, el Consejo Superior de Investigaciones Científicas (CSIC) y la Entidad Pública de Saneamiento de Aguas de la Comunidad Valenciana ha detectado material genético del coronavirus SARS-CoV-2 en aguas residuales no depuradas del área metropolitana de Valencia antes del 24 de febrero, fecha en […]

Los pavimentos permeables favorecen la infiltración de agua de calidad en el suelo.

El estudio realizado por los investigadores del IIAMA-UPV, Carmen Hernández, Miriam Fernández, Miguel Martín e Ignacio Andrés, ha sido publicado en la revista científica «Science of the Total Environment». La investigación evalúa la influencia de distintas variables ambientales en el rendimiento hidráulico y calidad del agua de los pavimentos permeables. […]

Removal of pharmaceutical compounds commonly-found in wastewater through a hybrid biological and adsorption process.

Nowadays, alternative options to conventional wastewater treatment should be studied due to rising concerns emerged by the presence of pharmaceuticals compounds (PhCs) in the aquatic environment. In this work, a combined system including biological treatment by activated sludge plus adsorption with activated carbon is proposed to remove three selected drugs […]

Estudio de los problemas de bioensuciamiento de membranas y espumas de origen biológico en sistemas MBR de tratamiento de lixiviados.

Los biorreactores de membrana (MBR) se incluyen en las denominadas tecnologías de membrana, las cuales han experimentado un gran desarrollo en la última década. La aplicación de estas tecnologías permite la separación del licor de mezcla y el agua depurada mediante membranas (UF ó MF), obteniendo ventajas importantes frente a […]