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 […]

Using ATP in Suspended Growth Wastewater Treatment Systems – What is the benefit?

By Jordan Schmidt. Suspended growth systems, such as activated sludge, are a very common form of secondary wastewater treatment. The potential to optimize and improve the operation of such treatment plants using ATP is tremendous. ATP can directly quantify active biomass, which is key to providing secondary treatment. Two of […]

La formación de espumas biológicas: una partida de «comecocos» al estilo de los 80.

Por Andrés Zornoza Zornoza. La mayoría de técnicos relacionados con la explotación de las estaciones depuradoras de aguas residuales (EDAR) desconocen realmente qué es esa masa flotante grasienta que de repente invade la superficie de los reactores biológicos y decantadores secundarios, cundiendo el pánico entre los allí presentes. Indudablemente, conocen […]