Microplastics – Application of Sewage Sludge to Agricultural Land Questioned

The abstract of a July 1, 2022 Environmental Pollution article https://doi.org/10.1016/j.envpol.2022.119198 by researchers with Wales Cardiff University and UK University of Manchester report that “… Wastewater treatment plants (WwTPs) remove microplastics (MPs) from municipal sewage flow, with the resulting bulk of MPs being concentrated within generated sewage sludge which is frequently recycled back onto agricultural land as accepted practice in many European countries … This circular process means that MPs successfully removed from WwTPs are deposited into the soil and able to return into the natural watercourse … This study quantifies the removal efficiency of MPs with size ranging between 1000 and 5000 μm in a primary settlement tank (PST) at a WwTP serving a population equivalent of 300,000 and provides MP concentrations in the generated sewage sludge … recycling raw sewage sludge onto agricultural soils should be reviewed to avoid introducing extreme MP pollution into the environment …” #MicroPlastics #PlasticWaste #SingleUsePlastic #SewageSludge @cardiffuni @OfficialUoM