We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Risk Assessment and Regulatory Overview of Sewage Sludge
Summary
This review examines the risks associated with using sewage sludge biosolids as agricultural soil amendments, including contamination by heavy metals, pharmaceuticals, pathogens, and microplastics. Researchers summarized the concentrations of harmful substances found in biosolids and their potential effects on human health and the environment. The study provides reference standards for improving national regulations around biosolid application in agriculture.
With the increase of the global population, the acceleration of urbanization and the impact of climate change, water scarcity is becoming a serious problem. More and more attention has been paid to sewage sludge treated by wastewater treatment plants (WWTP), as potential water resources and soil amendments in agriculture. The application of biosolids can not only increase organic matter and nutrients in soil, but also contribute to the resource utilization of waste. However, the use of biosolids also poses potential environmental and health risks. This review discusses the risks of using biosolids, the harmful substances containing in biosolids, summarizes their concentrations that cause damage to our health, and provides reference standards for the subsequent improvement of national regulations.
Sign in to start a discussion.
More Papers Like This
A review on the fate and effects of contaminants in biosolids applied on land: Hazards and government regulatory policies
This review examines the contaminants, including microplastics and persistent organic pollutants, that remain in treated sewage sludge (biosolids) when it is applied to farmland as fertilizer. These pollutants can accumulate in soil and potentially enter crops and groundwater, creating exposure pathways to humans. The authors argue that current government regulations on biosolid use, particularly in the US, are outdated and need updating to address emerging contaminants like microplastics.
Land Application of Biosolids in Europe: Possibilities, Con-Straints and Future Perspectives
This review examines how sewage sludge, or biosolids, is used as agricultural fertilizer across European countries and the regulations governing this practice. While biosolids provide valuable nutrients like phosphorus, the study highlights concerns about contaminants including microplastics, pharmaceuticals, and heavy metals that could enter soil and food chains through land application.
Emerging environmental health risks associated with the land application of biosolids: a scoping review
This review examines the health and environmental risks of spreading treated sewage sludge (biosolids) on farmland, which can introduce microplastics, pharmaceuticals, and other emerging contaminants into soil and water. The authors found that current regulations do not adequately address these newer pollutants. They call for better wastewater treatment, reduced plastic and pharmaceutical use, and updated regulations to protect communities near treated farmland.
Sewage Sludge in Agricultural Lands: The Legislative Framework in EU-28
This study examines how European Union member states regulate the use of sewage sludge in agriculture, finding significant inconsistencies in permissible heavy metal limits and a near-total absence of regulations for emerging contaminants like microplastics and pharmaceuticals. The core EU directive governing sewage sludge application has not been substantially updated since 1986. The findings highlight a critical need for harmonized, modernized regulations to protect soil health and food safety across Europe.
A Quantitative Environmental Risk Assessment for Microplastics in Sewage Sludge Applied to Land
Researchers conducted a quantitative risk assessment of microplastics in sewage sludge applied to farmland and found that contamination levels frequently exceed safe thresholds for soil organisms. Even under realistic scenarios, the microplastic concentrations in sludge-amended soils were estimated to affect 15 to 18 percent of soil species. The study suggests that regulatory limits on microplastics in agricultural sludge should be urgently considered to protect soil ecosystems.