Biosolids are solid organic matter recovered from a sewage treatment process and used as fertilizer. In the past, it was common for farmers to use animal manure to improve their soil fertility. In the
Pumpkin seedlings planted out on windrows of composted biosolids
Testing for human pathogens in cereal crops after the application of biosolids
Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge treatment is focused on reducing sludge weight and volume to reduce
Biosolids
…sufficient to contaminate soil and water when applied to land. Biosolids may be defined as organic wastewater solids that can be reused after suitable sewage sludge treatment processes leading to sludge stabilization, such as anaerobic digestion and composting. Alternatively, the definition of biosolids may be restricted by…
Sludge treatment in anaerobic digesters at a sewage treatment plant in Cottbus, Germany
Dried, anaerobically digested sludge.
A sewage sludge thickener.
Sludge treatment in the sewage treatment plant of Birsfelden, Germany.