Alfa Laval NX-314 Decanter Centrifuge. A sludge dewatering or sludge thickening centrifuge is a decanter-type horizontal de-sludger that can remove water from slurries to thicken the sludge. In other words, a heavy-duty industrial centrifuge dewaters and concentrates (thickens) the sludge, also known as a sludge thickening machine.
Oct 19, 2023 · Here we review applications of hyperthermophiles in composting , focusing on the unique improvements provided by hyperthermophiles in composing temperatures, product safety, nitrogen preservation and humification. Inoculation of hyperthermophiles allows temperature of composting to reach over 80°C.
Aug 1, 2020 · For example, the daily wastewater treatment capacity in China has increased rapidly since 2008, and accordingly the sewage sludge production had an average annual growth of 10.7% and rose to 11.75 million ton dry matter (DM) in 2019 (MoHURD, 2020); The United States has an average annual sewage sludge production of 17.8 million ton DM in the
Aug 17, 2021 · In this study, a comparative analysis is carried out of the compost produced from industrial composting facilities that process municipal solid waste (MSW) and sewage sludge (SS) and compare them with those produced from green waste (VR).
Nov 1, 2022 · For example, in an alkaline solution, the amide group in non-ionic polyacrylamide will hydrolyze to generate anionic polyacrylamide. Polyacrylamide is widely used in the conditioning of sewage sludge. Due to the negative charge on the surface of sewage sludge particles, cationic PAM frequently achieves a more favorable conditioning effect.
Dec 24, 2021 · Therefore, industrial composting of sewage sludge results in a bio-safe final product suitable for use in a variety of applications. Keywords: antibiotic resistance; biosolids; clostridia; compost; enterobacteria; fecal contamination; fecal enterococci; metagenomics.
Apr 7, 2022 · Sewage sludge, a common by-product of wastewater treatment plants, is one important repository of antibiotic resistance genes (ARGs). The growing demands of sewage sludge reclamation, such as land application, increase the possibility of introducing ARGs into the environment and even the further dissemination of antibiotic resistance. Previous studies have paid much attention to the removal
Composting is an efficient way to convert organic waste into fertilizers. However, waste materials often contain large amounts of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs) that can reduce the efficacy of antibiotic treatments when transmitted to humans. Because conventional composting often fails to remove these compounds, we evaluated if hyperthermophilic
Apr 1, 2020 · Cui et al. (2020) investigated the effects of the atmospheric environment of composting plants on ARG abundance during sewage sludge composting using smTC and conventional thermophilic composting
Aug 17, 2021 · Municipal solid waste and sewage sludge are produced in large quantities that are often managed through industrial composting treatment. Because of their origin, composition, and complexity
Many authors have studied the composting process on different sewage sludge scales with distinct materials [18–21], and the composting process of rice straw with other waste types [22–24].
Mentioning: 2 - Wastewater treatment generates a huge amount of sewage sludge, which is a source of environmental pollution. Among the alternatives for the management of this waste, industrial composting stands out as one of the most relevant. The objective of this study was to analyze the bacterial population linked to this process and to determine its effectiveness for the reduction, and
Jun 24, 2022 · Moreover, four bio-enhanced degradation scenarios of FQs were set up according to the different temperatures and carbon-nitrogen ratio (C/N) in the sewage sludge composting stage, and the molecular dynamic (MD) simulation assisted by protein-protein docking was used to screen the external environmental factors that promote the degradation of
Composting is considered an effective treatment option to eliminate or substantially reduce potential hazards relating to the recycling of sewage sludge (SS) on land. The variation of four major types of hazards (heavy metals, instability, pathogenic potential and antibiotic resistance) was studied during laboratory-scale composting of two
The results of plant-scale hyperthermophilic composting of municipal sludge with green waste showed that the residual concentrations of polyaromatic hydrocarbons, phthalates, polybrominated diphenyl ethers were <5 mg/kg and decreased over time, with the removal percentages from 12.1% to 51.2% during seven days of composting.
