Mar 10, 2024 · Large-scale composting tests were conducted in two different locations (hereafter marked as A and B) in the Czech Republic. Composting mixtures composed of sewage sludge from municipal wastewater treatment plants, finely crushed tree barks, urban greenery waste, soil, and amounts of ash from power production plants or digestate from an agricultural biogas plant at varying proportions.
1 Introduction. Sewage sludge is a byproduct of wastewater treatment and is produced worldwide. In the literature, municipal sewage sludge is defined as sewage sludge from the municipal wastewater treatment process. Due to huge sewage sludge production all around the world, this organic waste must be managed properly.
Dec 24, 2021 · Therefore, industrial composting of sewage sludge results in a bio-safe final product suitable for use in a variety of applications. | Boxplot of biodiversity indexes (Chao 1 and Shannon).
Jan 14, 2021 · In present study, the effects of carbon sources on compost process and quality were evaluated in the lab-scale sewage sludge (SS) composting. The composting experiments were performed for
Apr 3, 2008 · The increased rate of sewage sludge production in developing countries like China is a matter of great concern whenever the aspect of final disposal is considered. Currently more than 600 wastewater treatment plants (WWTPs) have been established countrywide, and at least more than 15 million tons (78% water content) of municipal sewage sludge
Jul 15, 2021 · The utilization of nutrients in sewage sludge partly alleviates the economic and environmental constraints, and the composting process has been proved a cost-efficient and simple approach for the recycling of sewage sludge. During the bio-oxidative process, the thermophilic phase is considered to be the most effective stage for the biodegradation of organic matter in sewage sludge composting
Dec 15, 2023 · Composting is the controlled, aerobic (oxygen-required) biological decomposition of organic materials by microorganisms. Organic (carbon-based) materials include grass clippings, leaves, yard and tree trimmings, food scraps, crop residues, animal manure and biosolids. Compost is a dark, crumbly, earthy-smelling, biologically-stable soil
Temperature plays a crucial role in industrial composting, as it influences the activity of microorganisms and the rate of decomposition. Composting piles or vessels are monitored closely to ensure that temperatures remain within the optimal range for microbial activity (usually between 120°F to 160°F or 49°C to 71°C).
Sep 1, 2022 · Improvement of sewage sludge composting derived from large municipal and industrial wastewater treatment plants is another key research to be further investigated. Modified pine wood as bulking agent has promising results on this bio-waste flow (Liu et al., 2021a).
Jan 1, 2023 · The treatment and disposal of sewage sludges is an issue of high concern, given the role of sewage sludge in environmental pollution, risks to human health and high cost of its disposal. Under current legislation, sludge can be disposed of in agriculture after a stabilization process, such as composting. As a result of this process, organic
Jul 1, 2017 · Anaerobic digestion, thermal treatments and composting are the most widely used processes among the available management set out in the Working Document on Sludge and Biowaste (2010), which is a proposal to revise Spanish Order AAA/1072/2013 on the agricultural use of sewage sludge and sewage sludge management.
Sep 20, 2022 · Background: Open Access Feature Paper Article. Environmental and Economic Performance of Sludge Composting Optimization Alternatives: A Case Study for Thermally Hydrolyzed Anaerobically Digested Sludge. by. Irina Kliopova. *, Edgaras Stunžėnas. *, Jolita Kruopienė. and. Rimas Pranas Budrys.
Dec 4, 2023 · One of the most widely used for sludge treatment. Sludge is held in the absence of air for 15 to 60 days at temperatures of 68 to 131°F. Anaerobic bacteria feed on the sludge, producing methane and carbon dioxide. In some treatment plants, the methane is collected and burned to maintain the treatment temperature.
According to the results of the present study, the industrial composting of sewage sludge managed to generate a final product that complies with the hygienic–sanitary quality required by current legislation.
Apr 20, 2024 · Composting is a biological aerobic technology of sewage sludge that transfers organic matter into nutrient-rich products comprising decomposing organic matter, such as humic acid-like groups (El Hayany et al., 2022). MP reduction might occur during sludge composting due to its high temperature, high humidity, and active microbial metabolism.