May 1, 2020 · To address this issue, a centre-oriented real-time temperature compensation strategy was designed in this study. Five 9 L reactors (R1-R5) with different insulation strategies were used for the co-composting of dewatered sludge and Phragmites australis and compared. The process performance was assessed by monitoring the temperature, O 2 and CO
Mar 1, 2019 · To our knowledge, this is the first study where the effect of the composting residence time over the emission factors of NH 3 and tVOCs is evaluated, providing the emission factors for a full-scale sewage sludge composting plant and allowing a comparison among similar treatment processes with different input wastes (raw sludge, municipal solid
Oxygen is an important parameter for organic-waste composting, and continuous control of the oxygen in a composting pile may be beneficial. The oxygen consumption rate can be used to measure the degree of biological oxidation and decomposition of organic matter. However, without having a real-time online device to monitor oxygen levels in the composting pile, the adjustment and optimization of
The co-composting of sewage sludge, green waste, and food waste even at a low C/N ratio of 8.75, 18.00, and 24.90 resulted in high-quality composts. The research results can contribute to the
Feb 2, 2018 · The objective of this study was to examine the feasibility of sewage sludge composting using a simple aeration method. Two consecutive composting trials (run A and run B) using Japanese sludge and woodchips (1:1, v/v) were conducted in cubic boxes (0.45 × 0.45 × 0.45 m3) made by plywood at Okayama University. Air was forced up through small holes perforated on two open-ended parallel PVC
May 5, 2015 · Introduction. Composted organic waste from households, businesses, yards and parks, food processing and agricultural waste, as well as sewage sludge from municipal sewage treatment plants contains a host of valuable plant nutrients. Rich in nitrogen, phosphorous, potassium and trace elements such as copper and zinc, such compost is used as an
Oct 1, 2001 · DOI: 10.1016/S0921-3449(01)00087-8 Corpus ID: 110283350; A cost analysis of sewage sludge composting for small and mid-scale municipal wastewater treatment plants @article{Wei2001ACA, title={A cost analysis of sewage sludge composting for small and mid-scale municipal wastewater treatment plants}, author={Yuansong Wei and Yao-bo Fan and Min-Jian Wang}, journal={Resources Conservation and
Feb 7, 2024 · From waste to resource: New sustainable process transforms sewage sludge into activated carbon. Credit: Journal of Environmental Management (2023). DOI: 10.1016/j.jenvman.2023.119822. Sewage sludge is the solid waste resulting from wastewater treatment. According to data from the Ministry for the Ecological Transition and the Demographic
Aug 30, 2023 · Abstract. Composting is an interesting option to recycle big quantities of organic waste because it helps to mitigate different environmental problems. Complementary characteristics of rice straw (RS) and sewage sludge (SS) create a suitable mixture to be used in a composting process.
Aug 17, 2021 · In this study, the operations of six industrial composting facilities that process municipal solid waste and sewage sludge were evaluated from the point of view of the sanitation achieved and the
Jan 1, 2022 · Sewage sludge management is critical for reducing environmental pollution and its negative impacts on human health. Waste and wastewater are generally generated in large quantities in cities. Origin, collection process, and treatment all influence the quality of these sewage sludge wastes.
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 mixtures of sludge and green waste (1:1 and 1:2 v/v
Oct 27, 2015 · In order to use sewage sludge (SS) composts in agriculture, it is extremely important to estimate the quality of compost products. The aim of this study was to investigate the quality of composted SS as a fertilizer and soil amendment especially in semi-arid areas. To determine the quality and agronomic value of the SS compost products, analyses on pH, electrical conductivity, organic matter
Dec 24, 2021 · PMCID: PMC8739954. DOI: 10.3389/fmicb.2021.784071. Abstract. 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.
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.
