Feb 18, 2016 · The main objectives of this study were to investigate the compostability of wastewater treatment sludge (WTS) containing different bulking agents (BAs) and to determine the most efficient BA. Four different compost trials consisting of mixtures of wheat straw (WS), plane leaf (PL), corncob (CC) and sunflower stalk (SS) with WTS were performed
Jun 9, 2023 · Sludge treatment describes the process used to manage and dispose sludge produced during sewage treatment. In this context, sludge is referring to residual, semi-solid material left from industrial/municipal wastewater. Meanwhile, sewage treatment refers to the process of removing contaminants from wastewater.
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).
2.1 Objectives and scope. To compare the carbon emissions of two sludge composting technologies, this study took 1 ton of excess sludge (80% water content) from a wastewater treatment plant as the research object. The two sludge composting technologies investigated were aerobic composting and vermicomposting.
Apr 19, 2019 · 2. The global production of sewage sludge and the main directions of its management. At the European scale, the 91/271/ECC urban wastewater treatment directive adopted in May 1991 imposed the collection and treatment of wastewater in agglomerations with a population equivalent (PE) of more than 2000.
Aug 30, 2023 · Sewage sludge composting is a common practice that needs bulking agents due to the high moisture, small particle size and pasty texture of sludge. These bulking agents decrease moisture content, allow adequate gas exchange and prevent excessive compac-tion [17]. Many authors have studied the composting process on different sewage sludge
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
Apr 25, 2020 · A ratio of 3∶1 (wet basis) resulted in an increase of composting temperature in two days from 13°C up to 67°C and maintained high temperatures of more than 55°C over some time. In addition
Oct 25, 2023 · The total amount of sewage sludge generated globally is approximately 8.16 million tonnes per day. The average energy content of sewage sludge ranges from 9 to 23 MJ/kg based on the organic content (Cao & Pawłowski, 2012), which is roughly equivalent to 2.52–6.44 kWh of electricity per kilogramme. Thus, a single tonne of sewage sludge can
Jan 14, 2013 · Sludge, the kind that ends up in a number of brands of commercial and municipal compost, the kind spread on farm crops, is the end product of sewage treatment, the process by which everything flushed, poured and dumped into the sewage system by home dwellers, businesses and industry is separated into liquid and solid components.
Jul 24, 2020 · The objective of the study was to characterise co-composting dynamics and maturity of the end products of sewage sludge/ green waste mixtures. We analysed all initial substrates and co-composts, sampled at different composting times for studying (1) physicochemical parameters and (2) organic matter biodegradation and biotransformation using pyrolysis coupled to gas chromatography and mass
Therefore, industrial-scale sewage sludge composting was shown to be an effective tool for the elimination of indicator strains of fecal contamination resistant to certain antibiotics in routine use. Thus, it contributed to the reduction of the spread of ARGs in environmental microbiomes, as well as the transfer of the same in the food chain.
Nov 1, 2020 · Similarly, sludge composting has been used in 25 out of 27 countries in Europe, which accounted for as much as 42% of total sludge production in 1995 (3 million Mg of dry matter in suspend solids), and it quickly increased to 59% in 2010 (Collivignarelli et al., 2019), finally being used for agricultural utilization.
Jan 1, 2022 · Deeksha Krishna, Hirdesh Kumar Sachan & Hanuman Singh Jatav. 696 Accesses. 3 Citations. Abstract. 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.
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
