Apr 20, 2022 · Disposal of sewage sludge, which is a by-product of wastewater treatment, has become one of the greatest challenges of the twenty-first century. Conversion of sewage sludge to a soil amendment can be performed by a broad spectrum of , which greatly differ by substrate/amendment composition, treatment time, and physicochemical conditions. The book chapter is focused on (i) environmental
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 quality of the compost produced.
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.
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
Jan 14, 2013 · After all, something has to be done with all that waste. And compost, as we all know, is a wonderful addition to our gardens. But disguising toxins and pathogen-rich sewage sludge as compost is at once deceitful and bordering on criminal. Spreading sewage sludge on our lands is postponing and at worst, redirecting a serious contamination problem.
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.
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
May 8, 2020 · Composting is a type of aerobic digestion. Sewage sludge can be combined with other waste materials such as wood chip, straw or green wastes prior to composting to provide a pasteurised product. Around 20−30% of the volatile solids can be converted to carbon dioxide through composting. Composting employs natural mesophilic and thermophilic
Composting is widely used for recycling of urban sewage sludge to improve soil properties, which represents a potential pathway of spreading antibiotic resistant bacteria and genes to soils. However, the dynamics of antibiotic resistance genes (ARGs) and the underlying mechanisms during sewage sludge composting were not fully explored. Here, we used high-throughput quantitative PCR and 16S
Jan 1, 2012 · The dewatering of sludge is a mechanical unit operation used to reduce the moisture content of sludge for one or more of the following reasons []: (1) to reduce the transportation costs to drying and disposal sites, (2) to increase the calorific value of the sludge and thus makes it more suited for incineration, (3) to reduce leachate production at the landfill site upon landfilling, and (4
Aug 30, 2023 · Complementary characteristics of rice straw (RS) and sewage sludge (SS) create a suitable mixture to be used in a composting process. This work studies industrial-scale RS and SS composting to assess both its viability and optimization. Windrow composting was conducted during two seasons.
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.
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
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
Feb 15, 2024 · These electric food recycling machines, or electric composters, are game-changers, quickly transforming kitchen waste into something useful. For this blog, I have tested four of the best compost machines in the market so that you can make the best purchase decision. 1. Lomi Classic: Best Overall. Check Price at Amazon.