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
Nov 18, 2018 · The composting process is chemically and microbiologically complex and requires an adequate aeration of the biosolid (e.g., with a turner machine) for proper maturation of the compost. Adequate
The sewage sludge composting pile was performed at industrial scale in the Biosolid Plant of “Biomasa del Guadalquivir”. This pile was located in Vegas del Genil, Granada (37.160791−3.723879) and it was built using a semipermeable film to cover the pile and a ventilator system, as previously described by Robledo-Mahón et al. . The
The co-composting system (dry weight (dw) basis) consisted of 200 g of restaurant organic residues + 200 g sewage sludge (or 100 mL sewage wastewater, or 200 g textile sludge) + 100 mL of a 10% dye solution (Reactive Red 195, or Synolon Brown, or Orange Remazol, or Yellow Synozol, or Reactive Orange 122, or Reactive Black 5).
Jan 1, 2023 · Composting was carried out in containers with only sewage sludge (100%), sewage sludge added with fly ash (20 or 30% w/w) or sawdust (30% w/w). Composting was carried out for 353 days, after which the compost was stored for further 300 days.
Jan 10, 2020 · Smuggled cigarette tobacco (SCT) and industrial sewage sludge (ISS) are important substrates in the process of microbiological degradation, due to the high level of total nitrogen in their composition, which favors the composting process (Zittel et al., 2018b). However, these residues must be combined with structuring agents (sawdust, garden
Jan 1, 2022 · Composting made from sewage sludge treatment can be used to repair and protect polluted areas and soil. Materials recovered during sewage sludge treatment are significant resources, such as recycled phosphorous, which is a scarce resource.
Dec 24, 2021 · 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 link
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.
Jul 1, 2017 · 1. Introduction. Due to the high volume of sewage sludge currently generated worldwide (8.9 million tons of dry solid matter in 2010 according to Eurostat, 2015), as well as its high concentration in heavy metals (especially cadmium), organic micropollutants and pathogens, this waste must be properly managed to prevent environmental problems and risks for human health (Hendrickx et al., 2009).
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.
Apr 6, 2024 · It is desirable to recycle sewage sludge as fertilizer for agricultural fields. The application of sludge to agricultural soils is a measure that replaces chemical fertilizers and plays an important role in improving soil’s physicochemical and biological properties. However, there are concerns that the pollutants in sewage sludge will cause negative impacts on soil health. To closely monitor
Jan 14, 2013 · While the EPA has given the use of sewage sludge its blessing some of its own scientists disagree that it’s safe. And for good reason. When you spread sludge on farmland or use a bag of compost you bought at a nursery or home-and-garden supply that’s made with sludge, you’re also spreading contaminants.
Jan 14, 2021 · 28 Citations. Metrics. 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
Thermal sludge treatment – a short cut to cost saving, heat recovery, Class A compost and biogas. Pre-heating of wastewater sludge using Alfa Laval spiral heat exchangers and tube-in-tube heat exchangers prior to dewatering can also cut costs and provide an opportunity for heat recovery. Our thermal equipment can also be used for sludge