Composting is controlled fermentation that converts organic matter aerobically and produces stable humic and pre-humic compounds (figure 1). Aeration will only be effective if the medium is air-permeable. Dewatered sludge often has a low porosity; a bulking agent has to be added, usually in the form of a carbonaceous support (20% of the mixture
Jan 1, 2023 · The composting of sewage sludge is a valid method for its reuse, allowing a waste product, whose disposal is becoming difficult to manage, to be seen as a resource. This possibility of reuse is part of a “Circular Economy” vision and goes along with the new policies supported by the EU.
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
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
Oct 27, 2015 · It appears that composted SS and green/dry plant waste at 1:2 and 1:3 proportions pose no threat to soil or plant quality if used in agriculture or land restoration, and pH and electrical conductivity were within the permissible limits. 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
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
Jul 1, 2017 · Typical organic wastes used as raw materials in composting are animal manures and crop wastes [1][2][3], agro-industrial wastes [4, 5], municipal solid wastes [6,7], sewage sludge [8,9] and agri
Nov 16, 2016 · Compost with nutrient-rich organic matter can be produced from renewable biomass materials such as municipal sewage sludge, landscaping waste and others. In this study, co-composting of municipal sewage sludge and landscaping waste as a soil amendment using 10 m3 pilot scale bioreactor system was tested. The temperature, oxygen level, moisture content and pH were monitored throughout the
Nov 18, 2018 · The equipment could monitor oxygen concentration online and in real time to optimize the aeration strategy for the compost depending on the concentration indicated by the oxygen-measuring equipment.
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).
The composting process lasted for 3 months in all cases, with a bio-oxidative phase of 2 months for SS1 and SS2 and 1 month for SS3. The composting mixture consisted of sewage sludge + straw (1:1 v/v) for SS1, sewage sludge + pruning wastes (1:1 v/v) for SS2, and dried sewage sludge + pruning wastes (1:2 v/v) for SS3.
Nov 18, 2018 · The equilibrium time required to detect oxygen concentration in the composting pile was 50 s, and the response time for oxygen detection was less than 2 s. The equipment could monitor oxygen concentration online and in real time to optimize the aeration strategy for the compost depending on the concentration indicated by the oxygen-measuring
Sep 15, 2023 · As a safe and reliable sludge management measure, aerobic composting can effectively remove MPs from sewage sludge. Importantly, in the SS composting system, the degradation of MPs is achieved through the joint action of physical, chemical, biological and other environmental factors, meanwhile, the physical changes, chemical changes and
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
May 1, 2020 · A co-composting consisting of sewage sludge and Phragmites australis was used for this study. The dewatered sludge was collected after the centrifugal dewatering process, and the Phragmites australis was harvested from the constructed wetland in late May, air dried for 2 w, and shredded into pieces of approximately 2 mm.