Mar 10, 2024 · Large-scale composting tests were conducted in two different locations (hereafter marked as A and B) in the Czech Republic. Composting mixtures composed of sewage sludge from municipal wastewater treatment plants, finely crushed tree barks, urban greenery waste, soil, and amounts of ash from power production plants or digestate from an agricultural biogas plant at varying proportions.
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.
Sewage sludge is the residual, semi-solid material that is produced as a by-product during sewage treatment of industrial or municipal wastewater. The term "septage" also refers to sludge from simple wastewater treatment but is connected to simple on-site sanitation systems, such as septic tanks . When fresh sewage or wastewater enters a
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
Jun 20, 2012 · In 2008, it is estimated that 57 billion tons of municipal wastewater was discharged in China, 58% of which came from municipal domestic sewage (Zhang et al. 2010), while the production of municipal wastewater and dewatered sewage in China increased approximately 5% per year on average from 1998 to 2009 as shown in Fig. 1. Sewage sludge as an
Sep 10, 2021 · The viability of co-composting of olive mill pomace added to sewage sludge with other organic residues was evaluated and the agronomic use of the final composts was investigated. Two composting piles at different carbon-nitrogen ratios were performed, in which olive mill pomace (OMP), sewage sludge from vegetable processing (SS), fresh residues from artichoke processing residues (AR), and
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
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. [ 10 ].
Some industrial and agricultural by-products (e.g. cheese whey, malt sprouts) contain growth factors such as nitrogen and carbon, which can support growth of rhizobia. Other agro-industrial wastes (e.g. plant compost, filtermud, fly-ash) can be used as a carrier for rhizobial inoculant. More recently, wastewater sludge, a worldwide recyclable
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
Jan 1, 2022 · Sewage sludge (SS) is the solid, semi-solid, or liquid residue generated during the treatment of domestic sewage in wastewater treatment plants (WWTPs), whose correct destination is one of the biggest challenges for sanitation services globally (Zhen et al. 2017; Raheem et al. 2018) since the worldwide 7.6 billion people excreta must be disposed of in some way.
