2021/9/1/ · Fresh and pre-fermented FW were evaluated in the co-digestion of sewage sludge. • Co-digestion of sludge and fermented FW resulted in 1.5 times faster pH recovery. • Co-digestion of sludge and fermented FW showed relatively stable biogas yield. • Pre-fermentation contributes for a better digester performance during its startup.
2020/1/1/ · The disposal cost of sewage sludge usually accounts for around 50% of the total operational cost in WWTPs (Appels et al., 2008).With the vast amount of the generated sludge from WWTPs, which also contains a substantial quantity of organic matter, therefore, much attention has been focused on the reuse and recycling of the valuable components
2024/1/2/ · Sewage sludge processing for hydrogen generation purposes can be also solved by mixing the problematic material with other types of biomass, industrial waste and fuels, such as textile sludge [20], industrial wastewater sludge with low fixed-carbon content [14], torrefied biomass [21] or coal, microalga and sawdust [22].
2023/12/4/ · Several processes are used: air drying on sand beds. centrifugation. belt pressing (filtration) Increases solids content to 15 to 30%. Air drying reduces pathogens. Centrifugation and filtration result in some loss of nutrients. Anaerobic digestion. One of the most widely used for sludge treatment.
Furthermore, dried sewage sludge is a much sought-after energy source with a positive CO 2 balance. Sewage sludge drying reduces transport and disposal costs and contributes therefore to sustainable resource preservation. Dried sewage sludge is an energy carrier of the future. Our experience for your benefit. HUBER sewage sludge drying systems.
2024/2/7/ · From waste to resource: New sustainable process transforms sewage sludge into activated carbon. by University of Córdoba. Sewage sludge is the solid waste resulting from wastewater treatment. According to data from the Ministry for the Ecological Transition and the Demographic Challenge, 1.2 million tons of this waste were produced
2019/7/26/ · More data about co-fermentation of sewage sludge and other materials can be found in previous study [48]. Table 3. Examples for hydrogen production through dark-fermentation from He et al. [16] proposed that a higher industrial application value for the hydrogen production from SCWG can be shown when the sludge with a solid
2023/1/1/ · Fermentation of sewage sludge to generate volatile fatty acids is reported to be more profitable than biogas production due to the higher economic value of VFA
2022/7/1/ · The maximum fermentation yield was 0.48 gCOD VFA /gVS, in tests conducted with sludge and food waste at 50% v/v each. In this past study, the thermal hydrolysis was only applied to the sewage sludge; it is expected to have comparable observations with all the cited studies (including this work) if such pre-treatment is applied
2024/3/12/ · Furthermore, in terms of the disintegration degree of sewage sludge, it increased by more than 18% with the combined pretreatment compared to the pretreatment of sole initial pH 10. Waste-activated sludge (WAS) from A2/O and Bardenpho processes were more biodegradable, explained by the 1.47- and 1.35-times higher disintegration
2021/4/19/ · Industrial wastewater sludge (IS) has similar physical and chemical characteristics with sewage sludge, except for fixed carbon and volatile matter contents. It implied that these two kinds of sludge are mixed in an appropriate proportion, it could enhance volatile matter thermal reaction and syngas production resulting in the synergic
This work studied the effect of total solid (TS) of sewage sludge on VFA production and composition in anaerobic fermentation. Results revealed that VFA concentration reached the highest of 10.16 g/L and the ratio of acetic acid, propionic acid and n-butyric acid was 5:2:2 with the 8% TS sewage sludge.
This is due to the need for a higher degree of sludge thickening (6% instead of 4.8%). The fermentation process itself is assisted by ultrasound. The fermented sludge is dewatered using centrifuges. Biogas produced in the sludge fermentation processes is produced with an efficiency of 40.5% and used for the production of electricity and heat.
2023/6/1/ · 350 ton/day of sewage sludge and 105 ton/day of food waste (Chiu and Lo, 2018) Sewage sludge and food waste were respectively anaerobic digestion before landfill-2.39 × 10 4 kg: Respectively anaerobic digestion: Sewage Sludge co-digestion with food waste before incineration and landfill-3.78 × 10 4 kg: Biogas utilized by CHP-6.75 × 10 4 kg
BRS industrial-scale fermenters and bioreactors are designed for pilot and industrial processes and industrial upscaling. We propose stand-alone units as well as fully equipped lines for biotech and pharmaceutical plants. Fermentation site is made up with fermentors from 10 dm3 to 5000 m3, 15 m3 total cubature. Read more. View All Projects ...