Anaerobic Digestion of Thickened Sludge from Fish Production in CSTR and Hybrid Pilot Scale Digesters

Biomethane Potential of Sludges from a Brackish Water Fish Hatchery

“…BMP mean values are reported in Figure 3. The highest obtained BMP (564.2 ± 16.9 NmL CH 4 /g VS, in IS50) was comparable to the yields of 396.8-779.8 NmL CH 4 /g VS obtained in previous tests on thickened sludge from trout production in fresh water [4,5] and to the highest yield of 460 L/kg VS, reported by Lanari and Franci [32] for effluents from trout in freshwater.…”

“…BMP mean values are reported in Figure 3. The highest obtained BMP (564.2 ± 16.9 NmL CH4/g VS, in IS50) was comparable to the yields of 396.8-779.8 NmL CH4/g VS obtained in previous tests on thickened sludge from trout production in fresh water [4,5] and to the highest yield of 460 The daily production of S100 reached the maximum on Day 9 (as for IS03), but with much lower absolute values (5.0 NmL CH4/day). Moreover, it is possible to highlight a second less pronounced peak of daily methane production for all the theses, probably due to the degradation of less easily digestible compounds.…”

“…Solid removal is an essential component in RAS, but often requires large quantities of water to wash out the accumulated waste [3]. Moreover, the produced waste is very diluted and for this reason it is difficult to store or to submit to a proper treatment [4,5]. Aerobic degradability of saline industrial wastewater was successfully demonstrated by comparing biological and chemical treatments in Kiel et al (2014) [6] and by using biological sequencing batch reactors (SBRs) in Uygur (2006) [7], with particular focus on nutrient abatement.…”