Upflow anaerobic sludge blanket UASB

UOP FCC unit, 11 700-702 UOP/HYDRO MTO process, 18 568 UOP Olex olefin separation process, 17 724 Up-and-Down Method, 25 217 U/Pb decay schemes, 25 393-394 Updraft sintering, 26 565 Upflow anaerobic sludge blanket (UASB) in biological waste treatment, 25 902 Upgraded slag (UGS), 25 12, 33 Upland Cotton, U.S., 8 13 U-Polymer, 20 189 Upper critical solution temperature (UCST), 20 320, 322 Upper explosive limit (UEL), 22 840 Upper flammability limit, 23 115 Upper flammable limit (UFL), 22 840 Upper Freeport (MVB) coal... 

Lepisto and Rintala [87] used four different types of thermophilic (55°C) anaerobic processes, namely an upflow anaerobic sludge blanket (UASB) digester, UASB enriched with sulfate, UASB with recirculation, and fixed-bed digester with recirculation for investigating the... 

Schmidt, J.E., and Ahring, B.K. (1994) Extracellular polymers in granular sludge from different upflow anaerobic sludge blanket (UASB) reactors. Appl. Microbiol. Biotechnol. 42, 457-462. 

A third type of reactor system is the upflow anaerobic sludge blanket (UASB) reactor system. The UASB is a continuous-flow system that maintains a dense flocculated biomass that is granular. The waste-water passes through this dense sludge blanket to achieve desired treatment efficiency. The UASB, anaerobic filter, and fluidized-bed systems have all been applied successfully to treat a variety of industrial waste streams. Table 22-44 summarizes some of the applications of these treatment technologies. 

FIGURE 3.5 Processes used for FVW anaerobic treatment (A) continuously stirred tank reactor (CSTR) (B) tubular reactor (C) two-phase integrated anaerobic solid bed hydrolyser (SBH) and upflow anaerobic sludge blanket (UASB) (D) two-phase integrated anaerobic CSTR and fixed film reactor (FFR) and (E) two-phase integrated anaerobic sequencing batch reactor and FFR (Bouallagui ef ai, 2005). 

Hansen, C. L., Hwang, S. H. (1990). Use of upflow anaerobic sludge blanket (UASB) reactor to treat whey permeate. In Proceedings of the Sixth International Symposium on Agriculture and Food Processing Wastes. Am. Soc. Ag. Eng., Chicago, Vol. Ill, p. 124. 

Fig. 10.3 Upflow anaerobic sludge blanket (UASB) reactor [11].

HRT is extremely important since it affects the reaction between the microorganisms and the target compounds and influences sedimentationtime, especially in reactors like Upflow Anaerobic Sludge Blankets (UASB) (Lettinga et al., 1997 von Sperling, 2007 Lettinga, 2010). 

Chong, S., Sen, T.K., Kayaalp, A., Ang, H.M., 2012. The performance enhancements of upflow anaerobic sludge blanket (UASB) reactors for domestic sludge treatment — a state-of-the-art review. Water Research 46 (11), 3434—3470. 

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