Characterization of an acidification and equalization tank (AET) operating as a primary treatment of swine liquid effluent

Abstract

This work evaluated the potential of the acidification equalization tank (AET) used as a primary treatment unit

Use of Coffee Capsules as Support Material in Upflow Anaerobic Fixed Bed Reactors

“…However, the steadiness of the anaerobic digestion might occur in values higher than 0.30 [22,23], thereby there was no significant drop in COD removal efficiencies in the reactors. The average COD removal efficiencies in R1, R2 and R3 were similar to those reported by Mockaitis et al [30] and Fia. et al [8], who evaluated the efficiency of anaerobic reactors filled with polyurethane foam.…”

“…This demonstrates the system ability to neutralize the acids produced during the hydrolysis. Thus, the anaerobic digestion process takes place more steadily, favoring methane production and increasing the efficiency of organic matter removal, since the methanogenic archaea has an optimal growth range at pH ranging from 6.6 to 7.4 [22,30]. Spearman's test, with 5.0% significance, showed that there is no significant correlation between the COD removal and the IA/PA ratio in the first operating phase.…”

Kinetic parameters of biomass growth in a UASB reactor treating wastewater from coffee wet processing (WCWP)

“…Higher removal of phosphorus can be observed in AET (tables 7 and 8), probably due to more intense activity of the hydrolytic and acidogenic bacteria present in AET than due to the biomass of the UASB (Motteran et al, 2013). With respect to the entire system, the results can be considered good, because the average reference of phosphorus removal in secondary Rev.…”