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Table 2

Comparison of the three UASB reactors

ReactorsDomestication time (day)Highest OLR kg COD/(m3·d)66th–73th day COD removal efficiency (%)/deviation (%)Ability to resist loading shock
UASB-PVA 30 12 69–75/1.8 High 
UASB 47 46–69/8.6 Low 
UASB-GAC 47 61–73/4.0 Middle 
ReactorsDomestication time (day)Highest OLR kg COD/(m3·d)66th–73th day COD removal efficiency (%)/deviation (%)Ability to resist loading shock
UASB-PVA 30 12 69–75/1.8 High 
UASB 47 46–69/8.6 Low 
UASB-GAC 47 61–73/4.0 Middle 
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