The present work was a comparative study of four types of biodigesters systems upflow anaerobic sludge blanket (UASB) operating with brewery effluent in hot climate region. In case a UASB IC 20 meters high and 660 m3 in volume in steel protected by epoxy resin. a conventional UASB 6 feet tall with a volume of 965 m3 protected concrete with high density polyethylene (HDPE) film. a conv... https://midwaysportes.shop/product-category/footballs/