STRABAG Dry digestion technology

STRABAG’s patented dry digestion technology is successfully used for more than 30 years for continuous, thermophilic or mesophilic anaerobic treatment of richly structured substrates with a high dry matter content like bio waste or MSW. The digester is equipped with agitators which are arranged transversely to the flow direction and prevent uncontrolled sedimentation or the formation of swimming layers. The overlapping arrangement of the agitators guarantees targeted local mixing of the substrate, optimum release of the gas bubbles and reliable transportation of sediments to the digester discharge. The agitator drives operate intermittently and thus with very low energy consumption.