Abstract
The treatment (disintegration) of biogas substrates and fermentation media is carried out aiming in process optimization and thus increasing efficiency. Newly developed disintegration procedures are often tested on a laboratory scale or in single-line pilot plants to prove their effectiveness in a first test phase. Due to the constantly changing properties of biogas substrates, especially in the case of solid substrates, a parallel fermentation of treated and untreated substrate is recommended. In this way it is possible to assess the effectiveness of the newly developed disintegration method, even if the substrate quality changes over time. We present a concept in which two identically structured digester lines, each with a 200 L digester (D) and a second step digester (SD, 100 L), are operated in parallel in a pilot plant. The treatment takes place in one digester line (DD, SDD; D = disintegration) while in the second digester line (DB, SDB; B = blind, flow through) the substrate flows through a chamber of the same geometry but without treatment facilities.
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