English to Russian Law/Patents Engineering: Industrial Микробиологическая переработка отходов для получения биогаза

A sample of supernatant is dried at 60 degrees for 48 hours to determine dry matter content. The volatile solids content of the supernatant sample is determined by subtracting from the dry matter measurement the ash remaining after furnace burning at 550 °C and expressed as a mass percentage as dissolved volatile solids in %. An independent measure of dissolved volatile solids is determined by calculation based on the volatile solids content of the pellet. The wet weight fraction of the pellet is applied as a fractional estimate of undissolved solids volume proportion of total intial volume. The dry matter content of the pellet is determined by drying at 60 degrees C for 48 hours. The volatile solids content of the pellet is determined by subtracting from the dry matter measurement the ash remaining after furnace burning at 550 °C. The volatile solids content of the pellet is corrected by the estimated contribution from supernatant liquid given by (1-wet fraction pellet)x(measured supernatant volatile solid %). From the total volatile solids % measured in the original liquid samples is subtracted the (corrected volatile solids % of the pellet)x(fractional estimate of undissolved solids volume proportion of total initial volume) to give an independent estimate of dissolved volatile solids as %. The higher of the two estimates is used in order not to overestimate the percentage of dissolved volatile solids represented by bacterial metabolites.

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