Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Retention of Sulfate‐Reducing Bacteria in Expanded Granular‐Sludge‐Blanket Reactors
In acetate‐fed, expanded granular‐sludge‐blanket reactors with a liquid upflow velocity between 3.5 and 4.5 m/h and pH 8.0 to 8.5, calcium‐containing tap water tended to select for sulfate‐reducing bacteria, whereas demineralized tap water promoted methane production. In a formate‐fed, sulfate‐reducing, expanded granular‐sludge‐blanket reactor operated at pH 8.25 to 8.65, maximum sulfate removal rate was 9.5 g sulfur/L·d at the slowest liquid upflow velocity tested (3.0 m/h). The latter was only possible if methane‐producing bacteria were repressed by two consecutive doses of 3.85 g/L 2‐bromo‐ethane sulfonate. These laboratory‐scale experiments confirm the presumed limited capacity of sulfate‐reducing bacteria to multiply to high biomass densities in upflow reactor systems.
Retention of Sulfate‐Reducing Bacteria in Expanded Granular‐Sludge‐Blanket Reactors
In acetate‐fed, expanded granular‐sludge‐blanket reactors with a liquid upflow velocity between 3.5 and 4.5 m/h and pH 8.0 to 8.5, calcium‐containing tap water tended to select for sulfate‐reducing bacteria, whereas demineralized tap water promoted methane production. In a formate‐fed, sulfate‐reducing, expanded granular‐sludge‐blanket reactor operated at pH 8.25 to 8.65, maximum sulfate removal rate was 9.5 g sulfur/L·d at the slowest liquid upflow velocity tested (3.0 m/h). The latter was only possible if methane‐producing bacteria were repressed by two consecutive doses of 3.85 g/L 2‐bromo‐ethane sulfonate. These laboratory‐scale experiments confirm the presumed limited capacity of sulfate‐reducing bacteria to multiply to high biomass densities in upflow reactor systems.
Retention of Sulfate‐Reducing Bacteria in Expanded Granular‐Sludge‐Blanket Reactors
De Smul, Andy (Autor:in) / Verstraete, Willy (Autor:in)
Water Environment Research ; 71 ; 427-431
01.07.1999
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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