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Medientyp:
E-Artikel
Titel:
Digestion Performance of Various Combinations of Thermophilic and Mesophilic Sludge Digestion Systems
Beteiligte:
Kim, Jongmin;
Novak, John T.
Erschienen:
Water Environment Federation, 2011
Erschienen in:Water Environment Research
Sprache:
Englisch
ISSN:
1554-7531;
1061-4303
Entstehung:
Anmerkungen:
Beschreibung:
<p>Various combinations of single- and multi-stage anaerobic and aerobic–anaerobic digestion systems were studied to evaluate their solids reduction potential with capabilities to control sulfur-based biosolids odor compounds. All the multi-stage digestion systems removed more volatile solids than the single-stage anaerobic digestion systems, even at the same overall retention time. However, digestion systems with mesophilic digestion as the final stage showed a much lower headspace organic sulfur content in the dewatered biosolids than the systems with thermophilic digestion as the final stage. This observation leads to the conclusion that placing a mesophilic anaerobic digestion system at the end of multi-stage digestion systems will enable greater sulfur-based odor reduction from dewatered biosolids with greater solid reduction than single-stage mesophilic or thermophilic digestion systems.</p>