Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anaerobic Co‐Digestion of Aircraft Deicing Fluid and Municipal Wastewater Sludge
At many airports, aircraft deicing fluid and precipitation mix, becoming aircraft deicing runoff having a 5‐day biochemical oxygen demand (BOD5) of 102 to 10 6 mg/L. Publicly owned treatment works can be used for aerobic biological treatment; however, it may be more economical to use anaerobic digesters to codigest a mixture of aircraft deicing fluid and sludge. The objectives of this investigation were to determine benefits and appropriate propylene glycol aircraft deicing fluid loadings to anaerobic codigesters. Results demonstrate aircraft deicing fluid can be successfully codigested to produce methane; supernatant BOD5 and Kjeldahl nitrogen concentration were not higher in codigesters compared to a conventional digester. Aircraft deicing fluid loadings as high as 1.6 g chemical oxygen demand (COD)/L·d were sustainable in codigesters, whereas system fed only aircraft deicing fluid with nutrients and alkalinity achieved a loading of 0.65 g COD/L·d. The sludge used increased digester alkalinity and provided nitrogen, iron, nickel, cobalt, and biomass required for methanogenesis. The deicer provides organics for increased methane production.
Anaerobic Co‐Digestion of Aircraft Deicing Fluid and Municipal Wastewater Sludge
At many airports, aircraft deicing fluid and precipitation mix, becoming aircraft deicing runoff having a 5‐day biochemical oxygen demand (BOD5) of 102 to 10 6 mg/L. Publicly owned treatment works can be used for aerobic biological treatment; however, it may be more economical to use anaerobic digesters to codigest a mixture of aircraft deicing fluid and sludge. The objectives of this investigation were to determine benefits and appropriate propylene glycol aircraft deicing fluid loadings to anaerobic codigesters. Results demonstrate aircraft deicing fluid can be successfully codigested to produce methane; supernatant BOD5 and Kjeldahl nitrogen concentration were not higher in codigesters compared to a conventional digester. Aircraft deicing fluid loadings as high as 1.6 g chemical oxygen demand (COD)/L·d were sustainable in codigesters, whereas system fed only aircraft deicing fluid with nutrients and alkalinity achieved a loading of 0.65 g COD/L·d. The sludge used increased digester alkalinity and provided nitrogen, iron, nickel, cobalt, and biomass required for methanogenesis. The deicer provides organics for increased methane production.
Anaerobic Co‐Digestion of Aircraft Deicing Fluid and Municipal Wastewater Sludge
Zitomer, D. (Autor:in) / Ferguson, N. (Autor:in) / McGrady, K. (Autor:in) / Schilling, J. (Autor:in)
Water Environment Research ; 73 ; 645-654
01.11.2001
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Biodegradation of Aircraft Deicing Fluid in an Upflow Anaerobic Sludge Blanket (UASB) Reactor
| Online Contents | 1998