| Main Title |
Comparative evaluation of mesophilic and thermophilic anaerobic digestion: Phase one / |
| Author |
Kugelman, Irwin J. ;
Guida, V. G.
|
| Other Authors |
|
| CORP Author |
Lehigh Univ., Bethlehem, PA.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. |
| Publisher |
U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, |
| Year Published |
1989 |
| Report Number |
EPA/600/2-89/001A |
| Stock Number |
PB89-151393 |
| OCLC Number |
48446753 |
| Subjects |
Sewage sludge digestion ;
Autoclaves--Experiments ;
Thermal analysis
|
| Additional Subjects |
Sludge digestion ;
Sewage treatment ;
Biodeterioration ;
Temperature ;
Anaerobic conditions ;
Thermophiles ;
Methane ;
Decomposition reactions ;
Thermodynamic properties ;
Chemical analysis ;
Steady state ;
Municipalities ;
Tables(Data) ;
Waste disposal
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ESAD |
EPA 600-2-89-001a |
|
Region 10 Library/Seattle,WA |
08/09/2017 |
| NTIS |
PB89-151393 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
75 pages : illustrations ; 28 cm |
| Abstract |
A study of the operation of anaerobic systems under temperature transition was conducted as part of a larger study of mesophilic vs. thermophilic anaerobic digestion. Systems seeded with domestic sewage sludge, but subsequently fed a chemically defined complex medium, were operated at 20- and 30-day detention times at 35 C. The temperature was raised to 55 C at rates varying from 0.25 C to 2.5 C per day. As soon as the temperature exceeded 45 C methane production shut down; the units were held at 45 C until recovery occurred. Once recovery of methane production ability occurred, transition to 55 C took place with little incident. The rate of temperature rise had little effect on the total time required to obtain stable operation at 55 C; detention time had a minor effect with longer detention time yielding superior results. Studies of temperature drop and steady-state comparison between mesophilic and thermophilic operation also were conducted. |
| Notes |
Caption title. "Jan. 1989." "EPA/600/2-89/001A." Microfiche. |
