Source:http://linkedlifedata.com/resource/pubmed/id/11443970
Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
11
|
pubmed:dateCreated |
2001-7-10
|
pubmed:abstractText |
A full-scale autothermal thermophilic aerobic treatment (ATAT) of food-processing wastewater was evaluated in this study. The wastewater was rich in oil and grease at concentrations of 1,500-2,000 mg/L. The system has been operated for more than one and a half years since the startup. Under steady state conditions, the ATAT process was capable of spontaneous reaction at temperatures of 45-55 degrees C without the addition of external heat. Treatment efficiency was as high as 95% in COD reduction at a volumetric COD loading of 4.1 kg/m3-d. A mathematical heat balance model was developed based on the theoretical considerations of heat sources and losses for the ATAT process. A computer algorithm was established to evaluate specific heat potential (Hs) of the wastewater under steady state conditions. Six months of steady-state data were used for the evaluation. The result shows that on average the wastewater had a specific heat potential (Hs) of 4,720 kcal/kg-COD removed and the biological heat contributed 41.4% of the total heat input. A net heat flux of 4,270 kcal/min and volumetric heat intensity (Hv) of 38.0 kcal/L was necessary to maintain reaction temperature at 48.2 degrees C for the ATAT process. The full-scale ATAT process showed the typical characteristics of high removal rate, low sludge yield, and poor solids settleability for thermophilic aerobic treatment reported in the literature.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:issn |
0273-1223
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
43
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
251-8
|
pubmed:dateRevised |
2008-11-21
|
pubmed:meshHeading |
pubmed-meshheading:11443970-Aerobiosis,
pubmed-meshheading:11443970-Air,
pubmed-meshheading:11443970-Algorithms,
pubmed-meshheading:11443970-Bioreactors,
pubmed-meshheading:11443970-Fats,
pubmed-meshheading:11443970-Food-Processing Industry,
pubmed-meshheading:11443970-Hot Temperature,
pubmed-meshheading:11443970-Oils,
pubmed-meshheading:11443970-Oxygen,
pubmed-meshheading:11443970-Sewage,
pubmed-meshheading:11443970-Water Purification
|
pubmed:year |
2001
|
pubmed:articleTitle |
Full-scale evaluation of heat balance for autothermal thermophilic aerobic treatment of food processing wastewater.
|
pubmed:affiliation |
Department of Environmental Management, Chaoyang University of Technology, Taichung, Taiwan 40227, Taiwan.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|