Abstract
The main problem associated with the treatment of high strength materials in an Anaerobic Baffled Reactor (ABR) is difficult breakdown of fat, protein and hydrocarbon molecules at early stage of anaerobic decomposition due to uncertain selection of HydraulicRetention Time (HRT) and therefore organic loading rate (OLR). Thus, in this study a modified four-compartment ABR with a working volume of 50 L was designed to determine the treatment efficiency and methane production rate of high strength wastewater. The first compartment in the ABR was doubled in size to provide longer solid retention time. Based on C/N ratio of 30, a mixture of 62% kitchen waste and 38% sewage sludge was used as substrate and fed to the reactor continuously. Initially the characteristics of kitchen waste were measured and the amounts of fat, protein cellulose, hemicellulose and lignin were found in proper level for anaerobic decomposition. Next the effects of different HRT and OLR were evaluated in the reactor. COD reduction and biogas production were investigated at different HRT (5, 4, 3 and 2 days) and OLR (2, 3, 4, 5 and 6 kg/m3d). Results show that the highest COD removals (74.5 and 75.4%) were observed at 3 days HRT and OLR of 2 kg/m-3day, respectively. While the best production of biogas (7.40 and 9.10 L day-1) was observed at 5 days HRT and OLR of 6 kg/m3 day, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 1449-1452 |
| Number of pages | 4 |
| Journal | Journal of Applied Sciences |
| Volume | 11 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2011 |
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Keywords
- High strength wastewater treatment
- Hydraulic retention time
- Organic loading rate
ASJC Scopus subject areas
- General
Cite this
Study on performance of a modified anaerobic baffled reactor to treat high strength wastewater. / Malakahmad, A.; Ahmad Basri, Noor Ezlin; Md Zain, Shahrom.
In: Journal of Applied Sciences, Vol. 11, No. 7, 2011, p. 1449-1452.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study on performance of a modified anaerobic baffled reactor to treat high strength wastewater
AU - Malakahmad, A.
AU - Ahmad Basri, Noor Ezlin
AU - Md Zain, Shahrom
PY - 2011
Y1 - 2011
N2 - The main problem associated with the treatment of high strength materials in an Anaerobic Baffled Reactor (ABR) is difficult breakdown of fat, protein and hydrocarbon molecules at early stage of anaerobic decomposition due to uncertain selection of HydraulicRetention Time (HRT) and therefore organic loading rate (OLR). Thus, in this study a modified four-compartment ABR with a working volume of 50 L was designed to determine the treatment efficiency and methane production rate of high strength wastewater. The first compartment in the ABR was doubled in size to provide longer solid retention time. Based on C/N ratio of 30, a mixture of 62% kitchen waste and 38% sewage sludge was used as substrate and fed to the reactor continuously. Initially the characteristics of kitchen waste were measured and the amounts of fat, protein cellulose, hemicellulose and lignin were found in proper level for anaerobic decomposition. Next the effects of different HRT and OLR were evaluated in the reactor. COD reduction and biogas production were investigated at different HRT (5, 4, 3 and 2 days) and OLR (2, 3, 4, 5 and 6 kg/m3d). Results show that the highest COD removals (74.5 and 75.4%) were observed at 3 days HRT and OLR of 2 kg/m-3day, respectively. While the best production of biogas (7.40 and 9.10 L day-1) was observed at 5 days HRT and OLR of 6 kg/m3 day, respectively.
AB - The main problem associated with the treatment of high strength materials in an Anaerobic Baffled Reactor (ABR) is difficult breakdown of fat, protein and hydrocarbon molecules at early stage of anaerobic decomposition due to uncertain selection of HydraulicRetention Time (HRT) and therefore organic loading rate (OLR). Thus, in this study a modified four-compartment ABR with a working volume of 50 L was designed to determine the treatment efficiency and methane production rate of high strength wastewater. The first compartment in the ABR was doubled in size to provide longer solid retention time. Based on C/N ratio of 30, a mixture of 62% kitchen waste and 38% sewage sludge was used as substrate and fed to the reactor continuously. Initially the characteristics of kitchen waste were measured and the amounts of fat, protein cellulose, hemicellulose and lignin were found in proper level for anaerobic decomposition. Next the effects of different HRT and OLR were evaluated in the reactor. COD reduction and biogas production were investigated at different HRT (5, 4, 3 and 2 days) and OLR (2, 3, 4, 5 and 6 kg/m3d). Results show that the highest COD removals (74.5 and 75.4%) were observed at 3 days HRT and OLR of 2 kg/m-3day, respectively. While the best production of biogas (7.40 and 9.10 L day-1) was observed at 5 days HRT and OLR of 6 kg/m3 day, respectively.
KW - High strength wastewater treatment
KW - Hydraulic retention time
KW - Organic loading rate
UR - http://www.scopus.com/inward/record.url?scp=79953305892&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79953305892&partnerID=8YFLogxK
U2 - 10.3923/jas.2011.1449.1452
DO - 10.3923/jas.2011.1449.1452
M3 - Article
AN - SCOPUS:79953305892
VL - 11
SP - 1449
EP - 1452
JO - Journal of Applied Sciences
JF - Journal of Applied Sciences
SN - 1812-5654
IS - 7
ER -