Open AccessImprovement of oxygen transfer efficiency in the activated sludge process
Author(s) -
S L Eh Kan,
Muhammad Ridwan Fahmi,
K J Shum,
Abdul Haqi Ibrahim,
Che Zulzikrami Azner Abidin,
Budhi Santri Kusuma
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/476/1/012098
Subject(s) - aeration , activated sludge , wastewater , pollutant , environmental science , sewage treatment , volumetric flow rate , waste management , environmental engineering , process engineering , pulp and paper industry , chemistry , engineering , physics , organic chemistry , quantum mechanics
Sequential batch reactor (SBR) is a feasible and economically attractive alternative to continuous activated sludge process to remove pollutants (dynamics and flexibility). Most of the power consumption is consumed by the aeration system to aid the removal of contaminants. Therefore, an optimal aeration system must be proposed to ensure cost-effective and efficient treatment of wastewater. The objective of this study is to evaluate the effect of air flow rate on the oxygen transfer efficiency of the SBR reactor. Based on the results, the removal efficiency of COD and AN at an air flow rate of 7.0 LPM (5.0 mg/L) were slightly higher than the air flow rate of 5.0 LPM (4.0 mg/L). However, the improvement is not exceptional. Excessive DO level and aeration should be avoided to achieve cost-effective yet efficient removal of pollutants.