Biological treatment of municipal wastewater using fixed rope media technology: Impact of aeration scheme

Shewa, Wudneh Ayele; Li-n, Sun; Gan, Christine; Bossy, Kevin; Dagnew, Martha

doi:10.1016/j.eti.2022.102387

Cited by 3 publications

(1 citation statement)

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“…The higher SOUR value indicates the high metabolic rate of the microbial activities thus promoted the high in organic decomposition within the process [19]. Besides, in flowrate of 4L/min with too much supplies of oxygen, causes the inhibition of the bacteria growth which disrupted the metabolic rate during the process [20]. This leads to the decline of SOUR value thus drop in the COD removal efficiency.…”

Section: The Efficiency Of Cod Removal On Different Aeration Ratementioning

confidence: 99%

Effect of Aeration Rate on Specific Oxygen Uptake Rate (SOUR) in Treating Chemical Oxygen Demand (COD) in Domestic Wastewater

Zubir,

Dahalan,

Kamarudin

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Specific oxygen uptake rate (SOUR) is significant parameter to determine the microbial activity and examined the effluent quality in biological wastewater treatment. Chemical oxygen demand (COD) is the major indicator in monitoring the effluent quality in relation on its removal mainly depends on the microbial activity in the activated sludge. So, this research is conducted to study the effect of aeration rate on SOUR and determined the best oxygen requirement in removing COD in domestic wastewater. The procedure was carried out by using domestic wastewater as the seed sludge in sequencing batch reactor. The reactor with working volume of 2L was operating 6 cycles in 24 hours with five phases (feeding, aeration, settle, draw and idle). The aeration time is fixed to 2.5 hours. The dissolved oxygen and COD readings were recorded with four types of aeration rate adjusted at 1L, 2L, 3L and 4L / min daily for 7 days. The result indicates that, 3L/min gives the highest SOUR which reflects that the high activity of microbial in this condition. Besides, the effluent also shows the highest COD removal efficiency on 3L/min of aeration rate. So, as a conclusion the best oxygen requirement for the microbial to carry out their activities on aeration rate of 3L/min.

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Section: The Efficiency Of Cod Removal On Different Aeration Ratementioning

confidence: 99%