Studies on the activated sludge process crucial parameters controlling olive mill wastewater treatment

Moussaoui, Tawfik El

doi:10.1016/j.scitotenv.2022.156455

Cited by 10 publications

(3 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Highly growth in biomass causes the drop in DO concentration thus resulted in SOUR and OUR value. Meanwhile, according to [13] SOUR and OUR is positively correlate to COD removal. The high metabolic rate of diverse bacteria consumes high oxygen in the environment.…”

Section: The Relation Of Sour and Our In Different Aeration Ratementioning

confidence: 92%

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.

View full text Add to dashboard Cite

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.

show abstract

Section: The Relation Of Sour and Our In Different Aeration Ratementioning

confidence: 92%

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.

View full text Add to dashboard Cite

show abstract

“…Treatment methods aim at eliminating as much toxic molecules as possible which are contained in these OMW through physical, chemical, and biological processes, which can be used separately or combined. Physical treatments such as activated sludge [24] nanofiltration [25], adsorption on activated carbon [26], etc. Chemical treatments such as the use of photocatalytic membranes [27], electrohydrolysis [28], and electrocoagulation [29].…”

Section: Introductionmentioning

confidence: 99%

A remarkable step in the aerobic biological treatment of Olive Mill Wastewater (OMW): A combination of selected microbial strains that enhance their decolorization and depollution

Bouigua,

Bakali,

Jaber

et al. 2024

E3S Web Conf.

View full text Add to dashboard Cite

The olive industry extracts oil from olives but also generates solid co-products called pomace and liquid wastes known as Olive Mill Wastewater (OMW). With global annual production exceeding 30 million tons and approximately 685,000 tons in Morocco alone, these wastes pose environmental challenges due to their high acidity, organic load, and phenolic compounds. Our research aims to depollute and recycle OMW using aerobic biological treatment methods. Samples were collected from various ecological sites across four Moroccan regions. We isolated and purified several strains of molds, yeasts, and bacteria capable of decolorizing OMW. Decolorization experiments revealed promising results, with a combination of seven selected molds showing significant reductions in chemical oxygen demand (COD) by 71.44%, biochemical oxygen demand (BOD5) by 69.91%, and polyphenols content by 84.22%. Encouraged by these findings, we propose further treatment using sourdoughs composed of combinations of different pure strains, including yeasts and selected bacteria such as Bacillus subtilis and Pseudomonas aeruginosa. This approach demonstrates a practical and cost-effective method for depolluting and recycling OMW, contributing to environmental protection and human health preservation. By mitigating the risks associated with untreated OMW discharge, this study offers a viable solution to the environmental challenges posed by olive processing industries globally, particularly in regions like Morocco where olive cultivation is significant.

show abstract

“…Numerous studies in the literature have explored different wastewater treatment technologies to achieve health and environmental sustainability goals. Several chemical, physical, physico‐chemical and biological methods as well as various combinations of them have been applied in wastewater treatment (Bădescu et al, 2018; Cheremisinoff, 2019; El Moussaoui, 2022; El Moussaoui et al, 2018; Henze et al, 2008; Mazhar et al, 2019; Metcalf et al, 1991; Oller et al, 2011; Patyal et al, 2020; Prasse et al, 2015; Rout et al, 2021; Tchobanoglus et al, 2003). These advanced technologies lead to efficient performance in compound removal from wastewater and can reduce or totally eliminate sanitary risks from wastewater and organic loads and nutrients.…”

Section: Introductionmentioning

confidence: 99%

Study of an eco‐efficient method for wastewater treatment and safe agricultural reuse: Effect of influent splitting rates on effluent quality parameters

Moussaoui

Belloulid

Ass

et al. 2023

Irrigation and Drainage

Self Cite

View full text Add to dashboard Cite

In this study, an eco‐efficient scheme (EES) that is both selective and environmentally viable is proposed and compared to a conventional activated sludge scheme (CAS). The results showed an optimal process operation and a significant difference (p < 0.001) in organic load and nutrient removal efficiencies between CAS and EES. Moreover, statistical analysis based on variance and principal component analysis highlighted a significant positive correlation between influent/effluent wastewater parameters, performance indicators and adopted process configuration. Thus, the average concentrations of activated sludge biomass were 3.11 ± 0.48 gTSS.L−1 and 2.51 ± 0.37 gVSS.L−1, and the volatile suspended solids (VSS) to average total suspended solids (TSS) ratio, which indicates the rate of active fraction of activated sludge biomass and the degree of mineralization, was approximately 81%± 2%, suggesting the optimal development of activated sludge biomass in the bioreactor. Furthermore, chemical oxygen demand and 5‐day biological oxygen demand removal efficiencies in CAS were 94% and 97% versus 55% and 66% in EES, respectively. Nitrogen abatement in terms of total Kjeldahl nitrogen and performed by CAS was approximately 85% and 86%, respectively, and by EES 41% and 40%, respectively. Phosphorus abatements were comparable in both CAS and EES. The effluent hygienic quality parameters after disinfection conformed to applied standards for safe reuse. For agricultural purposes and environmental and socio‐economic considerations, we must consider further ecological methods. Selecting organic matter and nutrients can also provide hygienic effluent; therefore, the eco‐efficient process constitutes a promising eco‐friendly technology.

show abstract

Studies on the activated sludge process crucial parameters controlling olive mill wastewater treatment

Cited by 10 publications

References 54 publications

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

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

A remarkable step in the aerobic biological treatment of Olive Mill Wastewater (OMW): A combination of selected microbial strains that enhance their decolorization and depollution

Study of an eco‐efficient method for wastewater treatment and safe agricultural reuse: Effect of influent splitting rates on effluent quality parameters

Contact Info

Product

Resources

About