État actuel des connaissances des procédés de bioréacteur à membrane pour le traitement et la réutilisation des eaux usées industrielles et urbaines

Seyhi, Brahima; Droguil, Patrick; Buelna, Gerardo; Blais, Jean‐François; Héran, Marc

doi:10.7202/1006478ar

Cited by 7 publications

(5 citation statements)

References 89 publications

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“…Temperature also acts as a physiological factor on the metabolism and growth of most living organisms in water, especially microscopic ones [17,24], and is therefore directly linked to the rate of degradation of organic matter [25]. The…”

Section: The Results Of Temperaturementioning

confidence: 99%

Assessment of wastewater biological treatment efficiency and mapping of WWTPs and LTPs in Algeria

Bouchaala

Charchar

Sahraoui

et al. 2021

J Environ Health Sci Engineer

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Objective In this study, we present the evaluation of wastewater biological treatment by WWTPs (wastewater treatment plants) and LTPs (lagoon-based treatment plants) in Algeria using the results of analyzes of the samples of 108 stations, this work falls within the framework of a survey carried out by the research center in biotechnology (CRBt) in collaboration with ONA (National office of sanitation), and it reflects our interest in preserving the environment, in particular aquatic ecosystems, and determining the different sources of pollution and the most effective methods to cope with and for those that are well managed. Methods The analyzes concerned various parameters of 108 stations. Temperature and pH were measured directly, in situ, using multi-parameter field probes. For the other parameters (MS, BOD 5 , COD, NO 3 , NO 2 , NH 4 , TP) the measurements were carried out in the laboratory according to standard and spectrophotometric methods. As well as through the reports of our field visits to the stations and the monitoring of purification processes. ResultsThe results obtained show us that wastewater biological treatment is effective to a certain extent, whether in a WWTPs or LTPs. We have recorded that the reduction rates of the various pollutants from wastewater, are more efficient at the outlet of WWTPs than those of LTPs, even if we noted, at WWTP level, outgoing values that do not comply with the standards for reuse and preservation of the receiving environment and higher than the Algerian standard for certain parameters. Conclusion These results indicate that any use of this treated water, especially in agriculture, must take into account their specificity and the extent of its future impact, in particular the case where values are higher than the Algerian and WHO standards.

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Section: The Results Of Temperaturementioning

confidence: 99%

Assessment of wastewater biological treatment efficiency and mapping of WWTPs and LTPs in Algeria

Bouchaala

Charchar

Sahraoui

et al. 2021

J Environ Health Sci Engineer

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“…The decrease observed at the Adétikopé Centre and Kladjémé sites is thought to be due to a combination of certain conditions that are unfavourable to them and that are more pronounced in summer: (1) The temperature of the environment has a direct effect on the survival of microorganisms because the rate of elimination of bacteria increases with temperature due to an increase in their metabolic activity [61]; (2) UV radiation can have a direct effect on the elimination of indicator germs through its photochemical action, inducing damage to the genetic material of cells and thus preventing their reproduction [62]. The levels of TC obtained in wastewater exceed the concentration limit (1000 germs/100 mL) recommended by the WHO for the reuse of this water in irrigation [63]. Streptococci are likely to contaminate water supplies and are typical of animal feces.…”

Section: Discussionmentioning

confidence: 99%

The Physico-Chemical and Bacteriological Characterization of Domestic Wastewater in Adétikopé (Togo, West Africa)

Gbekley,

Komi,

Houedakor

et al. 2023

Sustainability

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Wastewater represents a health risk for the population. For sanitary safety, it is important to know its physico-chemical and microbiological qualities in order to better understand the risks incurred by the population. The aim of this study was to analyze Adétikopé’s domestic wastewater from a microbiological and physico-chemical standpoint. Twelve wastewater samples were taken in Adétikopé from December 2022 to February 2023. Physico-chemical parameters were determined in accordance with AFNOR and the French NF standard. In microbiology, AFNOR was used as a reference for the detection of germs contaminating wastewater. Results were assessed in relation to European Union Criteria 98/83/EC. The wastewater analyzed has a pH close to neutral, with an average pH of 7.05. The pollutant load generated ranged from 32 mG/L to 201 mg/L for BOD5, from 660 mG/L to 900 mG/L for COD and from 408 mG/L to 2080 mG/L for suspended solids. The highest levels of germs were detected in the samples taken, with values of 68,000 CFU/100 mL and 47,000 CFU/100 mL for thermotolerant coliforms and fecal streptococci, respectively. The results show that fecal contamination originates from both animal and human sources. Concentrations of fecal coliforms and fecal streptococci are very high, far exceeding WHO guidelines. While a short-term solution would be to disinfect household sanitation systems on a daily basis, in the long term, the construction of collective sanitation systems, backed up by environmental education, remains a sustainable solution for the health and safety of populations.

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“…The hydraulic retention time is the time it takes for a water droplet to move from its entry into the membrane bioreactor to its exit. Seyhi et al [ 169 ] defined the HRT as the time that microorganisms have to degrade pollutants. The hydraulic retention time depends on the membrane configuration and the organic load of the effluent.…”

Section: Operating Conditionsmentioning

confidence: 99%

Critical State of the Art of Sugarcane Industry Wastewater Treatment Technologies and Perspectives for Sustainability

Nouhou Moussa,

Sawadogo,

Konate

et al. 2023

Membranes

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The worldwide pressure on water resources is aggravated by rapid industrialization, with the food industry, particularly sugar factories, being the foremost contributor. Sugarcane, a primary source of sugar production, requires vast amounts of water, over half of which is discharged as wastewater, often mixed with several byproducts. The discharge of untreated wastewater can have detrimental effects on the environment, making the treatment and reuse of effluents crucial. However, conventional treatment systems may not be adequate for sugarcane industry effluent treatment due to the high organic load and variable chemical and mineral pollution. It is essential to explore pollution-remediating technologies that can achieve a nexus (water, energy, and food) approach and contribute to sustainable development. Based on the extensive literature, membrane technologies such as the membrane bioreactor have shown promising results in treating sugarcane industry wastewater, producing treated water of higher quality, and the possibility of biogas recovery. The byproducts generated from this treatment can also be recovered and used in agriculture for food security. To date, membrane technologies have demonstrated successful results in treating industrial wastewater. This critical review aims to evaluate the performance of traditional and conventional processes in order to propose sustainable perspectives. It also serves to emphasize the need for further research on operating conditions related to membrane bioreactors for valuing sugarcane effluent, to establish it as a sustainable treatment system.

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État actuel des connaissances des procédés de bioréacteur à membrane pour le traitement et la réutilisation des eaux usées industrielles et urbaines

Cited by 7 publications

References 89 publications

Assessment of wastewater biological treatment efficiency and mapping of WWTPs and LTPs in Algeria

Assessment of wastewater biological treatment efficiency and mapping of WWTPs and LTPs in Algeria

The Physico-Chemical and Bacteriological Characterization of Domestic Wastewater in Adétikopé (Togo, West Africa)

Critical State of the Art of Sugarcane Industry Wastewater Treatment Technologies and Perspectives for Sustainability

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