Isolation of Salmonella serotypes in wastewater and effluent: Effect of treatment and potential risk

Espigares, Elena; Bueno, Antonio; Espigares, M.; Gálvez, Ramón

doi:10.1016/j.ijheh.2005.08.006

Cited by 60 publications

(39 citation statements)

References 7 publications

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“…Two of these public parks located in Sharjah were found to contain more than 1000 Salmonella colonies/100ml. The presence of Salmonella in the reclaimed water could be due to the effect of sanitary treatment method on the survival of the different serotypes of Salmonella as reported in a previous study [10]. Results also indicated that wastewater treatment might have an impact on the Salmonella increased resistance to antibiotics [10].…”

Section: Resultsmentioning

confidence: 57%

“…The presence of Salmonella in the reclaimed water could be due to the effect of sanitary treatment method on the survival of the different serotypes of Salmonella as reported in a previous study [10]. Results also indicated that wastewater treatment might have an impact on the Salmonella increased resistance to antibiotics [10]. Table I and Table II show the bacteriological counting results for Dubai and Sharjah public parks respectively.Furthermore, Shigella species were predominantly observed in 19 out of total 30 reclaimed wastewater (63%).…”

Section: Resultsmentioning

confidence: 57%

“…On the other hand, another study has shown survival of different serotypes of Salmonella and increased resistance to antibiotics. It was suggested that conventional wastewater treatment decreases the number of pathogenic microorganisms, but does not completely eliminate them [10]. Bacteriological quality of the treated wastewater after the final stage of treatment is evaluated by the presence of total and fecal coliform bacteria.…”

Section: Introductionmentioning

confidence: 99%

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Bacteriological Quality of Reclaimed Wastewater Used for Irrigation of Public Parks in the United Arab Emirates

Amimi¹,

Khan²,

Dghaim³

2014

IJESD

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Abstract-Bacteriological quality of reclaimed wastewater used for irrigation of thirty public parks located in Dubai and Sharjah was evaluated. Bacterial contaminants (Escherichia coli, Salmonella, Shigella and Enterobacter aerogenes) were tested by membrane filtration technique using Bismuth Sulphite Agar (BSA) and Violet Red Bile Agar (VRBA) media. The results showed the presence of Salmonella, Shigella, E. coli, Entereobacter aerogenes and other unidentified bacterial species on various selective media with different occurrence rates. The most common type of bacteria observed on the BSA media were Shigella (63%), E. coli (30%), Salmonella (10%) and a large percentage of unidentified bacteria (97%). Whereas on VRBA media the most common bacteria detected were E. coli (83%), unidentified bacteria (76%) followed by Enterobacter aerogenes (70%). The overall results obtained in the present study demonstrated that only 40% of the reclaimed wastewater samples examined complied with the local and widely accepted international standards of less than 1000 fecal coliforms/100mL for unrestricted irrigation. Further studies are recommended to determine the survival rate of Salmonella and other coliform group bacteria in the soil irrigated by reclaimed wastewater. In addition, detailed research should be conducted to establish the identity of Salmonella, Shigella (up to the species and sub-species level) and other unidentified bacteria which were detected in most of the reclaimed water samples.Index Terms-Bacteriological quality, reclaimed wastewater, public parks.

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Section: Resultsmentioning

confidence: 57%

Section: Resultsmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

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Bacteriological Quality of Reclaimed Wastewater Used for Irrigation of Public Parks in the United Arab Emirates

Amimi¹,

Khan²,

Dghaim³

2014

IJESD

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“…are resistant microorganisms that are readily adapt to extreme environmental conditions and have the ability to survive under hostile environmental conditions (Espigares et al 2006;Alvarez-Ordonez et al 2011). These characteristics make them the indicator of choice for monitoring the effectiveness of biosolid pathogen reduction (US EPA 1995).…”

Section: Frequently Occurred Pathogenic Bacteria In the Treated Sewagmentioning

confidence: 99%

“…are the most prevalent bacterial pathogens of public healthcare concern that are frequently found in sewage (Dumontet et al 2001;Espigares et al 2006). Salmonella spp.…”

Section: Frequently Occurred Pathogenic Bacteria In the Treated Sewagmentioning

confidence: 99%

Removal of pathogenic bacteria from sewage-treated effluent and biosolids for agricultural purposes

et al. 2018

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The reuse of treated sewage for irrigation is considered as an important alternative water source in the new water management strategy of the countries that face a severe deficiency of water resources such as the Middle East countries. The organic material and fertilizing elements contained in biosolids are essential for maintaining soil fertility. However, both treated sewage and biosolids contain a large diversity of pathogens that would be transmitted to the environment and infect human directly or indirectly. Therefore, those pathogens should be reduced from the treated sewage and biosolids before the reuse in the agriculture. This paper reviews the considerations for reuse of treated sewage and biosolids in agriculture and further treatments used for reduction of pathogenic bacteria. The treatment methods used for the reduction of pathogens in these wastes have reviewed. It appeared that the main concern associated with the reduction of pathogenic bacteria lies in their ability to regrow in the treated sewage and biosolids. Therefore, the effective treatment method is that it has the potential to destruct pathogens cells and remove the nutrients to prevent the regrowth or recontamination from the surrounded environment. The removal of nutrients might be applicable in the sewage but not in the biosolids due to high nutrient contents. However, the reduction of health risk in the biosolids might be carried out by regulating the biosolid utilization and selecting the plant species grown in the fertilized soil with biosolids.

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Airborne Microorganisms Emitted from Wastewater Treatment Plant Treating Domestic Wastewater and Meat Processing Industry Wastes

Gotkowska-Płachta

Filipkowska

Korzeniewska

et al. 2013

CLEAN Soil Air Water

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Experiments were conducted to study the airborne microbial contamination generated by a wastewater treatment plant (WWTP). Aerosol samples were collected simultaneously, by sedimentation and impact methods, from the area and the surroundings of the WWTP. Total colony forming units (CFUs) of heterotrophic bacteria (HPC), as well as members of the Enterobacteriaceae, staphylococci, enterococci, actinomycetes, and microscopic fungi were determined. Bacterial (HPC) concentrations ranged between 10 1 and 10 4 CFU/m 3 , fungi 0 and 10 4 CFU/m 3 . Higher numbers of HPC bacteria in air samples were observed in summer, fungi in autumn. The main emission of microorganisms to atmospheric air was from the mechanical sewage treatment devices of the WWTP. The facilities of the biological sewage treatment of the plant did not generate large amounts of bioaerosols. In the air obtained from the premises of the WWTP, 25 species of the Enterobacteriaceae were isolated (Salmonella spp., Klebsiella pneumoniae, Escherichia coli). At the fence and in the surroundings only Pantoea spp. were identified. This suggests that the sewage bacteria were mainly discharged in the area of the WWTP. The presence of enteric bacteria, especially Enterobacteriaceae reflects the level of air pollution with bioaerosols from sewage and is an important factor during monitoring the quality of the air around WWTPs.

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Isolation of Salmonella serotypes in wastewater and effluent: Effect of treatment and potential risk

Cited by 60 publications

References 7 publications

Bacteriological Quality of Reclaimed Wastewater Used for Irrigation of Public Parks in the United Arab Emirates

Bacteriological Quality of Reclaimed Wastewater Used for Irrigation of Public Parks in the United Arab Emirates

Removal of pathogenic bacteria from sewage-treated effluent and biosolids for agricultural purposes

Airborne Microorganisms Emitted from Wastewater Treatment Plant Treating Domestic Wastewater and Meat Processing Industry Wastes

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