Abstract:
:Morocco is a country known for its vulnerability of water resources because of its arid and semi-arid climate. Thus, recycled wastewater has been suggested for agricultural activities, but contamination of these wastewaters is a major concern. The current study aims to determine the occurrence of helminth eggs in urban wastewater and to evaluate the removal of these pathogens by two sewage treatment systems: activated sludge and natural lagoons. The samples of wastewater and sludge were collected from two wastewater treatment plants (WWTP) located in Marrakech and Chichaoua, Morocco. Parasitological identification, according to the Bailenger technique, showed the presence of Nematodes and Cestodes, which are pathogenic to humans and animals and are responsible for helminthiasis. The wastewater and sewage sludge samples from Marrakech carried Ascaris lumbricoïdes, Ancylostoma duodenale, Trichuris trichiura, Capillaria spp., Taenia spp. and Hymenolepis spp., while the samples from Chichaoua carried Ascaris lumbricoïdes, Ancylostoma duodenale, Trichuris trichiura and Capillaria spp. The overall removal efficiency of eggs in the treatment plants ranged from 100% in the WWTP of Marrakech using activate sludge to 94.97% in the WWTP of Chichaoua using natural lagoons. These results were discussed according to health risk and the cost-effectiveness of both wastewater treatment techniques.
journal_name
J Infect Public Healthjournal_title
Journal of infection and public healthauthors
Chaoua S,Boussaa S,Khadra A,Boumezzough Adoi
10.1016/j.jiph.2017.07.026subject
Has Abstractpub_date
2018-01-01 00:00:00pages
197-202issue
2eissn
1876-0341issn
1876-035Xpii
S1876-0341(17)30200-9journal_volume
11pub_type
杂志文章abstract::Nearly four months have passed since the emergence of the severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2), which caused the rapidly spreading Coronavirus Disease 2019 (COVID-19) pandemic. To date, there have been more than 2.3 million confirmed cases and more than 160,000 deaths globally caused by COVID-1...
journal_title:Journal of infection and public health
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journal_title:Journal of infection and public health
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journal_title:Journal of infection and public health
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journal_title:Journal of infection and public health
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journal_title:Journal of infection and public health
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journal_title:Journal of infection and public health
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pub_type: 杂志文章,评审
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pub_type: 杂志文章,评审
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journal_title:Journal of infection and public health
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pub_type: 杂志文章,多中心研究
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journal_title:Journal of infection and public health
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pub_type: 杂志文章
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