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An investigation of the pathogenic and non-pathogenic free-living amoebae in an activated-sludge plant

✍ Scribed by Elizabeth Ramírez; Alan Warren; Fermín Rivera; Patricia Bonilla; Salvador Rodríuez; Arturo Calderón; Ricardo Ortíz; Elvia Gallegos


Publisher
Springer Netherlands
Year
1993
Tongue
English
Weight
273 KB
Volume
69
Category
Article
ISSN
0049-6979

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✦ Synopsis


Pathogenic and non-pathogenic free-living amoebae from an activated-sludge plant were investigated. The greatest species diversity occurred in the raw, settled sewage and at the beginning of the aeration tank, whilst the lowest number of species occurred in the final sedimentation tanks. Thirteen species of free-living amoebae representing eleven genera were isolated; these included three species of Acanthamoeba (A. castellanii, A. culbertsoni and A. polyphaga), all of wich were pathogenic to mice with varying degrees of virulence. The implications for the public health risk of the presence of pathogenic free-living amoebae in activated-sludge plants are discussed.


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✍ Fermín Rivera; Salvador Rodríguez; Alan Warren; Patricia Bonilla; Elizabeth Ramí 📂 Article 📅 1993 🏛 Springer Netherlands 🌐 English ⚖ 329 KB

Pathogenic and non-pathogenic free-living amoebae from the Root Zone Method (RZM) of wastewater treatment were investigated. Ten reed beds planted on four different substrate types were compared for their efficiency of removal of free-living amoebae. Reed beds planted on coarse substrates generally