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An investigation of the pathogenic and non-pathogenic free-living amoebae from the root zone method of wastewater treatment

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

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

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✦ Synopsis

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 gave the highest removal rates (up to 100%) while those planted in soil gave the lowest (60.4%). Possible reasons for differences in removal efficiencies are discussed. Thirteen species representing nine genera of free-living amoebae were isolated; these included three species of Acanthamoeba (A. astronyxis, A. polyphaga and A. rhysodes) all of which were pathogenic for mice. The implications for RZM design of the presence of potentially pathogenic free-living amoebae in the effluent are discussed.

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An investigation of the pathogenic and non-pathogenic free-living amoebae in an activated-sludge plant
✍ Elizabeth Ramírez; Alan Warren; Fermín Rivera; Patricia Bonilla; Salvador Rodríu 📂 Article 📅 1993 🏛 Springer Netherlands 🌐 English ⚖ 273 KB

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 sp