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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 2604

Henryk Klimowicz; Microfauna of activated sludge Part I. Assemblage of microfauna in laboratory models of activated sludge. Acta Hydrobiologica (Acta Hydrobiol.) 12(4):357-376, 1970

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Five separate experiments were carried out, differing mainly in the various loadings of impurities contained in the sewage, influent to the activated sludge. A markedly greater difference in the number of individuals of particular species than in the species assemblage could be observed. At high loadings the most numerous were: Paramecium caudatum, Vorticella putrina, V. microstoma, V. extensa, Opercularia microdiscum and O. coarctata. At medium loadings: Trachelophyllum pusillum, Cephalodella gibba, Amphileptus claparedei and Litonotus fasciola. At low loadings: Vorticella picta, Zoothamnium arbuscula, Z. simplex, Colpes hirtus, Peranema trichophorum, Monostyla bulla and Actinosphaerium eichhorni. At varying loadings, a similar number of individuals was presented by the species: Vorticella convallaria, Aspidisca costata, Habrotrocha bidens, Nematodes sp. Litonotus crinitus and Urostyla weissei.