Ref ID : 929
Morishita Isamu; Protozoa in sewage and waste water treatment systems. Trans.Amer.Micros.Soc. 95(3):373-377, 1976
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Some results of Japanese studies on protozoan populations in sewage and industrial waste treatment plants are briefly reviewed. Species of some 50-60 genera have been recorded, with peritrich ciliates being of most common occurrence. Use of such biological indices may be considered a distinct advantage in determining the state of water quality or the condition of activated sludge material.