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Dynamics of protozoa diversity and their relationship with performance of activated sludge system

Dynamics of protozoa diversity and their relationship with performance of activated sludge system

Chinese Journal of Applied and Environmental Biology 13(6): 840-842

The dynamics of protozoa diversity and their relationship with the physico-chemical and operational parameters of the Lugang Sewage Treatment Plant of Baoding were analyzed. The Shannon - Weaver diversity index of attached ciliates was the highest, with the average value 2. 25, while the diversity index of free-swimming ciliates was the lowest, with the average value 0. 27. The relationship was analyzed between the diversity index of each protozoa group and physico-chemical parameters. The diversity index of crawling ciliates can indicate effluent BOD5 well. High diversity index of attached ciliates represents high effluent P concentration. The diversity index of carnivorous ciliates has a good indicative value of effluent NH4-N and SVI. The diversity index of testate amoebae indicates SVI well and diversity index of naked amoebae has a good indicative value of effluent NH4-N.

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Accession: 020899742

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