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

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

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

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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