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Survival of a non-flocculating bacterium, Thiobacillus thioparus TK-1, inoculated to activated sludge



Survival of a non-flocculating bacterium, Thiobacillus thioparus TK-1, inoculated to activated sludge



Water Research 29(12): 2751-2754



The survival of a non-flocculating bacterium inoculated to activated sludge and the development of the bacterial activity were examined. Thiobacillus thioparus TK- 1, which degrades O,O-dimethyl phosphorodithioate (DMDTP) contained in the wastewater of pesticide manufacturers, shows no flocculation property. This strain was inoculated to activated sludge at the concentration of 5 times 10-7, 10-5 and 10-3 cfu/ml, and a wastewater containing DMDTP was treated with this sludge. No degradation was observed for the first 3, 5 and 7 days, respectively. However, after this lag time the activated sludge developed the stable degradation activity. The population of the inoculated strain in the activated sludge decreased at first, but then increased very rapidly up to 10-8 cfu/ml and remained stable at this level.

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Accession: 002973120

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DOI: 10.1016/0043-1354(95)00155-e


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