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- W2387775426 abstract "The effects of main factors,such as pH of solution,the ratio of COD concentration to NO-3concentration,the different kinds of carbon sources and temperature on removing NO-3 by denitrifying bacteria(DNB),are studied.The experimental results show that the suitable pH value is 6-8.When pH≤5,the removal rate of NO-3 decreased.The end pH value of solution is about 7.When the ratio of COD concentration to NO-3concentration≥1,the removal rate of NO-3 is more than 90%.The suitable ratio of COD concentration to NO-3concentration is about 1-1.5.The different kinds of carbon sources affected the removal rate of NO-3 and the removal effect of NO-3 was the best when sodium lactate was used as carbon source.When oxidation-reduction potential(ORP) was-50——200 mV,the lower the ORP was,the faster the removal rate of NO-3 was by DNB.Dissolved oxygen(DO) affected the removal rate of NO-3.When DO1 mg/L,the removal effect of NO-3 was restrained.The removal rate of NO-3 increased with the increasing of the temperature.When the experimental temperature was 17 ℃,the removal effect of NO-3 was also good." @default.
- W2387775426 created "2016-06-24" @default.
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- W2387775426 date "2010-01-01" @default.
- W2387775426 modified "2023-09-26" @default.
- W2387775426 title "Removing NO_3~- from the polluted groundwater in in-situ leaching uranium mine by DNB" @default.
- W2387775426 hasPublicationYear "2010" @default.
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