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- W2393087603 abstract "To shorten the star-up time of partial nitrification and improve the reaction rate,the control parameters for partial nitrification were investigated in sequencing batch reactor( SBR) to treat wastewater with high ammonia nitrogen. The results showed that the key to shorten the star-up time of partial nitrification was integrated optimization of various influencing factors,such as temperature,pH,dissolved oxygen( DO) and free ammonia( FA). Controls of pH and DO were critical to know the reaction process accurately and achieve the maximum effluent NO-2- N concentration. Appropriate temperature and pH could compensate for negative effect of low DO on the partial nitrification rate and help the ammonia oxidizing bacteria( AOB) adapt to low DO environment quickly. It only took 8 days to achieve partial nitrification successfully at temperature of 30 ℃,pH of 8. 0 ± 0. 2,DO of 0. 5 to 1. 0 mg /L and influent ammonia nitrogen loading rate( ALR) of 143 mg /( L·d). The influent ALR reached 1 716 mg /( L·d),ammonia nitrogen conversion percentage was above 94%,and the partial nitrification efficiency was stabilized at above 90% basically. The effluent NO-2- N concentration was up to 920 to 1 080 mg /L,and the partial nitrification rate was 1. 1 to 1. 2 kg /( m3·d). The reactor showed a high ammonia nitrogen loading capacity and a high partial nitrification rate." @default.
- W2393087603 created "2016-06-24" @default.
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- W2393087603 date "2014-01-01" @default.
- W2393087603 modified "2023-09-26" @default.
- W2393087603 title "Research on Control Parameters for Partial Nitrification of Wastewater with High Ammonia Nitrogen" @default.
- W2393087603 hasPublicationYear "2014" @default.
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