PERFORMANCE OF A GRANULAR-FLOCCULENT SLUDGE COUPLING SINGLE-STAGE AUTOTROPHIC NITROGEN REMOVAL SYSTEM

ZHAO Wan-qing; LI Bo-lin; WANG Wei; LI Ye; WANG Heng; WANG Yue; LIANG Ya-nan

doi:10.13205/j.hjgc.202009007

Volume 38 Issue 9

Nov. 2020

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ZHAO Wan-qing, LI Bo-lin, WANG Wei, LI Ye, WANG Heng, WANG Yue, LIANG Ya-nan. PERFORMANCE OF A GRANULAR-FLOCCULENT SLUDGE COUPLING SINGLE-STAGE AUTOTROPHIC NITROGEN REMOVAL SYSTEM[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 43-47,199. doi: 10.13205/j.hjgc.202009007

Citation:

ZHAO Wan-qing, LI Bo-lin, WANG Wei, LI Ye, WANG Heng, WANG Yue, LIANG Ya-nan. PERFORMANCE OF A GRANULAR-FLOCCULENT SLUDGE COUPLING SINGLE-STAGE AUTOTROPHIC NITROGEN REMOVAL SYSTEM[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 43-47,199. doi: 10.13205/j.hjgc.202009007

Citation:

ZHAO Wan-qing, LI Bo-lin, WANG Wei, LI Ye, WANG Heng, WANG Yue, LIANG Ya-nan. PERFORMANCE OF A GRANULAR-FLOCCULENT SLUDGE COUPLING SINGLE-STAGE AUTOTROPHIC NITROGEN REMOVAL SYSTEM[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 43-47,199. doi: 10.13205/j.hjgc.202009007

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PERFORMANCE OF A GRANULAR-FLOCCULENT SLUDGE COUPLING SINGLE-STAGE AUTOTROPHIC NITROGEN REMOVAL SYSTEM

doi: 10.13205/j.hjgc.202009007

ZHAO Wan-qing^1,2,
LI Bo-lin^{1,2
,
,},
WANG Wei^1,2,
LI Ye^1,2,
WANG Heng^1,2,
WANG Yue^1,2,
LIANG Ya-nan^1,2

1. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;
2. Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan 430070, China

Received Date: 2019-05-31

Abstract

Abstract

In SBR (Ⅰ) reactor, the granular-flocculent sludge coupled single-stage autotrophic nitrogen removal system was rapidly started, and then the change of nitrogen removal performance of granular and flocculent sludge before and after start-up was studied. The sludge before start-up and after the start of the system was sampled to carry out batch experiments and the changes of denitrification and anaerobic ammonium oxidation denitrification performance were investigated by inhibiting the activity of anaerobic ammonium oxidizing bacteria (AAOB) by methanol. The total nitrogen removal rate (NRE) of flocculent sludge increased from 10.14% before start-up, to 89.70% after start-up, of which the proportion of anaerobic ammonia oxidation increased from 2.23% before start-up to 83.70%, and the proportion of denitrification decreased from 7.91% to 5%~6%. The NRE of granular sludge increased from 3.90% before start-up to 83.20% after start-up, the proportion of anaerobic ammonium oxidation increased from less than 1% to 80.20%, and the proportion of denitrification decreased from 7.72% to 2%~3%.
- granular-flocculent sludge coupling,
- single-stage autotrophic nitrogen removal,
- anammox bacteria,
- denitrification,
- nitrogen removal performance

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References

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