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Author:

Wang, YY (Wang, YY.) | Peng, YZ (Peng, YZ.) (Scholars:彭永臻) | Peng, CY (Peng, CY.) | Wang, SY (Wang, SY.) (Scholars:王淑莹) | Zeng, W (Zeng, W.) (Scholars:曾薇)

Indexed by:

CPCI-S EI Scopus SCIE

Abstract:

The effect of added carbon source and nitrate concentration on the denitrifying phosphorus T removal by denitrifying phosphorus removal bacteria sludge was systematically studied using batch 0 experiments, at the same time the variation of ORP was investigated. Results showed that the denitrifying and phosphorus uptake rate in the anoxic phase increased with the high initial anaerobic carbon source addition. However, once the initial COD concentration reached a certain level, which was in excess of the U PHB saturation of Poly-p bacteria, residual COD carried over to the anoxic phase inhibited the subsequent denitrifying phosphorus uptake. This was equal to supplementing the external carbon source to the anoxic phase, furthermore the higher the external carbon source concentration the more powerful the inhibition caused. High nitrate concentration in the anoxic phase increased the initial denitrifying phosphorus rate. Once the nitrate was exhausted, phosphate uptake changed to phosphate release. Moreover, the time of this turning point occurred later with the higher nitrate addition. On the other hand, through on-line monitoring the variation of the ORP with different initial COD concentration, it was found that ORP could be used as a control parameter for phosphorus release, but it is impossible to utilize ORP for controlling the dinitrification and anoxic phosphorus uptake operations.

Keyword:

biological phosphorus removal nitrate carbon source anaerobic-anoxic processes denitrifying phosphorus removal bacteria ORP

Author Community:

  • [ 1 ] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150091, Peoples R China
  • [ 2 ] Zhejiang Univ Technol, Dept Civil Engn, Hangzhou 310014, Peoples R China
  • [ 3 ] Beijing Univ Technol, Key Lab Beijing Water Qual Sci, Beijing 100022, Peoples R China
  • [ 4 ] Tongji Univ, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China

Reprint Author's Address:

  • 汪滢莹

    [Wang, YY]Harbin Inst Technol, Sch Municipal & Environm Engn, 92 Xidazhi St, Harbin 150091, Peoples R China

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Source :

WATER SCIENCE AND TECHNOLOGY

ISSN: 0273-1223

Year: 2004

Issue: 10

Volume: 50

Page: 153-161

2 . 7 0 0

JCR@2022

ESI Discipline: ENVIRONMENT/ECOLOGY;

JCR Journal Grade:3

Cited Count:

WoS CC Cited Count: 15

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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