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231226s2023 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2023.100
|2 doi
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|a pubmed25n1187.xml
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|a (NLM)37119169
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Niu, Xinyuan
|e verfasserin
|4 aut
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|a Modification of a plant-scale semi-centralized wastewater treatment system to enhance nitrogen and phosphorus removal from black water
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.05.2023
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|a Date Revised 01.05.2023
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|a published: Print
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|a Citation Status MEDLINE
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|a Owing to the low ratio of chemical oxygen demand to total nitrogen (SCOD/TN), effective removal of nutrient pollutants from black water is difficult. In this study, to enhance nitrogen and phosphorus removal from such wastewater, a series of operational modification strategies was investigated and applied to a plant-scale semi-centralized system used for black water treatment. The results showed that 21 mg Fe3+/L was the optimal dosage for the chemical-enhanced pretreatment process, achieving average removal efficiencies of 51.1 and 74.1% for organics and phosphorus, respectively, with a slight enhancement in nitrogen removal by 2.3%. However, nitrogen and phosphorus removal could be further enhanced to 88 and 96%, by the addition of carbon sources in the post-anoxic zone of the reversed anaerobic-anoxic-aerobic process. Contrastingly, neither the addition of carbon sources in the pre-anoxic zone nor the prolongation of the time for pre-denitrification could significantly improve the nitrogen and phosphorus removal efficiencies. Furthermore, reducing the aeration intensity promoted simultaneous nitrification and denitrification in aerobic reactors, thereby making it a potential energy-saving method for system operation
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|a Journal Article
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|a Phosphorus
|2 NLM
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|a 27YLU75U4W
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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|a Sewage
|2 NLM
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| 700 |
1 |
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|a Bi, Xuejun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gu, Ruihuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yin, Zhixuan
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Benliang
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Changqing
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 87(2023), 8 vom: 09. Apr., Seite 2005-2019
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnas
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| 773 |
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|g volume:87
|g year:2023
|g number:8
|g day:09
|g month:04
|g pages:2005-2019
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|u http://dx.doi.org/10.2166/wst.2023.100
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