Iron chloride for simultaneous denitrification and chemical-biological flocculation process

Hong Jie Wang; Wen Yi Dong; Li Sha Liu; Gui Chao Han

Iron chloride for simultaneous denitrification and chemical-biological flocculation process

Hong Jie Wang
, Wen Yi Dong^*
, Li Sha Liu
, Gui Chao Han

^*Corresponding author for this work

Harbin Institute of Technology Shenzhen

Research output: Contribution to journal › Article › peer-review

Abstract

The efficiency of iron chloride on simultaneous denitrification and chemical-biological flocculation process was investigated through a lab-scale study. The results showed that: there were not significant differences in the denitrification rate, COD and NO₃^--N removal efficiency between the control reactor and the denitrification reactor with the dosage of 20 mg·L^-1 Fe after 14 days' domestication. Meanwhile the TP removal efficiency was increased to over 80%. Though sludge concentration was increased by adding FeCl₃, the settling performance wasn't change because the sludge density was increased and the particle size was reduced. The sludge settling volume (SV₃₀) and specific resistance of filtration (SRF) after adding FeCl₃ were only 22% and 1.5×10¹² m·kg^-1, which were lower than the values in the control reactor and benefit for sludge treatment.

Original language	English
Pages (from-to)	1897-1901
Number of pages	5
Journal	Huanjing Kexue/Environmental Science
Volume	33
Issue number	6
State	Published - Jun 2012
Externally published	Yes

Keywords

Chemical-biological flocculation
Denitrification
Effluent quality
Iron chloride
Sludge characteristics

Cite this

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title = "Iron chloride for simultaneous denitrification and chemical-biological flocculation process",

abstract = "The efficiency of iron chloride on simultaneous denitrification and chemical-biological flocculation process was investigated through a lab-scale study. The results showed that: there were not significant differences in the denitrification rate, COD and NO3--N removal efficiency between the control reactor and the denitrification reactor with the dosage of 20 mg·L-1 Fe after 14 days' domestication. Meanwhile the TP removal efficiency was increased to over 80\%. Though sludge concentration was increased by adding FeCl3, the settling performance wasn't change because the sludge density was increased and the particle size was reduced. The sludge settling volume (SV30) and specific resistance of filtration (SRF) after adding FeCl3 were only 22\% and 1.5×1012 m·kg-1, which were lower than the values in the control reactor and benefit for sludge treatment.",

keywords = "Chemical-biological flocculation, Denitrification, Effluent quality, Iron chloride, Sludge characteristics",

author = "Wang, \{Hong Jie\} and Dong, \{Wen Yi\} and Liu, \{Li Sha\} and Han, \{Gui Chao\}",

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TY - JOUR

T1 - Iron chloride for simultaneous denitrification and chemical-biological flocculation process

AU - Wang, Hong Jie

AU - Dong, Wen Yi

AU - Liu, Li Sha

AU - Han, Gui Chao

PY - 2012/6

Y1 - 2012/6

N2 - The efficiency of iron chloride on simultaneous denitrification and chemical-biological flocculation process was investigated through a lab-scale study. The results showed that: there were not significant differences in the denitrification rate, COD and NO3--N removal efficiency between the control reactor and the denitrification reactor with the dosage of 20 mg·L-1 Fe after 14 days' domestication. Meanwhile the TP removal efficiency was increased to over 80%. Though sludge concentration was increased by adding FeCl3, the settling performance wasn't change because the sludge density was increased and the particle size was reduced. The sludge settling volume (SV30) and specific resistance of filtration (SRF) after adding FeCl3 were only 22% and 1.5×1012 m·kg-1, which were lower than the values in the control reactor and benefit for sludge treatment.

AB - The efficiency of iron chloride on simultaneous denitrification and chemical-biological flocculation process was investigated through a lab-scale study. The results showed that: there were not significant differences in the denitrification rate, COD and NO3--N removal efficiency between the control reactor and the denitrification reactor with the dosage of 20 mg·L-1 Fe after 14 days' domestication. Meanwhile the TP removal efficiency was increased to over 80%. Though sludge concentration was increased by adding FeCl3, the settling performance wasn't change because the sludge density was increased and the particle size was reduced. The sludge settling volume (SV30) and specific resistance of filtration (SRF) after adding FeCl3 were only 22% and 1.5×1012 m·kg-1, which were lower than the values in the control reactor and benefit for sludge treatment.

KW - Chemical-biological flocculation

KW - Denitrification

KW - Effluent quality

KW - Iron chloride

KW - Sludge characteristics

UR - https://www.scopus.com/pages/publications/84863563589

M3 - 文章

C2 - 22946172

AN - SCOPUS:84863563589

SN - 0250-3301

VL - 33

SP - 1897

EP - 1901

JO - Huanjing Kexue/Environmental Science

JF - Huanjing Kexue/Environmental Science

IS - 6

ER -

Iron chloride for simultaneous denitrification and chemical-biological flocculation process

Abstract

Keywords

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