Characteristics of pretreatment parameters and bubble size influencing DAF efficiency

Byeong Yong Sohn, Soon Buhm Kwon, Jin Hee Min, Joonwun Kang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study attempted to investigate the relationship between the floc size and efficiency of a DAF (Dissolved Air Flotation) method using a PDA (Photometric Dispersion Analyzer), which is used to monitor floc generation via on-line access. This study applied actual measurements to investigate how the size of bubbles affected the flotation velocity, and introduced similar results to the theoretical flotation velocity reported in the literature. The results were found to play a role in improving the reliability in the evaluation of the flotation velocity of floc-bubble aggregates. From the results of the evaluation of the electrostatic characteristics for application to DAF treatments, the amount of coagulants was determined on the basis of the zeta potential value, which had to be controlled in the order of +2 ∼ + 5 mV to improve the treatment efficiency. The results of the rapid mixing intensity test using a PDA demonstrated that G value of 900 sec-1 for 1 ∼ 3 sec provided excellent treatment efficiencies in a DAF process. In addition, from the results of the flocculation test based on the flocculation index, the flocculation combination of 70/50 sec-1 gave reasonable results for DAF operation.

Original languageEnglish
Pages (from-to)1941-1953
Number of pages13
JournalSeparation Science and Technology
Volume44
Issue number9
DOIs
Publication statusPublished - 2009 Jan 1

Fingerprint

Flotation
Air
Flocculation
Coagulants
Zeta potential
Electrostatics

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Process Chemistry and Technology
  • Filtration and Separation

Cite this

Sohn, Byeong Yong ; Kwon, Soon Buhm ; Min, Jin Hee ; Kang, Joonwun. / Characteristics of pretreatment parameters and bubble size influencing DAF efficiency. In: Separation Science and Technology. 2009 ; Vol. 44, No. 9. pp. 1941-1953.
@article{90fb3f47a1874e9ab5114cc32228839f,
title = "Characteristics of pretreatment parameters and bubble size influencing DAF efficiency",
abstract = "This study attempted to investigate the relationship between the floc size and efficiency of a DAF (Dissolved Air Flotation) method using a PDA (Photometric Dispersion Analyzer), which is used to monitor floc generation via on-line access. This study applied actual measurements to investigate how the size of bubbles affected the flotation velocity, and introduced similar results to the theoretical flotation velocity reported in the literature. The results were found to play a role in improving the reliability in the evaluation of the flotation velocity of floc-bubble aggregates. From the results of the evaluation of the electrostatic characteristics for application to DAF treatments, the amount of coagulants was determined on the basis of the zeta potential value, which had to be controlled in the order of +2 ∼ + 5 mV to improve the treatment efficiency. The results of the rapid mixing intensity test using a PDA demonstrated that G value of 900 sec-1 for 1 ∼ 3 sec provided excellent treatment efficiencies in a DAF process. In addition, from the results of the flocculation test based on the flocculation index, the flocculation combination of 70/50 sec-1 gave reasonable results for DAF operation.",
author = "Sohn, {Byeong Yong} and Kwon, {Soon Buhm} and Min, {Jin Hee} and Joonwun Kang",
year = "2009",
month = "1",
day = "1",
doi = "10.1080/01496390902885189",
language = "English",
volume = "44",
pages = "1941--1953",
journal = "Separation Science and Technology",
issn = "0149-6395",
publisher = "Taylor and Francis Ltd.",
number = "9",

}

Characteristics of pretreatment parameters and bubble size influencing DAF efficiency. / Sohn, Byeong Yong; Kwon, Soon Buhm; Min, Jin Hee; Kang, Joonwun.

In: Separation Science and Technology, Vol. 44, No. 9, 01.01.2009, p. 1941-1953.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Characteristics of pretreatment parameters and bubble size influencing DAF efficiency

AU - Sohn, Byeong Yong

AU - Kwon, Soon Buhm

AU - Min, Jin Hee

AU - Kang, Joonwun

PY - 2009/1/1

Y1 - 2009/1/1

N2 - This study attempted to investigate the relationship between the floc size and efficiency of a DAF (Dissolved Air Flotation) method using a PDA (Photometric Dispersion Analyzer), which is used to monitor floc generation via on-line access. This study applied actual measurements to investigate how the size of bubbles affected the flotation velocity, and introduced similar results to the theoretical flotation velocity reported in the literature. The results were found to play a role in improving the reliability in the evaluation of the flotation velocity of floc-bubble aggregates. From the results of the evaluation of the electrostatic characteristics for application to DAF treatments, the amount of coagulants was determined on the basis of the zeta potential value, which had to be controlled in the order of +2 ∼ + 5 mV to improve the treatment efficiency. The results of the rapid mixing intensity test using a PDA demonstrated that G value of 900 sec-1 for 1 ∼ 3 sec provided excellent treatment efficiencies in a DAF process. In addition, from the results of the flocculation test based on the flocculation index, the flocculation combination of 70/50 sec-1 gave reasonable results for DAF operation.

AB - This study attempted to investigate the relationship between the floc size and efficiency of a DAF (Dissolved Air Flotation) method using a PDA (Photometric Dispersion Analyzer), which is used to monitor floc generation via on-line access. This study applied actual measurements to investigate how the size of bubbles affected the flotation velocity, and introduced similar results to the theoretical flotation velocity reported in the literature. The results were found to play a role in improving the reliability in the evaluation of the flotation velocity of floc-bubble aggregates. From the results of the evaluation of the electrostatic characteristics for application to DAF treatments, the amount of coagulants was determined on the basis of the zeta potential value, which had to be controlled in the order of +2 ∼ + 5 mV to improve the treatment efficiency. The results of the rapid mixing intensity test using a PDA demonstrated that G value of 900 sec-1 for 1 ∼ 3 sec provided excellent treatment efficiencies in a DAF process. In addition, from the results of the flocculation test based on the flocculation index, the flocculation combination of 70/50 sec-1 gave reasonable results for DAF operation.

UR - http://www.scopus.com/inward/record.url?scp=70449469193&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70449469193&partnerID=8YFLogxK

U2 - 10.1080/01496390902885189

DO - 10.1080/01496390902885189

M3 - Article

VL - 44

SP - 1941

EP - 1953

JO - Separation Science and Technology

JF - Separation Science and Technology

SN - 0149-6395

IS - 9

ER -