Experimental studies of the fluid dynamics in the separation zone in dissolved air flotation

Lundh, Måns; Jönsson, Lennart; Dahlquist, Jan

doi:10.1016/s0043-1354(99)00136-0

Cited by 87 publications

(27 citation statements)

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“…A DAF permite que as micro-bolhas de ar anexem as partículas em suspensão na água e formem aglomerados de densidade menor que a água, fazendo com que os flocos a subam e se acumulem na superfície, onde podem ser removidos como lamas (LUNDH et al, 2000).…”

Section: D) Flotaçãounclassified

Remoção De Cromo De Banhos Residuais De Curtimento Através De Precipitação Química E Eletrocoagulação

Mella¹,

Glanert²,

Gutterres³

2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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Section: D) Flotaçãounclassified

Remoção De Cromo De Banhos Residuais De Curtimento Através De Precipitação Química E Eletrocoagulação

Mella¹,

Glanert²,

Gutterres³

2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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“…Another question was pointed out in tests carried out by Lundh et al (2000) that had indicated a reduction of up to 50% in the speed value measured in water containing a high micro-bubble concentration when compared to water without…”

Section: Metodologymentioning

confidence: 99%

Software Development for Hydrodynamic Study in Water and Wastewater Treatment Systems

Moruzzi

Reali

2009

RHE

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This paper presents software developed for treatment data from an Acoustic Doppler Velocimeter (ADV) probe applied to hydrodynamics studies. The software developed here was tested using a dissolved air flotation (DAF) pilot plant in water and wastewater treatment applications. The ADV principle is largely used in velocimeters, but the data are commonly presented in timetabled results. Thus, the software intended to statistically treat tabled data, to plot the vectors and to produce more comprehensive surface (3D) graphs for vector visualization. It is also possible to take detailed cross-section cuts in any portion of the vector grid, thereby creating a 2D visualization of the velocity intensity. This software should prove useful as a tool for treatment improvement, and it should contribute in the reactors hydrodynamic analyses.

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“…To address this concern, various methods, such as chemical precipitation adsorption (Liu et al 2015;Huisman et al 2006;Ö zverdi and Erdem 2006), adsorption (Cui et al 2014a, b;Kang et al 2008), ionic exchange (Zhang et al 2015;Li et al 2014;Xie et al 2014;Gode and Pehlivan 2006), electrochemical treatment (Chen 2004;Heidmann and Calmano 2008;Nanseu-Njiki et al 2009), coagulation and flocculation (El Samrani et al 2008), flotation (Lundh et al 2000;Yuan et al 2008), and membrane separation technique (Du et al 2014), have been proposed for the development of cheap and effective wastewater treatment technologies. While each method has its own advantage for treating wastewater with different levels of metal ion concentrations, adsorption is the commonly used one and it has been widely employed in industry to remove hazardous metal ions or other contaminants from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Functionalized dithiocarbamate chelating resin for the removal of Co2+ from simulated wastewater

Shi

et al. 2017

Appl Water Sci

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Industrial wastewater that contains trace amounts of heavy metal ions is often seen in petrochemical industry. While this wastewater can not be directly discharged, it is difficult to treat due to the low concentration of metal ions. Introducing chelating reagents into this wastewater for selective ion adsorption, followed by a mechanical separation process, provides an appealing solution. Toward the success of this technology, the development of effective chelating resins is of key importance. In the present work, a chelating resin containing amino and dithiocarbamate groups was reported for the removal of Co(II) metal ions in trace concentrations from simulated wastewater. By investigating the adsorption performance of the chelating resin at different solution pH values, adsorbent dosages, contact time, initial ion concentrations, and adsorption temperatures, the maximum adsorption capacity of the resin for Co(II) was identified to be 24.89 mg g -1 for a 2 g L -1 adsorbent dosage and a pH value of 5. After four adsorption-desorption cycles, 97% of the adsorption capacity of the resin was maintained. The adsorption kinetics and thermodynamics were analyzed and discussed as well.

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Experimental studies of the fluid dynamics in the separation zone in dissolved air flotation

Cited by 87 publications

References 0 publications

Remoção De Cromo De Banhos Residuais De Curtimento Através De Precipitação Química E Eletrocoagulação

Remoção De Cromo De Banhos Residuais De Curtimento Através De Precipitação Química E Eletrocoagulação

Software Development for Hydrodynamic Study in Water and Wastewater Treatment Systems

Functionalized dithiocarbamate chelating resin for the removal of Co2+ from simulated wastewater

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