Treatment of water-based printing ink wastewater by Fenton process combined with coagulation

Attempts were made in this study to examine the efficiency of Fenton process combined with coagulation for treatment of water-based printing ink wastewater. Parameters affecting the Fenton process, such as pH, dosages of Fenton reagents and the settling time, were determined by using jar test experi...

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Bibliographic Details
Published in:Journal of hazardous materials 2009-02, Vol.162 (1), p.386-390
Main Authors: Ma, Xiang-Juan, Xia, Hui-Long
Format: Article
Language:English
Subjects:
Aluminum Silicates - chemistry
Applied sciences
Chemical engineering
Chlorides
Coagulation
Color
Crack opening displacement
Dosage
Effluents
Exact sciences and technology
Fenton reagents
Ferric Compounds
General purification processes
Hydrogen Peroxide
Hydrogen-Ion Concentration
Industrial Waste - analysis
Ink
Liquid-liquid and fluid-solid mechanical separations
Oxygen - analysis
Oxygen demand
Pollution
Polyaluminium chloride
Printing
Reactors
Settling
Sulfates
Waste Disposal, Fluid - methods
Waste water
Wastewater treatment
Wastewaters
Water
Water treatment and pollution
Water-based printing ink
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Summary:Attempts were made in this study to examine the efficiency of Fenton process combined with coagulation for treatment of water-based printing ink wastewater. Parameters affecting the Fenton process, such as pH, dosages of Fenton reagents and the settling time, were determined by using jar test experiments. 86.4% of color and 92.4% of chemical oxygen demand (COD) could be removed at pH 4, 50 mg/l H 2O 2, 25 mg/l FeSO 4 and 30 min settling time. The coagulation using polyaluminium chloride (PAC) and ferrous sulfate (FeSO 4) was beneficial to improve the Fenton process treated effluent in reducing the flocs settling time, enhancing color and COD removal. The overall color, COD and suspended solids (SS) removal reached 100%, 93.4% and 87.2% under selected conditions, respectively. Thus this study might offer an effective way for wastewater treatment of water-based ink manufacturer and printing corporation.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2008.05.068