Color and COD removal from wastewater containing Reactive Black 5 using Fenton’s oxidation process

Chemosphere ◽  
2004 ◽  
Vol 54 (3) ◽  
pp. 435-441 ◽  
Author(s):  
Süreyya Meriç ◽  
Deniz Kaptan ◽  
Tuğba Ölmez
Keyword(s):  
Oxidation Process ◽  
Cod Removal ◽  
Reactive Black 5 ◽  
Fenton’S Oxidation ◽  
Fenton's Oxidation ◽  
Color And Cod Removal

Decolorization of textile wastewater by ozonation and Fenton's process

2002 ◽  
Vol 45 (12) ◽  
pp. 279-286 ◽  
Author(s):  
M.F. Sevimli ◽  
C. Kinaci
Keyword(s):  
Hydrogen Peroxide ◽  
Ferrous Sulfate ◽  
Cod Removal ◽  
Color Removal ◽  
Ozone Dose ◽  
Fenton’S Oxidation ◽  
Removal Efficiencies ◽  
Fenton's Oxidation ◽  
Color And Cod Removal ◽  
Fenton's Process

The aim of this study is to investigate the effect of some operational parameters on the efficiency of ozonation and Fenton's process for decolorization and COD removal. Acid Red 337 and Reactive Orange 16 dye solutions and the effluents of acid and reactive dye-bath effluents were used in the experiments. The influence of ozone dose and pH for color and COD removal from the wastewater were studied. Increasing the ozone dose increased the rate constants, and color and COD removal efficiencies. Ozone consumption ratio per unit color and COD removal at any time was found to be almost the same while the applied ozone dose was different. pH did not significantly affect color and COD removal from the wastewater by ozonation. In spite of having high color removal efficiencies (60–91%), limited COD removal efficiencies between 9–17% at 30 minutes ozonation time were obtained. In the Fenton oxidation experiments, the effects of pH, temperature, dosage of ferrous sulfate and hydrogen peroxide, and the proper ratio of Fe(II)/H2O2 were studied. The result indicates that up to 99% color removal and 82% COD removal can be obtained by Fenton's oxidation. While Fenton's oxidation was greatly affected by the pH value, temperature of wastewater did not significantly affect the Fenton process for color removal. Increasing the dose of both hydrogen peroxide and ferrous sulfate enhanced the removal efficiencies of color and COD. Suitable ratios of Fe(II)/H2O2 were found to be between 0.5 and 0.83.

scholarly journals A novel process of dye wastewater treatment by linking advanced chemical oxidation with biological oxidation

2015 ◽  
Vol 41 (4) ◽  
pp. 33-39 ◽  
Author(s):  
Haiming Zou ◽  
Wanzheng Ma ◽  
Yan Wang
Keyword(s):  
Oxidation Process ◽  
Chemical Oxidation ◽  
Chinese Government ◽  
Biological Oxidation ◽  
Dye Wastewater ◽  
Organic Substances ◽  
Combination Process ◽  
Fenton’S Oxidation ◽  
New Process ◽  
Fenton's Oxidation

Abstract Dye wastewater is one of typically non-biodegradable industrial effluents. A new process linking Fenton’s oxidation with biological oxidation proposed in this study was investigated to degrade the organic substances from real dye wastewater. During the combination process, the Fenton’s oxidation process can reduce the organic load and enhance biodegradability of dye wastewater, which is followed by biological aerated filter (BAF) system to further remove organic substances in terms of discharge requirement. The results showed that 97.6% of chemical oxygen demand (COD) removal by the combination process was achieved at the optimum process parameters: pH of 3.5, H2O2 of 2.0 mL/L, Fe(II) of 500 mg/L, 2.0 h treatment time in the Fenton’s oxidation process and hydraulic retention time (HRT) of 5 h in the BAF system. Under these conditions, COD concentration of effluent was 72.6 mg/L whereas 3020 mg/L in the influent, thus meeting the requirement of treated dye wastewater discharge performed by Chinese government (less than 100 mg/L). These results obtained here suggest that the new process combining Fenton’s oxidation with biological oxidation may provide an economical and effective alternative for treatment of non-biodegradable industrial wastewater.

A Study of Fenton’s Oxidation Pretreatment on Dye Wastewater Containing Acetic Acid

2014 ◽  
Vol 1044-1045 ◽  
pp. 215-218
Author(s):  
Xian Huan Qiu ◽  
Hai Yu ◽  
Peng Fei Deng
Keyword(s):  
Acetic Acid ◽  
Processing Time ◽  
Ph Value ◽  
Removal Rate ◽  
Cod Removal ◽  
Dye Wastewater ◽  
Fenton’S Oxidation ◽  
Effects Of Ph ◽  
Cod Removal Rate ◽  
Fenton's Oxidation

In the presence of acetic acid, the effects of pH, processing time, addition of Fe2+ and H2O2 on dye wastewater treatment were studied. Experimental results showed that in the presence of acetic acid, when the pH value was 4, the processing time was 30.0min, addition of ferrous sulfate was 4.8g/L, and addition of hydrogen peroxide was 56mL/L, the treatment effect was the best, COD removal rate reached 51.0%. Further studied of the effect of the presence of acetic acid on Fenton’s oxidation of dye wastewater, the results showed that without of acetic acid, the COD removal rate was higher than that with acetic acid. And the effect of Fenton's reagent on oxidation of dye substances was interfered by the presence of acetic acid.

Removal of refractory organics and color in pigment wastewater with Fenton oxidation

1999 ◽  
Vol 39 (10-11) ◽  
pp. 189-192 ◽  
Author(s):  
T. J. Park ◽  
K. H. Lee ◽  
E. J. Jung ◽  
C. W. Kim
Keyword(s):  
Oxidation Process ◽  
Effective Means ◽  
Treatment Plant ◽  
Molar Ratio ◽  
Tertiary Treatment ◽  
Optimum Conditions ◽  
Fenton’S Oxidation ◽  
Removal Efficiencies ◽  
Fenton's Oxidation ◽  
Final Effluent

This study was designed to evaluate (1) the removal of the non-biodegradable organics and color by Fenton's oxidation (2) the feasibility of Fenton's oxidation as a pretreatment or tertiary treatment following the activated sludge process in the pigment wastewater. The study was divided into two parts. The first part consisted of investigations on raw Yellow wastewater and Red wastewater, the second part was carried out on the final effluent from the existing extended aeration treatment plant. The batch test was conducted to determine the optimum conditions for plant operation such as pH, H2O2 dosage, molar ratio of Fe2+/H2O2 and contact time. It was found that the removal efficiencies of COD were 54.2%, 52.6% and 58.9%, the removal efficiencies of the color were 91.2%, 18.1% and 45.7%, for Red, Yellow Wastewater and Final Effluent, respectively. In the Yellow wastewater, BOD5COD ratio was not changed much after Fenton's oxidation, but in the case of the Red wastewater, BOD5COD ratio was increased from 0.04 to 0.36. Therefore Fenton's oxidation process is a very effective means for a pretreatment or tertiary treatment in the Pigment wastewater.

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