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.

Advanced treatment of high strength opium alkaloid industry effluents

2002 ◽  
Vol 46 (9) ◽  
pp. 323-330 ◽  
Author(s):  
A.F. Aydin ◽  
M. Altinbas ◽  
M.F. Sevimli ◽  
I. Ozturk ◽  
H.Z. Sarikaya
Keyword(s):  
Reaction Time ◽  
Treatment Plant ◽  
Operating Conditions ◽  
Treatment System ◽  
Molar Ratio ◽  
Optimum Operating ◽  
Second Phase ◽  
Fenton’S Oxidation ◽  
Fenton's Oxidation ◽  
Opium Alkaloid

The purpose of this study was to investigate an effective treatment system which can be applicable to treat opium alkaloid industry (OAI) effluents characterised with high COD, TKN, dark color and non-biodegradable organic pollutants. In the first phase of the study, lab-scale anaerobic (UASBR) + aerobic (SBR) treatability studies were carried out on opium processing industry effluents. Effluent CODs from the two staged biological treatment system were relatively high (∼700 mgl−1) and additional post treatment was required. Physico-chemical treatability studies previously carried out on the effluent of opium alkaloid wastewater treatment plant, were not effective in removing residual COD and color. In the second phase of the study, the refractory organics causing higher inert COD values in the SBR effluent were additionally treated by using Fenton's Oxidation. The batch tests were performed to determine the optimum operating conditions including pH, H2O2 dosage, molar ratio of Fe2+/H2O2 and reaction time. It was found that removal efficiencies of COD and color for 30 minutes reaction time were about 90% and 95%, respectively. The ratio of H2O2/FeSO4 was determined as 200 mgl−1/600 mgl−1 for the optimum oxidation and coagulation process at pH 4. Experimental results of the present study have clearly indicated that the Fenton's oxidation technology is capable to treat almost all parts of the organics which consist of both soluble initial and microbial inert fractions of COD for opium alkaloid industry effluents. Effluents from the Fenton's Oxidation process can satisfy effluent standards for COD and color in general.

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.

scholarly journals Remediation of Surface Water Contaminated with Domestic Purpose Kerosene Using Fenton’s Oxidation

2019 ◽  
pp. 1-9
Author(s):  
D. Y. Shinggu ◽  
J. H. Kanus ◽  
W. O. Medjor
Keyword(s):  
Surface Water ◽  
Ambient Temperature ◽  
Total Petroleum Hydrocarbon ◽  
Optimum Conditions ◽  
First Order ◽  
First Order Kinetics ◽  
Fenton’S Oxidation ◽  
Pseudo First Order ◽  
Fenton's Oxidation ◽  
Domestic Purpose

The remediation of surface water contaminated with domestic purpose kerosene (DPK) using Fenton’s oxidation was investigated at ambient temperature for effectiveness at optimum conditions established. Results obtained from optimization studies for the Fenton’s oxidation employed for the study were 250000 mg/L H2O2 and 300 mg/L FeSO4 at ambient temperature with pH of samples adjusted to 3.0. At the end of the chemical remediation, the Fenton’s oxidation was found to be rapid with the reaction being exothermic and followed second order kinetics. About 44.4% of the total petroleum hydrocarbon (TPH) as kerosene removal efficiency was achieved after 90 minutes. The reaction also followed a pseudo-first order kinetics with the rate constant of 3x102 mol-1cm3min-1.

scholarly journals STUDY OF SYNTHETIC DYE REMOVAL USING FENTON/TiO2, FENTON/UV, AND FENTON/TiO2/UV METHODS AND THE APPLICATION TO JUMPUTAN FABRIC WASTEWATER

2019 ◽  
Vol 59 (6) ◽  
pp. 527-535
Author(s):  
Tuty Emilia Agustina ◽  
Dedi Teguh ◽  
Yourdan Wijaya ◽  
Febrian Mermaliandi ◽  
Ahmad Bustomi ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Dye Removal ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Molar Ratio ◽  
Synthetic Dyes ◽  
Optimum Conditions ◽  
Textile Materials ◽  
Textile Industries ◽  
Reactive Red 2

Synthetic dyes were commonly used in textile industries such as Jumputan fabric industries in South Sumatera. Most of these industries were categorized as a home industry without a wastewater treatment plant, so the wastewater is released directly into waterbody. In general, the wastewater contains synthetic dyes, which are harmful to the environment and human body. Therefore, the wastewater needs to be treated before its release into the environment. Reactive Red 2 (RR2) is one of important synthetic dyes usually applied for colouring textile materials such as Jumputan fabric. The RR2 was used as a pollutant model in this research. The objective of the study is to compare the removal of RR2 by using Fenton/TiO2, Fenton/UV, and Fenton/TiO2/UV methods. Furthermore, the optimum conditions obtained were applied for the treatment of wastewater from Jumputan fabric industry. As a conclusion, the highest RR2 degradation of 100% was reached by using the Fenton/TiO2/UV method after 5 minutes of reaction. It was discovered that the optimum conditions were found when using [Fe2+]/[H2O2] molar ratio of 1:80, pH of 3, and TiO2 concentration of 0.4% (w/v). However, the application of the condition to the Jumputan wastewater treatment leads to Chemical Oxygen Demand (COD) removal of 94% within 120 minutes of reaction.

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.

Sign in / Sign up

Export Citation Format

Share Document