scholarly journals A Study on the Removal of Fluorescent Whitening Agent by Pretreatment Ozone Oxidation for MBR Process Application

2019 ◽  
Author(s):  
Dong-Hoon Shin ◽  
Jang-Seung Choi ◽  
Seung-Han Ryu ◽  
Jin-Ho Kim ◽  
Sang-Hun Lee ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Paper Industry ◽  
Synthetic Wastewater ◽  
Disulfonic Acid ◽  
Biodegradable Materials ◽  
Wastewater Sample ◽  
Ozone Oxidation ◽  
Fluorescent Whitening Agent ◽  
Whitening Agent ◽  
Oxidation Experiment

In this study, ozone oxidation experiment was carried out for the removal of fluorescent whitening agent which is widely used in textile dyeing and paper industry. The stilbene fluorescent whitening agent has been industrialized since the earliest, and the amount of current production is the highest. Due to the characteristics of the fluorescent whitening agent that cannot be removed by conventional wastewater treatment methods, the fluorescent whitening agent in wastewater treatment has difficulty in using as recycled water in the process. Pre-treatment ozone oxidation experiment was conducted prior to the introduction of Membrane Bio Reactor (MBR) treatment process by converting biodegradable materials into biodegradable materials. The removal efficiencies of fluorescent whitening agents, a diaminostilbene disulfonic acid derivative by ozone oxidation were evaluated by UV254 Scan, COD, T-N and color using a synthetic wastewater sample (COD=433.0 mg/ℓ) and paper and paper mill wastewater (COD=157.2 mg/ℓ).

scholarly journals Study on the Removal of Fluorescent Whitening Agent from Paper-Mill Wastewater Using the Submerged Membrane Bioreactor (SMBR) with Ozone Oxidation Process

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1068
Author(s):  
Seunghan Ryu ◽  
Sanghun Lee ◽  
Hannah Oh ◽  
Sanghwa Oh ◽  
Minsoo Park ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
Treatment Process ◽  
Oxidation Process ◽  
Paper Mill ◽  
Oxidation Treatment ◽  
Ozone Oxidation ◽  
Fluorescent Whitening Agent ◽  
Submerged Membrane Bioreactor ◽  
Whitening Agent ◽  
Paper Mill Wastewater

In this study, paper-mill wastewater was treated using the Submerged Membrane Bioreactor (SMBR) process. In particular, the ozone oxidation treatment process is applied after SMBR to remove the fluorescent whitening agent, which is a trace pollutant and non-biodegradable. Fluorescent whitening agent concentration was indirectly measured by UV scanning and COD concentration. The concentration of COD before SMBR and ozone oxidation was 449.3 mg/L, and the concentration of treated water was 100.3 mg/ℓ. The COD removal efficiency of paper-mill wastewater through SMBR and the ozone oxidation process was about 77.68%. The optimized amount of ozone was required for the removal of the fluorescent whitening agent after SMBR was 95 mg·O3/ℓ calculated by UV scan results. Additionally, the optimized amount of required ozone to remove COD was calculated to 0.126 mg·COD/mg·O3.

scholarly journals Study on the Removal of Fluorescent Whitening Agent for Paper-mill Wastewater Reuse using the Submerged Membrane Bioreactor (SMBR) with Ozone Oxidation Process

2019 ◽  
Author(s):  
Jang-Seung Choi ◽  
Dong-Hoon Shin ◽  
Seung-Han Ryu ◽  
Jae-Young Ryu ◽  
Won-Sik Shin ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Treatment Process ◽  
Wastewater Reuse ◽  
Paper Mill ◽  
Effluent Water ◽  
Ozone Oxidation ◽  
Fluorescent Whitening Agent ◽  
Whitening Agent ◽  
Paper Mill Wastewater ◽  
Solid Liquid

In this study, effluent water was produced through Submerged Membrane Bio-Reactor (SMBR) process, which is a simple system and decomposes organic matter contained in wastewater with biological treatment process and performs solid-liquid separation, Especially, ozone oxidation treatment process is applied to effluent water containing fluorescent whitening agent, which is a trace pollutant which is not removed by biological treatment, and influences the quality of reused water. The concentration of COD in the SMBR was 449.3 mg/ℓ-COD, and the concentration of permeate water was 100.3 mg/ℓ-COD. The removal efficiency was about 70.1%. The amount of ozone re- quired for the removal of the fluorescent whitening agent in the permeated water in SMBR was 6.67 g-O3/min, and the amount of ozone required to remove COD relative to the permeate water was calculated to remove 0.997 mg-COD for 1 mg of O3.

scholarly journals Study on the Removal of Fluorescent Whitening Agent by Pretreatment Ozone Oxidation for MBR Process Application

2017 ◽  
Vol 29 (1) ◽  
pp. 11-17
Author(s):  
Jang-Seung Choi ◽  
Seung-Han Ryu ◽  
Dong-Hun Shin ◽  
Jae-Hun Lee ◽  
Soo-Chol Lee ◽  
...  
Keyword(s):  
Ozone Oxidation ◽  
Fluorescent Whitening Agent ◽  
Whitening Agent

Upgrading Wastewater Treatment by Water Hyacinth in Developing Countries

1990 ◽  
Vol 22 (7-8) ◽  
pp. 153-160 ◽  
Author(s):  
Pradeep Kumar ◽  
R. J. Garde
Keyword(s):  
Wastewater Treatment ◽  
Water Hyacinth ◽  
Treatment Plant ◽  
Cod Removal ◽  
Treatment System ◽  
Synthetic Wastewater ◽  
Second Phase ◽  
Treatment Unit ◽  
Batch Studies ◽  
New Treatment

With increasing stress on existing wastewater treatment systems, it is necessary either to upgrade the treatment unit(s) or install an entirely new treatment plant. Obviously, the upgrading is preferred over the alternative of having a new system. Keeping this in view, in the present project, an attempt has been made to explore the possibility of upgrading existing facultative ponds using water hyacinth. Bench-scale batch studies were designed to compare the performance of hyacinth treatment system with facultative ponds. Investigations were carried out with synthetic wastewater having COD in the range of 32.5-1090 mg/l. The efficiency of COD removal in water hyacinth ponds was 15-20 percent more than the facultative ponds. Based on the results, an empirical model has been proposed for COD removal kinetics. In the second phase of the project a hyacinth pond was continuously operated. BOD, COD, TS, TN, TP, pH, and DO were regularly monitored. However, the DO of the effluent from hyacinth treatment system was considerably reduced. Effluent should be aerated before it is discharged. The results indicate that the existing facultative ponds can be stalked with water hyacinth to improve their performance as well as hyacinth treatment systems can be installed to support the conventional treatment.

VOC Fate Model Verification at Multiple Pulp Mill Wastewater Treatment Sites

1992 ◽  
Vol 26 (1-2) ◽  
pp. 407-415 ◽  
Author(s):  
D. A. Barton ◽  
J. J. McKeown ◽  
W. Chudyk
Keyword(s):  
Wastewater Treatment ◽  
Paper Industry ◽  
Pulp Mill ◽  
Pulp And Paper Industry ◽  
Model Verification ◽  
Initial Model ◽  
Gas Sampling ◽  
Treatment Processes ◽  
Fate Model

A model of organic compound removal by biological wastewater treatment processes receiving pulp and paper industry wastewaters has been developed and initial model verification performed at a single mill site. This paper presents the results of further model verification conducted at multiple mill sites, including replication of the original site. In addition, VOC losses at other unit processes are quantified. Activated sludge basin chloroform volatilization rates are predicted to within twelve percent of the measured rates. Predicted overall methanol removals are consistent with observed removals although difficulties encountered during off-gas sampling preclude determination of the extent of removal due to volatilization.

Sign in / Sign up

Export Citation Format

Share Document