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 The investigation of paper mill industry wastewater treatment and activated sludge properties in a submerged membrane bioreactor

2017 ◽  
Vol 76 (7) ◽  
pp. 1715-1725 ◽  
Author(s):  
Hanife Sari Erkan ◽  
Guleda Onkal Engin
Keyword(s):  
Retention Time ◽  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Extracellular Polymeric Substances ◽  
Experimental Studies ◽  
Paper Mill ◽  
Calcium Accumulation ◽  
Submerged Membrane Bioreactor ◽  
Paper Mill Wastewater ◽  
Industry Wastewater

The paper mill industry produces high amounts of wastewater and, for this reason, stringent discharge limits are applied for sustainable reclamation and reuse of paper mill industry wastewater in many countries. Submerged membrane bioreactor (sMBR) systems can create new opportunities to eliminate dissolved substances present in paper mill wastewater including. In this study, a sMBR was operated for the treatment of paper mill industry wastewater at 35 h of hydraulic retention time (HRT) and 40 d of sludge retention time (SRT). The chemical oxygen demand (COD), NH3-N and total phosphorus (TP) removal efficiencies were found to be 98%, 92.99% and 96.36%. The results demonstrated that sMBR was a suitable treatment for the removal of organic matter and nutrients for treating paper mill wastewater except for the problem of calcium accumulation. During the experimental studies, it was noted that the inorganic fraction of the sludge increased as a result of calcium accumulation in the reactor and increased membrane fouling was observed on the membrane surface due to the calcification problem encountered. The properties of the sludge, such as extracellular polymeric substances (EPS) and soluble microbial products (SMP), relative hydrophobicity, zeta potential and floc size distribution were also monitored. According to the obtained results, the total EPS was found to be 43.93 mg/gMLSS and the average total SMP rejection by the membrane was determined as 66.2%.

A GA-Based Neural Fuzzy System for Modeling a Paper Mill Wastewater Treatment Process

2011 ◽  
Vol 50 (23) ◽  
pp. 13500-13507 ◽  
Author(s):  
Mingzhi Huang ◽  
Jinquan Wan ◽  
Yongwen Ma ◽  
Huiping Zhang ◽  
Yan Wang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuzzy System ◽  
Treatment Process ◽  
Paper Mill ◽  
Wastewater Treatment Process ◽  
Paper Mill Wastewater ◽  
Neural Fuzzy

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).

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