Development of Steam Cleaning Technique to Improve Removal Efficiency of Membrane Fouling Matter in Water Treatment Process Using Ceramic Membrane

2018 ◽  
Vol 26 (6) ◽  
pp. 99-107
Author(s):  
Joon-Seok Kang ◽  
Seo Gyeong Park ◽  
Jeong Eun Lee ◽  
So Yeon Kang ◽  
Jeong Jun Lee ◽  
...  
Keyword(s):  
Water Treatment ◽  
Removal Efficiency ◽  
Membrane Fouling ◽  
Treatment Process ◽  
Ceramic Membrane ◽  
Water Treatment Process

scholarly journals Optimal Water Backwashing Condition in Combined Water Treatment of Alumina Microfiltration and PP Beads

Membranes ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 92
Author(s):  
Hyungmin Cho ◽  
Gihoon Yoon ◽  
Minjae Kim ◽  
Jin Yong Park
Keyword(s):  
Water Treatment ◽  
Membrane Fouling ◽  
Treatment Process ◽  
Membrane Separation ◽  
Combined Process ◽  
Water Treatment Process ◽  
A Minor ◽  
Membrane Shape ◽  
Tubular Membranes ◽  
Total Membrane

Membrane fouling is a dominant limit of the membrane separation process. In this research, the optimal water backwashing to solve the membrane fouling problem was investigated in the combined water treatment process of alumina MF and pure polypropylene (PP) beads. Additionally, the influence of membrane shape (tubular or seven channel) was examined, depending on the water backwashing period. The optimal backwashing time (BT) could be 20 s in the combined water treatment process, because of the highest total treated volume (VT) in our BT 6–30 s conditions. The optimal backwashing period (BP) could be 6 min, because of the minimum membrane fouling and the maximum VT in the combined process of tubular alumina MF and PP beads. The resistance of reversible membrane fouling (Rrf) showed a major resistance of total membrane fouling, and that of irreversible membrane fouling (Rif) was a minor one, in the combined process using tubular or seven channel MF. The Rif showed a decreasing trend obviously, as decreasing BT from NBW to 2 min for seven channel MF. It means that the more frequent water backwashing could be more effective to control the membrane fouling, especially irreversible fouling, for seven channel membranes than tubular membranes.

scholarly journals The Role of Humic Acid, PP Beads, and pH with Water Backwashing in a Hybrid Water Treatment of Multichannel Alumina Microfiltration and PP Beads

Membranes ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 3 ◽  
Author(s):  
Sungju Hwang ◽  
Yooju Lee ◽  
Jin Yong Park
Keyword(s):  
Humic Acid ◽  
Water Treatment ◽  
Uv Irradiation ◽  
Membrane Fouling ◽  
Treatment Process ◽  
Fouling Resistance ◽  
Treatment Efficiency ◽  
Water Treatment Process ◽  
Inorganic Molecules

Photooxidation oxidizes most organic compounds by mineralizing them to small inorganic molecules. In this study, the effects of dissolved organic matter (DOM), pH, and polypropylene (PP) beads concentration on membrane fouling were investigated in a hybrid water treatment process consisting of seven-channel alumina microfiltration (pore size 1.0 μm) and pure PP beads water backwashing with UV irradiation for photooxidation. The synthetic feed was prepared with humic acid and kaolin and flowed inside the microfiltration (MF) membrane. The permeate contacted the PP beads fluidized in the gap of the membrane and module with outside UV irradiation. Membrane fouling resistance (Rf) increased dramatically with an increase in the concentration of humic acid (HA) from 6 mg/L to 8 mg/L. The treatment efficiency of DOM increased dramatically, from 14.3% to 49.7%, with an increase in the concentration of HA. The Rf decreased with an increase of PP beads concentration. However, maximum permeate volume (VT) was acquired at 5 g/L of PP beads. The maximal treatment efficiency of DOM was 51.3% at 40 g/L of PP beads. The Rf increased with an increase in the pH of feed, and the maximum VT was acquired at a pH of 5. The maximal treatment efficiency of DOM was 52.5% at pH 9.

scholarly journals Performance of rapid sand filter – single media to remove microplastics

2021 ◽  
Author(s):  
Emenda Sembiring ◽  
Mutiara Fajar ◽  
Marisa Handajani
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Alternative Treatment ◽  
Treatment Process ◽  
Drinking Water Treatment ◽  
Raw Water ◽  
Sand Filter ◽  
Water Treatment Process ◽  
Water Treatments

Abstract Microplastics (MPs) have been detected in drinking water and raw water sources. Therefore, it is important to know the performance of drinking water treatment process. Rapid sand filter (RSF)is one of the water treatments that can be an alternative treatment in removing MPs after several configuration processes (pre-sedimentation, coagulation-flocculation, and sedimentation). This study aims to determine the effectiveness of RSF to remove MPs. The artificial samples were made from plastics bags and tyre flakes which size were from 10 μm to more than 500 μm. Bentonite is added to represent a turbidity in the water. The average removal efficiency of plastics flakes before entering the filter was 50.48% (using bentonite) and 47.78% (without bentonite). Overall, the removal efficiency for the tyre flakes was 90.72% (using bentonite) and 93.03% (without bentonite). The filtration used in this study was varied between 4 and 10 m/h. Removal efficiency using RSF for plastic flakes on which Effective Size (ES) filter media 0.39 mm was 97.7% and on which ES 0.68 mm was 94.3%. Meanwhile, the removal efficiency of the tyre flakes for ES 0.39 mm were 90.6% and ES 0.68 mm was 85.2%. However, in this study, RSF mostly removed MPs particles greater than 200- μm in size.

PRELIMINARY EVALUATION OF THE ENVIRONMENTAL IMPACT OF WATER TREATMENT PROCESS

2016 ◽  
Vol 15 (8) ◽  
pp. 1867-1872
Author(s):  
Florina Fabian ◽  
Silvia Fiore ◽  
Giuseppe Genon ◽  
Deborah Panepinto ◽  
Valentin Nedeff ◽  
...  
Keyword(s):  
Water Treatment ◽  
Environmental Impact ◽  
Treatment Process ◽  
Preliminary Evaluation ◽  
Water Treatment Process
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