Identification of scaling during clean-in-place (CIP) in membrane water treatment process

Khan, Imtiaz Afzal; Lee, Yong-Soo; Kim, Jong Oh

doi:10.1016/j.chemosphere.2019.124398

Cited by 21 publications

(7 citation statements)

References 45 publications

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“…Krischner et al also reported the threshold and critical flux for latex bead suspension and soybean oil emulsion [9], similar to another study [16]. However, the combination of inorganic foulants (Al, Mn, and Fe) with organic foulants and their impact on membrane fouling was not reported in detail [17][18][19]. In addition, fouling propagation of membranes due to Ca 2+ and Mg 2+ was well addressed on the basis of an interaction mechanism for HA and membranes [20,21].…”

Section: Introductionmentioning

confidence: 67%

“…However, the standard fouling mechanism is not the surface fouling phenomenon found in dead-end filtration. Increasing pressure on the surface pushes the particles to be trapped in pores and adsorbed to the membrane due to association with the membrane [17]. Moreover, a schematic of the four typical fouling models is illustrated in Figure S1a-d (Supplementary Documents).…”

Section: Model Developmentmentioning

confidence: 99%

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Evaluation of Organic and Inorganic Foulant Interaction Using Modified Fouling Models in Constant Flux Dead-End Operation with Microfiltration Membranes

Qasim,

Akbar,

Khan

et al. 2023

Membranes

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The goal of this study was to elucidate the interaction of complex feed solutions under modified membrane fouling models for constant flux operation. The polyvinylidene fluoride membrane (PVDF) was tested for three types of solutions containing inorganic foulants (Al, Mn, and Fe), organic foulants, and suspended solids at 0.5 mM Ca2+ ionic strength. The membrane’s performance was evaluated by measuring the increase in transmembrane pressure (TMP) during two different filtration scenarios: continuous filtration lasting 1 h and cyclic filtration lasting 12 min, with 3 min backwashing cycles included. Statistical analysis (linear regression results (R2), p-value) was used to verify the fouling model propagation along with the determination of the contributing constant of each fouling model. An increasing TMP percentage of 164–302%, 155–300%, and 208–378% for S1 (HA + Ca2+), S2 (inorganics + kaolin + Ca2+), and S3 (HA + inorganics + kaolin + Ca2+) was recorded for 1 h filtration, respectively. Furthermore, a five percent increase in irreversible resistance was noted for the S3 solution due to the strong adsorption potential of foulants for the PVDF membrane caused by the electrostatic and hydration forces of foulants. In addition to that, the participation equation elucidated the contribution of the fouling model and confirmed that complete blocking and cake layer contribution were dominant for the S1 and S3 solutions, while standard blocking was dominant for the S2 solution with a high significance ratio. Moreover, R2 and cyclic filtration analysis also confirmed the propagation of these fouling models. The statistical confirmation and regression results analysis of the modified model gave comparative results and satisfied the filtration mechanism and can be used for the constant flux dead filtration analysis of water treatment.

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Section: Introductionmentioning

confidence: 67%

Section: Model Developmentmentioning

confidence: 99%

Evaluation of Organic and Inorganic Foulant Interaction Using Modified Fouling Models in Constant Flux Dead-End Operation with Microfiltration Membranes

Qasim,

Akbar,

Khan

et al. 2023

Membranes

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“…For potable reuse application, the cleaning can be scheduled as frequently as once per day to once per month, depending on the quality of wastewater that need to be treated. In general, a clean-in-place (CIP) practice means the cleaning was carried out when the membrane modules remained within the membrane unit (in situ) [110]. A high velocity of cleaning solution is re-circulated through the membrane system at elevated temperature to create scouring action and to enhance the foulant's solubility.…”

Section: Fouling Type Chemical Cleaning and Findings Refmentioning

confidence: 99%

A Review on the Use of Membrane Technology Systems in Developing Countries

et al. 2021

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Fulfilling the demand of clean potable water to the general public has long been a challenging task in most developing countries due to various reasons. Large-scale membrane water treatment systems have proven to be successful in many advanced countries in the past two decades. This paves the way for developing countries to study the feasibility and adopt the utilization of membrane technology in water treatment. There are still many challenges to overcome, particularly on the much higher capital and operational cost of membrane technology compared to the conventional water treatment system. This review aims to delve into the progress of membrane technology for water treatment systems, particularly in developing countries. It first concentrates on membrane classification and its application in water treatment, including membrane technology progress for large-scale water treatment systems. Then, the fouling issue and ways to mitigate the fouling will be discussed. The feasibility of membrane technologies in developing countries was then evaluated, followed by a discussion on the challenges and opportunities of the membrane technology implementation. Finally, the current trend of membrane research was highlighted to address future perspectives of the membrane technologies for clean water production.

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“…However, the major weakness remains in membrane fouling (Asif & Zhang, 2021), resulting in high operational cost and frequent membrane replacement (Moneer, 2023; Nabi et al, 2023; Osman & Hodaifa, 2023; Sanchez et al, 2023). The common cleaning methods of ceramic membranes include membrane modification, hydraulic backwashing, and chemical reagent cleaning (Chapalaghi et al, 2022; Khan & Kim, 2023; Ninomiya et al, 2020; Sakamoto et al, 2022). In recent years, many new membrane cleaning methods have been developed, such as external electric field assisted cleaning, H 2 O 2 ‐MnO 2 system (He et al, 2019), and nano‐microbubble enhanced cleaning.…”

Section: Introductionmentioning

confidence: 99%

Study on efficiency and mechanism of ultrasonic controlling membrane fouling in ceramic membrane bioreactors

Ren,

Zhang,

Liu

et al. 2024

Water Environment Research

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In recent years, ceramic membranes have been increasingly used in membrane bioreactors (MBRs). However, membrane fouling was still the core issue restricting the large‐scale engineering application of ceramic MBRs. As a novel and alternative technology, ultrasonic could be used to control membrane fouling. This research focused on the efficiency and mechanism of ultrasonic controlling membrane fouling in ceramic MBRs. The results showed that ultrasonic reduced the sludge concentration in MBR, and the average particle size of sludge was always in a high range. The sludge activity of the system was stable at 6–9 (mg O2·(g MLSS·h)−1), indicating that ultrasonic did not destroy the activity of microorganisms in the system. The extracellular polymer substance (EPS) of the ultrasonic group was slightly higher than that of the control group, while the soluble microbial product (SMP) content was relatively stable. The ceramic membrane of the ultrasonic group has a partial retention effect on the organic components. The application of ultrasonic slowed down the decrease of the hydrophilicity of the ceramic membrane. The main pollutants on the membrane surface exist in the form of aromatic and heteroaromatic rings, alkynes, and so forth. Ultrasonic removes the amide substances from the membrane surface. Membrane fouling resistance is mainly due to membrane pore blockage, accounting for 75.53%.Practitioner Points Enrich the research on the mechanism of ultrasonic technology in membrane fouling control. The MBR can still operate normally with ultrasonic applied. The time for the ceramic membrane to reach the fouling end point is 2.4 times that without ultrasonic. The main cause of membrane fouling was pore blocking, accounting for 75.53%.

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Identification of scaling during clean-in-place (CIP) in membrane water treatment process

Cited by 21 publications

References 45 publications

Evaluation of Organic and Inorganic Foulant Interaction Using Modified Fouling Models in Constant Flux Dead-End Operation with Microfiltration Membranes

Evaluation of Organic and Inorganic Foulant Interaction Using Modified Fouling Models in Constant Flux Dead-End Operation with Microfiltration Membranes

A Review on the Use of Membrane Technology Systems in Developing Countries

Study on efficiency and mechanism of ultrasonic controlling membrane fouling in ceramic membrane bioreactors

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