Assessing the role of feed water constituents in irreversible membrane fouling of pilot-scale ultrafiltration drinking water treatment systems

Peiris, Ramila H.; Jaklewicz, Magdalena; Budman, Hector; Legge, Raymond L.; Moresoli, Christine

doi:10.1016/j.watres.2013.03.015

Cited by 107 publications

(42 citation statements)

References 32 publications

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“…Using ferric chloride as a chemical coagulant, Tabatabai et al (Alizadeh Tabatabai et al, 2014) investigated the performance of coagulation on removal of algal organic matter (AOM) in seawater and concluded that coagulation substantially reduced fouling potential as well as the compressibility of the AOM cake/gel layer. Peiris et al (Peiris et al, 2013) found that polyaluminum chloride as a chemical coagulant could reduce hydraulically irreversible fouling caused by humic substances and protein-like matters. EC has been intensively studied recently as an unconventional pretreatment method (Den and Wang, 2008;Millar et al, 2014;Zhao et al, 2014).…”

Section: Pretreatment Technologiesmentioning

confidence: 99%

A review of reverse osmosis membrane fouling and control strategies

Jiang

Li²

2017

Science of The Total Environment

759

362

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Reverse osmosis (RO) membrane technology is one of the most important technologies for water treatment. However, membrane fouling is an inevitable issue. Membrane fouling leads to higher operating pressure, flux decline, frequent chemical cleaning and shorter membrane life. This paper reviews membrane fouling types and fouling control strategies, with a focus on the latest developments. The fundamentals of fouling are discussed in detail, including biofouling, organic fouling, inorganic fouling and colloidal fouling. Furthermore, fouling mitigation technologies are also discussed comprehensively. Pretreatment is widely used in practice to reduce the burden for the following RO operation while real time monitoring of RO has the advantage and potential of providing support for effective and efficient cleaning. Surface modification could slow down membrane fouling by changing surface properties such as surface smoothness and hydrophilicity, while novel membrane materials and synthesis processes build a promising future for the next generation of RO membranes with big advancements in fouling resistance. Especially in this review paper, statistical analysis is conducted where appropriate to reveal the research interests in RO fouling and control.Graphic Abstract

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Section: Pretreatment Technologiesmentioning

confidence: 99%

A review of reverse osmosis membrane fouling and control strategies

Jiang

Li²

2017

Science of The Total Environment

759

362

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“…1a). Previous studies have reported that EPS always cause severe membrane fouling due to the dense cake layer formed [34][35][36][37]. Therefore, the TMP significantly increased to 74.6 kPa at day 7 in the absence of flocs.…”

Section: Discussionmentioning

confidence: 87%

Synergistic process using Fe hydrolytic flocs and ultrafiltration membrane for enhanced antimony(V) removal

Wang

Liu

et al. 2017

Journal of Membrane Science

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A B S T R A C TAntimony (Sb) is harmful to human health, and Sb(V) is much more difficult to remove from water than other toxic elements such as arsenic (As). Theoretical studies have suggested that in situ flocs have stronger adsorption ability toward heavy metals than pre-made adsorbents. We believe that rational design of in situ flocs and the associated device structure will enable a floc-based device to be utilized in the removal of heavy metals. Based on this concept, we developed an integrated process taking advantage of the strong adsorption abilities of in-situ Al or Fe hydrolytic flocs and excellent separation properties of ultrafiltration (UF) membranes. We found that flocs could be well dispersed in a membrane tank with aeration from the bottom, and Fe-based flocs performed better in removing Sb(V) and alleviating membrane fouling than Al-based flocs. We also demonstrated that higher Sb (V) removal efficiency was induced with continuous injection, and lower solution pH. By controlling the aeration rate, injection frequency and the solution pH, membrane fouling was alleviated, especially under weakly acidic conditions. Additionally, owing to the higher rejection efficiency of the UF membrane, the effluent quality was improved, including the iron concentration, turbidity, and chromaticity. This innovative separation method shows promising potential for application in removing heavy metals in water treatment.

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“…The experimental data were collected over one year from July 2015 to July 2016. Although previous studies have reported humic substances to be a major foulant [11,12], Figure 7 shows that they were not removed by the BCF throughout the year; in contrast,~50% of the biopolymer was removed. Thus, it is clear that the decrease of filtration resistance by BCF treatment was due to the decrease of biopolymer concentration.…”

Section: Effect Of Bcf Pretreatment On Mf Membrane Foulingmentioning

confidence: 78%

Effect of Biological Contact Filters (BCFs) on Membrane Fouling in Drinking Water Treatment Systems

Hasegawa

Iwamoto

Miyoshi

et al. 2017

Water

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Membrane fouling is a serious problem in drinking water treatment systems. Biological contact filters (BCFs) are often used as a pretreatment to remove ammonia, dissolved organic matter (DOM), and metal ions such as iron and manganese. In this study, the effect of BCF as a pretreatment for membrane fouling was evaluated using a laboratory-scale mini module consisting of a mini BCF column and a mini MF column. Initially, it was confirmed that the main foulant was a biopolymer (at low concentration) in the raw water. Subsequently, the biopolymer concentrations in the BCF influent and effluent were measured with the excitation emission matrix (EEM) fluorescence spectroscopy and the liquid chromatograph organic carbon detector (LC-OCD). The fouling potential of the BCF influent and effluent was also measured to evaluate MF membrane fouling rate. The results demonstrate that application of the BCF reduced the biopolymer concentration of the effluent and reduced membrane fouling. The effect of BCF was also established in an actual drinking water treatment plant. It was found that optimizing the contact time of raw water with the BCF was crucial to reduce membrane fouling.

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Assessing the role of feed water constituents in irreversible membrane fouling of pilot-scale ultrafiltration drinking water treatment systems

Cited by 107 publications

References 32 publications

A review of reverse osmosis membrane fouling and control strategies

A review of reverse osmosis membrane fouling and control strategies

Synergistic process using Fe hydrolytic flocs and ultrafiltration membrane for enhanced antimony(V) removal

Effect of Biological Contact Filters (BCFs) on Membrane Fouling in Drinking Water Treatment Systems

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