Influence of the characteristics of natural organic matter on the fouling of microfiltration membranes

Fan, Linhua; Harris, John L.; Roddick, Felicity; Booker, N. A.

doi:10.1016/s0043-1354(01)00183-x

Cited by 367 publications

(154 citation statements)

References 16 publications

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“…Through investigating the fouling behavior of natural water in three different types of MF and UF membranes, Yamamura et al [12] revealed that carbohydrates were dominant in the membrane foulants regardless of the types of membranes. Other researchers [13,14] considered that a high content of hydrophilic fraction or hydrophilic neutral fraction in the nature water caused serious flux decline, by using hydrophobic and hydrophilic MF and UF membranes on the NOM isolated from different surface water. However, all these studies focused on identifying the membrane organic foulants at the end of few filtration cycles in a batch or bench-scale system, which could cause the results of previous studies on the major foulants to be inconsistent since the organics accumulation on the membrane is a long-term process.…”

Section: Introductionmentioning

confidence: 99%

Investigation of organic foulants behavior on hollow-fiber UF membranes in a drinking water treatment plant

Xiao

Wang

et al. 2012

Separation and Purification Technology

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a b s t r a c tIn the present work, a ultrafiltration (UF) low pressure membrane (LPM) made of polyvinyl chloride (PVC) was used with an inline poly-ferric sulfate coagulation in a full scale drinking water treatment plant. The organic foulants and their accumulation behavior in the membrane filtration were investigated during a whole year operation. The evolutions of the surface morphology of the membranes were characterized by scanning electronic microscopy (SEM) and atomic force microscopy (AFM). The results revealed that the cake layer and pore blocked were responsible for the flux declining. Moreover, the roughness of the surface of the membranes continuously increased with the filtration. In order to identify the constitutes of organic foulants, attenuated total reflectance-fourier transform infrared spectroscopy (ATR-FTIR), high pressure size exclusion chromatography (HPSEC) and fluorescence excitation-emission matrix (EEM) spectrometry were used to examine the desorbed organic matters from the fouled membranes. The results showed that humic substances kept a very stable situation, indicating that it would not be important in the formation of the combined organic fouling layer. Protein/protein-like substances and soluble microbial product-like (SMP-like) substances were the dominant components in the organic fouling layer in a long-term ultrafiltration of surface water used as a drinking water source. A decrease of protein/protein-like substances and an increase of SMP-like substances with the filtration time were found, which could be attributed to the transition from proteins to SMP in the fouling layer. Thus, the increase of SMP-like substances in the fouling layer would play a significant role on the accumulation of irreversible fouling.

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Section: Introductionmentioning

confidence: 99%

Investigation of organic foulants behavior on hollow-fiber UF membranes in a drinking water treatment plant

Xiao

Wang

et al. 2012

Separation and Purification Technology

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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: 77%

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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“…Humic substances were not found to be important in the formation of the combined fouling layer [36]. And some other studies had showed that the concentration of SMP had a key role in membrane irreversible fouling, while humic substances were not found to be important in the formation of the combined fouling layer [38]. Effects of composition of AOM would be described in Section 3.3.…”

Section: Aeruginosa Chlorella Cyclotellamentioning

confidence: 98%

Influence of coagulation process on the ultrafiltration performance – The roles of Al species and characteristics of algae-laden water

Zhang

Wang

et al. 2017

Separation and Purification Technology

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a b s t r a c tThe aim of this study was to investigate the coagulation performances in different algal systems, and effects of algal morphology and composition of extracellular organic matter (EOM) on membrane flux were also investigated. The results indicated that Al 13 generated the largest flocs, and strength factor and recovery factor were also largest. The results of ultrafiltration experiments also showed that the floc size and the concentration of Soluble Microbial Products (SMP) may be the main decision factors in the membrane fouling process. Al species distribution was important in removing EOM in the coagulation process. SMP in EOM could be effectively removed by Al 13 and Al 30 , so the membrane fouling could be alleviated due to the larger removal efficiency of SMP. The roughness of the sediment layer formed by Al 13 was largest, and the sediment layer would adsorb and intercept more algae organic matter.

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Influence of the characteristics of natural organic matter on the fouling of microfiltration membranes

Cited by 367 publications

References 16 publications

Investigation of organic foulants behavior on hollow-fiber UF membranes in a drinking water treatment plant

Investigation of organic foulants behavior on hollow-fiber UF membranes in a drinking water treatment plant

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

Influence of coagulation process on the ultrafiltration performance – The roles of Al species and characteristics of algae-laden water

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