Effect of feedwater pre-treatment using UV/H 2 O 2 for mitigating the fouling of a ceramic MF membrane caused by soluble algal organic matter

Ferrous iron/peroxymonosulfate oxidation as a pretreatment for ceramic ultrafiltration membrane: Control of natural organic matter fouling and degradation of atrazine

“…It was generally considered that natural organic matter (NOM, mainly including humic-like substances, polysaccharides, proteins, and lipids) was still one of the most problematic membrane foulants (Guo et al, 2009;Yuan and Zydney, 2000). Among various NOM fractions, the high molecular weight (MW) biopolymers such as proteinaceous substances and polysaccharides were identified as the main NOM components for UF membrane fouling (Zhang et al, 2015a). Some typically possible mechanisms were regarded as contributors to membrane fouling, including the formation of loose cake layer and impermeable gel layer, pore blocking and pore narrowing due to adsorption of organic matter (Qu et al, 2012;Zhang et al, 2015b).…”

Treatment of secondary effluent with biological activated carbon to reduce fouling of microfiltration membranes caused by algal organic matter from Microcystis aeruginosa

“…No microcystin remained after MF of the BAC-treated samples. Removal of the microcystin by the membrane was likely due to the accumulation of organic compounds in the AOM on/in the membrane forming a barrier to their passage through the membrane [28]. Zhang et al [28] also conducted a control filtration test with microcystin only in tap water and reported that MF did not reject the microcystin.…”

“…Removal of the microcystin by the membrane was likely due to the accumulation of organic compounds in the AOM on/in the membrane forming a barrier to their passage through the membrane [28]. Zhang et al [28] also conducted a control filtration test with microcystin only in tap water and reported that MF did not reject the microcystin. They confirmed that the retention of microcystin due to interaction between AOM and microcystin was unlikely as there was no microcystin rejection during the first 5 min of filtration after which the rejection started to increase with filtration time.…”

Moringa oleifera coagulation as pretreatment prior to microfiltration for membrane fouling mitigation

“…18 The effectiveness of coagulation pretreatment with alum or ferric chloride to mitigate MF membrane fouling has been demonstrated in the literature. 19,20 The reduced membrane fouling can be attributed to coagulation process capable of removing suspended solids and dissolved organic matter. 21 Although alum and ferric coagulation have been successfully used as a membrane fouling mitigation technique in drinking water treatment, the use of these heavy metal coagulants may be inappropriate in some developing countries due to the unaffordable high costs of imported chemicals 6 and MO coagulation can be an alternative pretreatment.…”