A coagulation–powdered activated carbon–ultrafiltration – Multiple barrier approach for removing toxins from two Australian cyanobacterial blooms

Dixon, Mike B.; Richard, Yann; Ho, Lionel; Chow, Christopher W.K.; O’Neill, Brian K.; Newcombe, Gayle

doi:10.1016/j.jhazmat.2010.12.049

Cited by 71 publications

(18 citation statements)

References 39 publications

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“…These results indicate that PAC addition increased the removal of MC-LR, and PAC/UF process can effectively control the concentration of MC-LR in the ultrafiltration effluent. The result was in consistent with Margarida [26] and Dixon et al [27], who found that PAC could effectively absorb the MC-LR molecule. Moreover, the removal of MC-LR for the PAC/UF process was about 65% at the end of the experiment, mostly owing to the biological function.…”

Section: Mc-lr Removalsupporting

confidence: 90%

Fouling control of PAC/UF process for treating algal-rich water

Liu¹,

Li²,

Yang³

et al. 2015

Desalination

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Section: Mc-lr Removalsupporting

confidence: 90%

Fouling control of PAC/UF process for treating algal-rich water

Liu¹,

Li²,

Yang³

et al. 2015

Desalination

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“…Some researchers have reported that PAC was ineffective at reducing membrane fouling despite it enhancing the removal of micromolecular NOM [13,[17][18][19], and regardless of the NOM characteristics (hydrophobicity and protein content) and inorganic content of the water [20]. Alternatively, some researchers have found that PAC can improve membrane flux [13,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, some authors have recognized the potential benefits of a combined coagulation and PAC adsorption process before membrane filtration [33]; however, in these cases the membrane operation process lasted for only 30 min [12], or less than 5 h [17]. Matsui et al [34] found that both physically reversible and irreversible membrane fouling were reduced by a combination of PAC and polyaluminum chloride (PACl) pretreatment, because of a high NOM removal and the formation of larger and more porous flocs.…”

Section: Introductionmentioning

confidence: 99%

Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling

et al. 2014

Journal of Membrane Science

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a b s t r a c tPre-coagulation by alum before ultrafiltration without (CUF) and with (CAUF) powdered activated carbon (PAC) addition was investigated to explore the influence of PAC on membrane fouling. It was found that the continuous addition of a low dosage of PAC reduced membrane fouling for operational run periods o20 days, both for reversible and for irreversible components of fouling. The presence of PAC increased the removal of dissolved organic matter (DOM), particularly proteinaceous substances, and some fractions of humic-type substances. For a longer operation time (420 days) an increase in mainly reversible fouling was evident and was attributed to microorganism growth in the cake layer, as indicated by the enhanced concentrations of extracellular polymeric substances, such as polysaccharides and proteins. A process of crystallization of the coagulant floc in the cake layer with increasing operation time was believed to cause desorption of DOM from primary coagulation particles and a decrease in their size, and consequently a higher density of cake layer. PAC absorption of desorbed DOM within the cake layer, and residual DOM after coagulation, reduced DOM reaching the membrane surface and the extent of subsequent internal membrane fouling.Crown

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“…Application of sludge recycling instead of directly discharging could take full advantage of the sludge for improving the performance of drinking water treatment [10]. Sludge recycling is a practice known in the wastewater treatment field, since sludge has been proven to be capable of purifying water [11].…”

Section: Introductionmentioning

confidence: 99%

A Pilot Study of the Sludge Recycling Enhanced Coagulation–Ultrafiltration Process for Drinking Water: The Effects of Sludge Recycling Ratio and Coagulation Stirring Strategy

Liu

Guo

et al. 2017

Water

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Abstract:The pilot-scale study on a sludge recycling enhanced coagulation-ultrafiltration (UF) process for surface water treatment is investigated in this paper. The impact of the sludge recycling ratio and coagulation stirring strategy on removal, sedimentation efficiency, and membrane fouling control was studied in this work. Sludge recycling ratios of 0%, 5%, 10%, 15%, and 20% were applied, and the optimal ratio was found to be 10%. Moreover, four stirring strategies were also applied, and the best stirring strategy for coagulation was found to be rapid mixing (velocity gradient: 280 s −1 ), which is quite different from the coagulation stirring strategy without sludge recycling. This suggests that the adsorption effect of sludge could play a leading role during the procedure. Moreover, shortening the coagulation process makes it possible to reduce energy consumption.

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A coagulation–powdered activated carbon–ultrafiltration – Multiple barrier approach for removing toxins from two Australian cyanobacterial blooms

Cited by 71 publications

References 39 publications

Fouling control of PAC/UF process for treating algal-rich water

Fouling control of PAC/UF process for treating algal-rich water

Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling

A Pilot Study of the Sludge Recycling Enhanced Coagulation–Ultrafiltration Process for Drinking Water: The Effects of Sludge Recycling Ratio and Coagulation Stirring Strategy

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