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Membrane Fouling Mechanisms in Combined Microfiltration-Coagulation of Algal Rich Water Applying Ceramic Membranes

1
Graduate School of Water Resources, Sungkyunkwan University, Suwon 16419, Korea
2
POSCO E&C tower, 241, Incheon tower-daero, Yeonsu-gu, Incheon 22009, Korea
*
Authors to whom correspondence should be addressed.
Membranes 2019, 9(2), 33; https://doi.org/10.3390/membranes9020033
Received: 28 January 2019 / Revised: 15 February 2019 / Accepted: 19 February 2019 / Published: 22 February 2019
In this paper, we investigated the membrane fouling mechanism according to the coagulant dosage in algal rich water using a ceramic membrane. The algae that were used in this experiment were Microcystis sp. of cyanobacteria, and the fouling mechanism was analyzed through irrigation and filtration resistance through a constant flow operation. The experimental results showed that the filtration resistance decreased as the coagulant dosage increased, but the irreversibility at above optimum coagulant dosage increased. Additionally, as the coagulant dosage increased, the resistance value due to cake and adsorption contamination decreased, and membrane fouling by adsorption was dominant in comparison with cake fouling and adsorption fouling. The specific cake resistance was decreased as the coagulant dosage increased. The characteristics of the cake layer according to the coagulant dosage were found to loosely form the cake layer by increasing micro-size algae as the coagulant dosage increased. The results of this experiment confirmed the membrane fouling mechanism according to coagulant dosage when the ceramic membrane filtered algal rich water. View Full-Text
Keywords: algal-rich water; ceramic membrane; coagulation; membrane fouling; specific cake resistance algal-rich water; ceramic membrane; coagulation; membrane fouling; specific cake resistance
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Park, K.; Kim, P.; Kim, H.G.; Kim, J. Membrane Fouling Mechanisms in Combined Microfiltration-Coagulation of Algal Rich Water Applying Ceramic Membranes. Membranes 2019, 9, 33.

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