Comparison of reverse osmosis membrane fouling characteristics in full-scale leachate treatment systems with chemical coagulation and microfiltration pre-treatments

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Weerapong RukapanC Chiemchaisri

Abstract

Fouling characteristics of reverse osmosis (RO) membrane with chemical coagulation and microfiltration (MF) pre-treatment were investigated at full-scale leachate treatment systems. In chemical coagulation pre-treatment, solid separation from stabilized leachate was performed by ferric chloride coagulation followed by sand filtration. Meanwhile, MF pre-treatment and the RO system utilized direct filtration using a 0.03 µm membrane without chemical addition. MF pre-treatment yielded better pollutant removals in terms of organics and nitrogen. The study on effect of pre-treatment on RO membrane fouling revealed that accumulated foulant on the RO membrane in MF pre-treatment was significantly lower than that of chemical coagulation. Nevertheless, NaOH cleaning of the fouled RO membrane after chemical coagulation pre-treatment could better recover its permeate flux, thus suggesting that the formation of a loose-structure cake layer by chemical coagulation pre-treatment could allow effective penetration of chemical cleaning and detachment of foulant layer from the membrane surface.

References

Nov 30, 2005·Journal of Hazardous Materials·Tonni Agustiono KurniawanGilbert Y S Chan
Nov 13, 2007·Journal of Hazardous Materials·S RenouP Moulin
Dec 17, 2011·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Weerapong RukapanThirdpong Srisukphun
Jul 17, 2013·Journal of Hazardous Materials·Güçlü InselBülent Keskinler

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Citations

Mar 10, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Akintunde BabatundeGuoren Xu
Sep 11, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Lauren E BergmanJeanne M VanBriesen
Nov 27, 2018·Royal Society Open Science·Jinli LiYuan Zhong
Apr 7, 2021·Journal of Environmental Management·Yuri Abner Rocha LebronMíriam Cristina Santos Amaral
Sep 15, 2021·Environmental Science & Technology·Lingyue ZhangDongbei Yue

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