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Effects of organics concentration on the gravity-driven membrane (GDM) filtration in treating iron- and manganese-containing surface water by Hailin Chang; Weiyi Sun; Yanrui Wang; Shu Jiang; Jinlong Wang; Heng Liang; Guibai Li; Xiaobin Tang is a Environmental Science article available to read on EtoBox.

What is Effects of organics concentration on the gravity-driven membrane (GDM) filtration in treating iron- and manganese-containing surface water about?

Iron and manganese contamination in the surface water is posing great challenges to the drinking water treatment supply, especially in the complex cases of organics involvement. Gravity-driven membrane (GDM) filtration equipped with the dual functions of ultrafiltration and biocake layer, conferred promising potentials in the removals of iron and manganese. This study evaluated the effects of organics concentrations on the removal performance of iron and manganese, as well as on the flux stabilization during GDM long-term filtration. The results indicated that stable flux level and the removal efficiency of manganese initially increased with the increase of organics concentration in the feed water, and then decreased. The moderate concentration of organic compounds in the feed water would positively facilitate the microbial activities and benefit to engineering a heterogeneous and porous biocake layer on the membrane surface, contributing to the highest improvements of stable flux (6.3 L m h), while high concentration of organic compounds in the feed water would result in the increase in the thickness and EPS concentration of the biocake layer, leading to a flux reduction. Furtherm

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Author

Hailin Chang; Weiyi Sun; Yanrui Wang; Shu Jiang; Jinlong Wang; Heng Liang; Guibai Li; Xiaobin Tang

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)