Ageing effect on chlorinated polyethylene membrane of an MBR caused by chemical cleaning procedures
作者： Paula Rocha da Costa , Aline Ribeiro Alkmin , Míriam Cristina Santos Amaral , Luzia Sergina de França Neta , Ana Cláudia Cerqueira
DOI: 10.1080/19443994.2014.943063
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摘要: AbstractThe membrane lifetime has a strong influence on the competitiveness and sustainability of Membrane bioreactor (MBR) technology. replacement is highly expensive operational cost MBR plants, besides generating residues that have been disposed at municipal landfills or incinerated. Chemical cleaning deemed to be one most significant factors shortens lifetime. required keep flux likely shortened due irreversible fouling. This work was aimed evaluate chemical agents chlorinated polyethylene polymeric membrane. Two procedures were evaluated, namely, (1) with citric acid followed by sodium hypochlorite (NaOCl) (2) oxalic hypochlorite. After each cycle, it determined permeability. The membranes also characterized surface analysis using scanning electron microscope, thermal resistance thermogra...
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