Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing
Filtration behaviors of sewage secondary effluent pretreated with flocculant were studied under constant filtration rate condition using ceramic microfiltration membranes. The process consisted of the periodic operations of the filtration (fouling) and backwashing (cleaning) cycles. The system was c...
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The Society of Powder Technology, Japan
2004
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my.iium.irep.423542015-03-24T03:41:30Z http://irep.iium.edu.my/42354/ Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing Jami, Mohammed Saedi Ohn, Than Iritani, Eiji Mukai, Yasuhito Katagiri, Nobuyuki TP155 Chemical engineering Filtration behaviors of sewage secondary effluent pretreated with flocculant were studied under constant filtration rate condition using ceramic microfiltration membranes. The process consisted of the periodic operations of the filtration (fouling) and backwashing (cleaning) cycles. The system was capable of selecting two modes of membrane backwashing, i. e., physical backwashing or chemically enhanced backwashing. The time dependency of pressure drop across the filter cake in an operating cycle mainly due to the cake build-up was well described by the constant rate filtration equation for the compressible filter cake, and the increase with the cycle number in pressure drop across the membrane mainly due to the pore blocking was adequately correlated by the intermediate blocking law. Our experimental data clearly showed that the combined operation of physical and chemically enhanced backwashing was highly effective for the filtration of sewage secondary effluent when accompanied by the flocculation operation. The increased dosage of flocculant substantially reduced the cake resistance and irreversible pore plugging. Particularly, less frequent physical backwashing by addition of flocculant led to an increase in the average filtration rate. The Society of Powder Technology, Japan 2004-07-23 Article REM application/pdf en http://irep.iium.edu.my/42354/1/41_798.pdf Jami, Mohammed Saedi and Ohn, Than and Iritani, Eiji and Mukai, Yasuhito and Katagiri, Nobuyuki (2004) Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing. Journal of the Society of Powder Technology, Japan , 41 (11). pp. 798-805. ISSN 0386-6157 https://www.jstage.jst.go.jp/article/sptj1978/41/11/41_11_798/_article |
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TP155 Chemical engineering Jami, Mohammed Saedi Ohn, Than Iritani, Eiji Mukai, Yasuhito Katagiri, Nobuyuki Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing |
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Filtration behaviors of sewage secondary effluent pretreated with flocculant were studied under constant filtration rate condition using ceramic microfiltration membranes. The process consisted of the periodic operations of the filtration (fouling) and backwashing (cleaning) cycles. The system was capable of selecting two modes of membrane backwashing, i. e., physical backwashing or chemically enhanced backwashing. The time dependency of pressure drop across the filter cake in an operating cycle mainly due to the cake build-up was well described by the constant rate filtration equation for the compressible filter cake, and the increase with the cycle number in pressure drop across the membrane mainly due to the pore blocking was adequately correlated by the intermediate blocking law. Our experimental data clearly showed that the combined operation of physical and chemically enhanced backwashing was highly effective for the filtration of sewage secondary effluent when accompanied by the flocculation operation. The increased dosage of flocculant substantially reduced the cake resistance and irreversible pore plugging. Particularly, less frequent physical backwashing by addition of flocculant led to an increase in the average filtration rate. |
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Article |
author |
Jami, Mohammed Saedi Ohn, Than Iritani, Eiji Mukai, Yasuhito Katagiri, Nobuyuki |
author_facet |
Jami, Mohammed Saedi Ohn, Than Iritani, Eiji Mukai, Yasuhito Katagiri, Nobuyuki |
author_sort |
Jami, Mohammed Saedi |
title |
Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing |
title_short |
Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing |
title_full |
Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing |
title_fullStr |
Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing |
title_full_unstemmed |
Filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing |
title_sort |
filtration behaviors in constant-rate microfiltration of flocculated sewage secondary effluent accompanied with combined operation of physical and chemically enhanced backwashing |
publisher |
The Society of Powder Technology, Japan |
publishDate |
2004 |
url |
http://irep.iium.edu.my/42354/1/41_798.pdf http://irep.iium.edu.my/42354/ https://www.jstage.jst.go.jp/article/sptj1978/41/11/41_11_798/_article |
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