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Final pretreatment filters for reverse osmosis desalination

Cartier, P.G. / Rowe, R.R.

The objective of this research was to demonstrate that filter media containing ultrafine ion exchange resins (UFIER) can reduce the SDI of municipally treated surface water to 3 or less and serve as a final filter to protect RO membranes. The feasibility of using UFIER floc as a 'bound flocculant' was demonstrated on a small commercial precoat filtratopm system. Further testing is recommended on two specific precoat compositions (a low SDI/short run and a moderate SDI/long run) to determine if the results on Philadelphia city water are reproducible using other feeds. A supplier of diatomaceous earth precoat filters for pretreating RO feed would be an appropriate choice for this testing.

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Final pretreatment filters for reverse osmosis desalination

Cartier, P.G. / Rowe, R.R.

The objective of this research was to demonstrate that filter media containing ultrafine ion exchange resins (UFIER) can reduce the SDI of municipally treated surface water to 3 or less and serve as a final filter to protect RO membranes. The feasibility of using UFIER floc as a 'bound flocculant' was demonstrated on a small commercial precoat filtratopm system. Further testing is recommended on two specific precoat compositions (a low SDI/short run and a moderate SDI/long run) to determine if the results on Philadelphia city water are reproducible using other feeds. A supplier of diatomaceous earth precoat filters for pretreating RO feed would be an appropriate choice for this testing.

Final pretreatment filters for reverse osmosis desalination

Cartier, P.G. / Rowe, R.R.

The objective of this research was to demonstrate that filter media containing ultrafine ion exchange resins (UFIER) can reduce the SDI of municipally treated surface water to 3 or less and serve as a final filter to protect RO membranes. The feasibility of using UFIER floc as a 'bound flocculant' was demonstrated on a small commercial precoat filtratopm system. Further testing is recommended on two specific precoat compositions (a low SDI/short run and a moderate SDI/long run) to determine if the results on Philadelphia city water are reproducible using other feeds. A supplier of diatomaceous earth precoat filters for pretreating RO feed would be an appropriate choice for this testing.

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Title:

Final pretreatment filters for reverse osmosis desalination

Additional title:

Endstufen-Vorbehandlungsfilter fuer die Entsalzung mittels Umkehrosmose

Contributors:

Cartier, P.G. (author) / Rowe, R.R. (author)

Published in:

US Government Reports ; 1-98

Publication date:

1983

Size:

98 Seiten

Type of media:

Report

Type of material:

Print

Language:

English

Keywords:

UMKEHROSMOSE , IONENAUSTAUSCH , TRINKWASSERAUFBEREITUNG , HARZ , SANDFILTER , ANSCHWEMMFILTER , KIESELGUR

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