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Nanofiltration foulants from a treated water surface

Article Abstract:

Investigations into the nature of nanofiltration foulants showed that the film of foulants is of biological in nature and can be prevented more successfully by feedwater pretreatment than chemical cleaning of the fouled membrane. Studies showed that the film can only be removed by alkaline/detergent cleaning and that flux can be restored without removing the film by the pretreatment of feedwater to reduce the chances of microbial growth.

Author: Summers, R. Scott, Speth, Thomas F., Gusses, Alison M.
Publisher: American Chemical Society
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
Research & development outlays, Ecological Sciences, Pollutants produced & recycled, Environmental sciences, Water treatment plants, Filters (Separation), Membrane filters

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Nonofiltration foulants from a treated surface water

Article Abstract:

A study of nanofiltration foulants found that pretreatment of surface water fouled with mainly biological matter could produce better results than simply using chemical cleaning techniques on the membrane. The prevention of the deposition of the cells in feedwater can be obtained by pretreatment. Chemical treatment seemed to cause morphological changes in the biofilm while failing to reduce its thickness.

Author: Summers, R. Scott, Speth, Thomas F., Gusses, Alison M.
Publisher: American Chemical Society
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
Pollution Control R&D, Water, Pollution control research, Membrane separation, Filtration

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Impact of temperature on drinking water biofilter performance and microbial community structure

Article Abstract:

Temperature differences have been attributed to differences in seasonal changes in removal of natural organic matter (NOM) by drinking water biofilters. Bench-scale sand biofilters treating NOM isolated from a surface water source were operated in parallel at 5, 20, and 35 degrees C to isolate the effect of temperature from other parameters.

Author: Moll, Deborah M., Summers, R. Scott, Fonseca, Ana C., Matheis, Wolfgang
Publisher: American Chemical Society
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1999
Other Commercial and Service Industry Machinery Manufacturing, Service industry machinery, not elsewhere classified, Industrial Water Filters, Science and technology policy, Industrial equipment industry, Water filters, Water purification equipment and supplies industry, Water treatment equipment industry, Filter industry

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Subjects list: Research, United States, Environmental aspects
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