Title

Microfiltration productivity and water quality in relation to pretreatment, temperature and flux

Authors

Authors

J. S. Taylor; C. Robert; W. A. Lovins; S. Chen; K. Kopp;N. Kothari

Comments

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Abbreviated Journal Title

J. Water Serv. Res. Technol.-Aqua

Keywords

Engineering, Civil; Water Resources

Abstract

Microfiltration was evaluated as a water treatment process using the 60 gpm (3.8 L/s) Memtec pilot plant in Manitowoc, WI, USA. The pilot plant operated for over six months. Productivity as measured by mass transfer coefficient (MTC) decline and water quality, as measured by turbidity, particles and coliform rejection were evaluated for microfiltration with no pretreatment, microfiltration with alum addition and microfiltration with PAC addition in the pilot plant study. The effects of temperature on microfilter fouling were evaluated by model development and data collection. Alum addition relative to PAC addition or conventional pretreatment increased the run-time from 10 days to 30 days at 50 gfd (85 L/hm(2)) and 25 degrees C. Turbidity, particle and coliform rejection was independent of pretreatment. Run-time between chemical cleanings increased with decreasing flux and increasing temperature. Log rejection of turbidity and particles increased with increasing concentration. Infinite log rejection of coliforms was observed for a 1-2 log feed stream concentration.

Journal Title

Journal of Water Services Research and Technology-Aqua

Volume

48

Issue/Number

5

Publication Date

1-1-1999

Document Type

Article

Language

English

First Page

191

Last Page

200

WOS Identifier

WOS:000083211800003

ISSN

0003-7214

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