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Filter media rehabilitation at a lime softening plant

Sr., James R. Mayhugh / Smith, John A. / Elder, Douglas B. / Logsdon, Gary S.

Treating filter media with glacial acetic acid proved an effective alternative to media removal and replacement at a lime‐softening plant.

Water filtration plants treating surface water sources can be expected to routinely produce finished water of excellent quality when the source water quality remains steady or changes slowly. When the quality of the source water changes drastically over short periods, however, treatment plants may face severe challenges. Such a situation occurred at the Decatur, Ill., South Water Treatment Plant early in 1994. After a high‐turbidity episode, the lime‐softening plant experienced buildup of coagulant and calcium carbonate deposits in the filter beds. The filters and the deposits were evaluated, and an in situ filter media cleaning technique was successfully applied, using glacial acetic acid.

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Filter media rehabilitation at a lime softening plant

Sr., James R. Mayhugh / Smith, John A. / Elder, Douglas B. / Logsdon, Gary S.

Treating filter media with glacial acetic acid proved an effective alternative to media removal and replacement at a lime‐softening plant.

Water filtration plants treating surface water sources can be expected to routinely produce finished water of excellent quality when the source water quality remains steady or changes slowly. When the quality of the source water changes drastically over short periods, however, treatment plants may face severe challenges. Such a situation occurred at the Decatur, Ill., South Water Treatment Plant early in 1994. After a high‐turbidity episode, the lime‐softening plant experienced buildup of coagulant and calcium carbonate deposits in the filter beds. The filters and the deposits were evaluated, and an in situ filter media cleaning technique was successfully applied, using glacial acetic acid.

Filter media rehabilitation at a lime softening plant

Sr., James R. Mayhugh / Smith, John A. / Elder, Douglas B. / Logsdon, Gary S.

Treating filter media with glacial acetic acid proved an effective alternative to media removal and replacement at a lime‐softening plant.

Water filtration plants treating surface water sources can be expected to routinely produce finished water of excellent quality when the source water quality remains steady or changes slowly. When the quality of the source water changes drastically over short periods, however, treatment plants may face severe challenges. Such a situation occurred at the Decatur, Ill., South Water Treatment Plant early in 1994. After a high‐turbidity episode, the lime‐softening plant experienced buildup of coagulant and calcium carbonate deposits in the filter beds. The filters and the deposits were evaluated, and an in situ filter media cleaning technique was successfully applied, using glacial acetic acid.

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Title:

Filter media rehabilitation at a lime softening plant

Contributors:

Sr., James R. Mayhugh (author) / Smith, John A. (author) / Elder, Douglas B. (author) / Logsdon, Gary S. (author)

Published in:

Journal ‐ American Water Works Association ; 88 ; 64-69

Publication date:

1996-08-01

Size:

6 pages

ISSN:

1551-8833 , 0003-150X

DOI:

https://doi.org/10.1002/j.1551-8833.1996.tb06600.x

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Treatment Plants , Calcium Carbonate , Turbidity , Filtration , Coagulants , Filter Media , Cleaning , Lime

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