Remediating biofouling of reverse osmosis membranes Metadata

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Title

  • Main Title Remediating biofouling of reverse osmosis membranes

Creator

  • Author: Siler, J. L.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: DOE; USDOE, Washington, DC (United States)

Publisher

  • Name: Westinghouse Savannah River Company
    Place of Publication: Aiken, South Carolina
    Additional Info: Westinghouse Savannah River Co., Aiken, SC (United States)

Date

  • Creation: 1991-10-22

Language

  • English

Description

  • Content Description: Several potential additives and the use of influent pH adjustment were examined to remediated the biofouling problem of the ETF reverse osmosis (RO) system. Tests were conducted with simulated RO feed containing salt, metal hydroxides and bacteria. The addition of sodium hexametaphosphate (SHMP), sodium bisulfite, and adjusting the influent pH to 3 were each successful in reducing the RO biofouling. Little or no benefit was found from the use of a biofilm remover (Filmtec Alkaline Cleaner) or the use of surfactants (Surfynol or sodium lauryl sulfate). In addition, Surfynol use resulted in irreversible fouling and necessitated membrane replacement. At the water recoveries used in the ETF (>90%), sodium bisulfite addition resulted in the recovery of 70--90% of the flux and almost complete restoration of the DF to prefouled conditions. Based on the bench-scale tests completed, IWT would recommend that sodium bisulfite addition be tested at the ETF. This testing would involve optimizing the amount of bisulfite required. In addition, it is recommended that the addition of SHMP or influent pH adjustment be evaluated since the relative differences in labscale tests were small and scale-up effects could be present. The ETF operating permit allows each to be added.
  • Physical Description: 8 pages

Subject

  • Keyword: Us Aec
  • Keyword: Biological Fouling
  • Keyword: Sodium Phosphates
  • Keyword: Alkali Metal Compounds
  • Keyword: Fouling
  • Keyword: Phosphorus Compounds
  • Keyword: Ph Value
  • Keyword: Diffusion
  • Keyword: Microorganisms
  • Keyword: Bacteria
  • Keyword: Us Erda
  • Keyword: Additives
  • Keyword: Membranes
  • Keyword: Us Organizations 420200* -- Engineering-- Facilities, Equipment, & Techniques
  • Keyword: Osmosis
  • Keyword: Savannah River Plant
  • Keyword: Phosphates
  • Keyword: Sulfites
  • Keyword: Oxygen Compounds
  • Keyword: National Organizations
  • Keyword: Us Doe
  • STI Subject Categories: 42 Engineering
  • Keyword: Sodium Compounds
  • Keyword: Sulfur Compounds

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE92019345
  • Report No.: WSRC-RP-91-1059
  • Grant Number: AC09-89SR18035
  • DOI: 10.2172/7279109
  • Office of Scientific & Technical Information Report Number: 7279109
  • Archival Resource Key: ark:/67531/metadc1443083

Note

  • Display Note: OSTI; NTIS; INIS; GPO Dep.
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