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Title: Process for removing metals from water

Abstract

A process for removing metals from water including the steps of prefiltering solids from the water, adjusting the pH to between about 2 and 3, reducing the amount of dissolved oxygen in the water, increasing the pH to between about 6 and 8, adding water-soluble sulfide to precipitate insoluble sulfide- and hydroxide-forming metals, adding a flocculating agent, separating precipitate-containing floc, and postfiltering the resultant solution. The postfiltered solution may optionally be eluted through an ion exchange resin to remove residual metal ions.

Inventors:
 [1];  [1];  [2]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Issue Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
866885
Patent Number(s):
4814091
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; removing; metals; water; including; steps; prefiltering; solids; adjusting; ph; reducing; amount; dissolved; oxygen; increasing; adding; water-soluble; sulfide; precipitate; insoluble; sulfide-; hydroxide-forming; flocculating; agent; separating; precipitate-containing; floc; postfiltering; resultant; solution; postfiltered; optionally; eluted; exchange; resin; remove; residual; metal; removing metals; removing metal; forming metal; dissolved oxygen; remove residual; exchange resin; moving metal; adding water; resultant solution; water including; forming metals; /210/

Citation Formats

Napier, John M., Hancher, Charles M., and Hackett, Gail D. Process for removing metals from water. United States: N. p., 1989. Web.
Napier, John M., Hancher, Charles M., & Hackett, Gail D. Process for removing metals from water. United States.
Napier, John M., Hancher, Charles M., and Hackett, Gail D. Sun . "Process for removing metals from water". United States. https://www.osti.gov/servlets/purl/866885.
@article{osti_866885,
title = {Process for removing metals from water},
author = {Napier, John M. and Hancher, Charles M. and Hackett, Gail D.},
abstractNote = {A process for removing metals from water including the steps of prefiltering solids from the water, adjusting the pH to between about 2 and 3, reducing the amount of dissolved oxygen in the water, increasing the pH to between about 6 and 8, adding water-soluble sulfide to precipitate insoluble sulfide- and hydroxide-forming metals, adding a flocculating agent, separating precipitate-containing floc, and postfiltering the resultant solution. The postfiltered solution may optionally be eluted through an ion exchange resin to remove residual metal ions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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