Process for removing metals from water

Title: Process for removing metals from water

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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 containing floc, and postfiltering the resultant solution. The postfiltered solution may optionally be eluted through an ion exchange resin to remove residual metal ions. 2 tabs.

Inventors:: Napier, J.M.; Hancher, C.M.; Hackett, G.D.

Issue Date:: 1987-06-29

Research Org.:: Oak Ridge National Lab., TN (USA)

OSTI Identifier:: 6874265

Patent Number(s):: -US-A6067073

Assignee:: TIC; EDB-88-177943

DOE Contract Number:: AC05-84OR21400

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; INDUSTRIAL WASTES; WATER TREATMENT; METALS; REMOVAL; FILTERS; FILTRATION; FLOCCULATION; INVENTIONS; ION EXCHANGE MATERIALS; OXYGEN; PH VALUE; SULFIDES; CHALCOGENIDES; ELEMENTS; MATERIALS; NONMETALS; PRECIPITATION; SEPARATION PROCESSES; SULFUR COMPOUNDS; WASTES 320305* -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management; 520200 -- Environment, Aquatic-- Chemicals Monitoring & Transport-- (-1989)

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                    Napier, J.M., Hancher, C.M., and Hackett, G.D. Process for removing metals from water.  United States: N. p., 1987. 
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                    Napier, J.M., Hancher, C.M., & Hackett, G.D. Process for removing metals from water.  United States.

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                    Napier, J.M., Hancher, C.M., and Hackett, G.D. Mon .  
        "Process for removing metals from water".  United States.

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@article{osti_6874265,

  title        = {Process for removing metals from water},

  author       = {Napier, J.M. and Hancher, C.M. and Hackett, G.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 containing floc, and postfiltering the resultant solution. The postfiltered solution may optionally be eluted through an ion exchange resin to remove residual metal ions. 2 tabs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {6}

}

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