Water softening process
Abstract
This invention involves an improved process for softening hard water which comprises selectively precipitaing CaCO.sub.3 to form a thin layer thereof, increasing the pH of said water to precipitate magnesium as magnesium hydroxide and then filtering the resultant slurry through said layer. The CaCO.sub.3 layer serves as a thin permeable layer which has particularly useful application in cross-flow filtration applications.
- Inventors:
-
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 862620
- Patent Number(s):
- 3976569
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- water; softening; process; involves; improved; hard; comprises; selectively; precipitaing; caco; form; layer; increasing; ph; precipitate; magnesium; hydroxide; filtering; resultant; slurry; serves; permeable; particularly; useful; application; cross-flow; filtration; applications; layer serves; improved process; particularly useful; useful application; magnesium hydroxide; permeable layer; cross-flow filtration; /210/
Citation Formats
Sheppard, John D, and Thomas, David G. Water softening process. United States: N. p., 1976.
Web.
Sheppard, John D, & Thomas, David G. Water softening process. United States.
Sheppard, John D, and Thomas, David G. Thu .
"Water softening process". United States. https://www.osti.gov/servlets/purl/862620.
@article{osti_862620,
title = {Water softening process},
author = {Sheppard, John D and Thomas, David G},
abstractNote = {This invention involves an improved process for softening hard water which comprises selectively precipitaing CaCO.sub.3 to form a thin layer thereof, increasing the pH of said water to precipitate magnesium as magnesium hydroxide and then filtering the resultant slurry through said layer. The CaCO.sub.3 layer serves as a thin permeable layer which has particularly useful application in cross-flow filtration applications.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1976},
month = {Thu Jan 01 00:00:00 EST 1976}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.