Cleaning and liquid contact with solids – Processes – Including regeneration – purification – recovery or separation...
Patent
1974-03-18
1976-08-10
Wyse, Thomas G.
Cleaning and liquid contact with solids
Processes
Including regeneration, purification, recovery or separation...
159 47WL, 134 10, 134109, 204238, 210 23H, 210 60, 210 73R, 210167, 210253, 210321R, B08B 704
Patent
active
039739872
ABSTRACT:
A water recycle treatment system comprising two main treatment sub-systems for treatment of contaminated water from a plurality of concentrated solutions and rinse baths to separate out the impurities therein. A first sub-system treats less concentrated solutions used for the rinse baths by channeling the flow therefrom to a first neutralizing tank which provides for pH control to produce a mixed output solution having a substantially constant pH factor, which is filtered to remove gross particles, the filtered solution being cooled in a holding tank and passed through a reverse osmosis process and carbon bed to produce clean water. The second sub-system treats highly concentrated solutions obtained from a plurality of chemical processes, mixes them in a second neutralizing tank which is utilized to produce a substantially constant pH output, which is fed to an evaporator to precipitate the metals and salts in sludge and also forms a water vapor output. The reverse osmosis waste is fed back into the second neutralizing tank and processed as noted above.
REFERENCES:
patent: 3243044 (1966-03-01), Moll
patent: 3436344 (1969-04-01), Canning et al.
patent: 3528901 (1970-09-01), Wallace et al.
patent: 3542651 (1970-11-01), Yagishita
patent: 3640331 (1972-02-01), Yagishita
Oh & Hartley, "Recycling Plating Wastes . . . " Products Finishing, May 1972 pp. 90-96.
A. Golomb, "Application of Reverse Osmosis . . . " Plating, Apr. 1972, 316-319.
Dando Thomas Joseph
Hewitt David Edward
Data General Corporation
Frank Jacob
Hruskoci Peter A.
Wall Joel
Wyse Thomas G.
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