| Main Title |
Ammonia removal from agricultural runoff and secondary effluents by selected ion exchange. {microform}. |
| CORP Author |
Pacific Northwest Laboratory. |
| Publisher |
Federal Water Pollution Control Adm., |
| Year Published |
1969 |
| Report Number |
WPRD 26 01; 5,; 5 |
| Stock Number |
PB-187 759 |
| Additional Subjects |
( Ammonia ;
Water pollution) ;
( Ion exchange ;
Ammonia) ;
Pilot plants ;
Calcium oxides ;
Silicates ;
Water treatment ;
Zeolites ;
Clinoptilolite ;
Agricltural wastes ;
Strippers
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-187 759 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
iv, 52 p. : graphs, append. ; 28 cm. |
| Abstract |
A selective ion exchange process was developed for the removal of ammonia nitrogen from wastewater. The process employs a natural zeolite, clinoptilolite, which is selective for ammonium ions in the presence of sodium, magnesium, and calcium ions. Regeneration of the exhausted clinoptilolite is accomplished with solutions or slurries containing lime. Lime provides hydroxyl ions which react with the ammonium ions to yield an alkaline aqueous ammonia solution. This ammonia solution is processed through an air stripping tower to remove the ammonia which is exhausted harmlessly to the atmosphere. The spent regenerant is then fortified with more lime and recycled to the zeolite bed to remove more ammonia. Since the regenerant is not discarded, the process generates no liquid wastes. The ion exchange equilibria of four zeolites was investigated and clinoptilolite was selected for further study on the basis of its ammonium ion selectively and low cost. Operation of the mobile plant with secondary effluent resulted in ammonia removals of 97 and 93 percent at 70,000 and 100,000 gallons per day respectively; thus demonstrating that selective ion exchange provides a highly effective means for removing ammonia from wastewater. (Author) |
| Notes |
TWRC-5. For: Advanced Waste Treatment Research Laboratory, Robert A. Taft Water Resource Center. Grant #WPRD 26-01. Microfiche. |
| Place Published |
Cincinnati, Ohio : |
| Supplementary Notes |
See also Rept. no. 6, PB-187 760. |
| PUB Date Free Form |
1969. |
| NTIS Prices |
PC A04 MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20050318140453 |
| Language |
eng |
| Origin |
NTIS |
| Type |
MERGE |
| OCLC Rec Leader |
00888cam 2200253Ka 45020 |
