| Main Title |
Trihalomethane Removal by Coagulation Techniques in a Softening Process. |
| Author |
Thurrott, J. C. ;
Zwart-Duryea, H. ;
Sloane, J. R. ;
Williamson, D. ;
|
| CORP Author |
Daytona Beach, FL.;Municipal Environmental Research Lab., Cincinnati, OH. |
| Year Published |
1983 |
| Report Number |
EPA-CR-807426; EPA-600/2-83-003; |
| Stock Number |
PB83-151845 |
| Additional Subjects |
Water treatment ;
Halogen organic compounds ;
Disinfectants ;
Coagulation ;
Softening ;
Potable water ;
Chlorine organic compounds ;
Performance evaluation ;
pH ;
Pilot plants ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB83-151845 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
89p |
| Abstract |
Experimental work was conducted on both bench and pilot scale at the Daytona Beach Ralph F. Brennan water treatment plant to determine what combinations of coagulants and water pH could best remove trihalomethane precursor materials. The following conditions were evaluated with lime softening: Coagulation with: clay plus a cationic polymer, alum plus a non-ionic polymer, alum plus low pH, alum plus high pH, and experimental polymeric coagulant. A two-stage coagulation process, alum added at low pH (ca. 5.0) followed by settling, softening, and settling again, showed a slight improvement in precursor removal over single-step coagulation and over softening followed by low pH coagulation. Pilot scale performance (i.e. quality of finished water) tended to be poorer than full scale because of no sludge recirculation. |
| Supplementary Notes |
Prepared in cooperation with Russell and Axon, Daytona Beach, FL., and Environmental Science and Engineering, Inc., Gainsville, FL. |
| NTIS Title Notes |
Final rept. Oct 80-Jul 82. |
| PUB Date Free Form |
Jan 83 |
| Category Codes |
13B; 68D; 50B |
| NTIS Prices |
PC A05/MF A01 |
| Primary Description |
600/14 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
307821177 |
| Origin |
NTIS |
| Type |
CAT |
