Main Title |
Study of Upflow Filter for Tertiary Treatment. |
Author |
Morriso, John E. ;
|
CORP Author |
Jefferson Parish Dept. of Sanitation, Metairie, La. |
Year Published |
1973 |
Report Number |
EPA-17030-DMA; 14217,; 670/2-73-074 |
Stock Number |
PB-223 354 |
Additional Subjects |
( Sewage filtration ;
Sand filters) ;
Sewage treatment ;
Trickling filtration ;
Alums ;
Flow rate ;
Performance evaluation ;
Sand filtration ;
Tertiary sewage treatment
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-223 354 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
65p |
Abstract |
A sand-media upflow filter was installed at an existing trickling filter sewage treatment plant which receives combined domestic and industrial waste, to test its effectiveness in a tertiary treatment function. Preliminary testing was performed at three different flow rates and with different chemicals as flocculants and coagulant aids to determine optimum conditions for final, full-scale testing. In the final, full-scale test phase, a flow rate equivalent to 0.5 MGD was used, and alum was injected as required to produce satisfactory turbidity levels in filter effluent. The operation was monitored constantly for flow rate, inlet pressure, water temperature and alum input; influent and effluent values for turbidity, suspended solids, BOD, COD, total phosphate, orthophosphate and pH were determined. Filter performance was inconsistent and generally unpredictable. Alum as a coagulant was effective as an aid in contaminant reduction. Polyelectrolytes used as coagulant aids to the alum proved ineffective in developing floc strength and extending the cycle duration. |
Supplementary Notes |
Prepared in cooperation with de Laureal Engineers, Inc., New Orleans, La. |
PUB Date Free Form |
Sep 73, |
Category Codes |
13B; 68D |
NTIS Prices |
PC E03/MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326566390 |
Origin |
NTIS |
Type |
CAT |