Main Title |
Effect of Aeration Basin Configuration on Bulking at Low Organic Loading. |
Author |
Lee, Sang-Eun ;
Koopman, Ben L. ;
Jenkins, David ;
|
CORP Author |
California Univ., Richmond. Sanitary Engineering and Environmental Health Research Lab.;Municipal Environmental Research Lab., Cincinnati, OH. |
Year Published |
1982 |
Report Number |
EPA-R-806107; EPA-600/2-82-081; |
Stock Number |
PB82-234287 |
Additional Subjects |
Sewage treatment ;
Activated sludge treatment ;
Bulking ;
Aeration ;
Performance evaluation ;
Graphs(Charts) ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB82-234287 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
37p |
Abstract |
Continuous-flow laboratory-scale activated sludge units were operated on domestic sewage at low F/M. In CSTR units at the F/M range of 0.05-0.25 g COD removed/g TMLVSS, day, bulking did not occur with a weak (BOD(5) = 139 mg/L) sewage feed and TMLSS = 1.5 g/L. Supplementation of sewage by blending with raw sludge produced a stronger sewage (BOD(5) = 315 mg/L) which caused TMLSS to increase to 3.5 g/L. Bulking occurred in CSTR, 2, 4, 8, and 16 compartment units. An aeration basin with initial compartment 1/32nd of aeration basin volume prevented but did not cure bulking. An aeration basin with initial compartments 1/74th of aeration basin volume, prevented and cured bulking. Anoxia in an aeration basin with two initial compartments each 1/64th of the total aeration basin volume did not aid in curing bulking. The SVI of sludges at low F/M (0.3-0.35 g COD removed/g TMLVSS, day) and high TMLSS (3.5 g/L) is related to conditions in the initial compartment rather than those in the remainder of the aeration basin. Initial compartment soluble COD, first-compartment F/M, and initial compartment size are important; floc loading, dispersion number and total number of aeration basin compartments are not important. |
NTIS Title Notes |
Final rept.. |
PUB Date Free Form |
Jul 82 |
Category Codes |
13B; 68D |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/14 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
323819784 |
Origin |
NTIS |
Type |
CAT |