Main Title |
Risk Equivalent Seasonal Waste Load Allocation. |
Author |
Rossman, L. A. ;
|
CORP Author |
Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. |
Publisher |
c1989 |
Year Published |
1989 |
Report Number |
EPA/600/J-89/530; |
Stock Number |
PB91-196220 |
Additional Subjects |
Water quality management ;
Water pollution standards ;
Risk assessment ;
Computerized simulation ;
Seasonal variations ;
Pollution regulations ;
Load distribution ;
Stochastic processes ;
Statistical analysis ;
Water pollution sampling ;
Water pollution control ;
Concentration(Composition) ;
Stream flow ;
Comparison ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-196220 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
10p |
Abstract |
Seasonal wastewater discharge programs employ different effluent standards during different times of the year to take maximum advantage of a receiving water's natural capacity to assimilate pollutants. The rational design of the programs should try to achieve the maximum economic benefits possible without increasing the risk of water quality impairment. A method is developed for designing seasonal programs for individual dischargers that limits the risk of one or more water quality standard violations in any year. The key elements involve: (1) treating seasonal receiving water assimilative capacity as a random variable; (2) assuming Markov-like behavior of these random variables between seasons; and (3) using a nonlinear programming model to find seasonal discharge limits that minimize waste treatment efforts while maintaining an acceptable annual risk of water quality violation. A case study of controlling ammonia toxicity is presented as well as a comparison of the potential savings available from seasonalization for several pollutants on two rivers with differing seasonal regimes. |