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Page Title:
B.2.4 Effluent contaminant concentrations |
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 B.2.4 Effluent contaminant concentrations
Dissolved concentrations. If applicable water quality standards are defined in
terms of dissolved concentrations, the dissolved concentrations of COC in the
effluent elutriate (determined directly from the test) and may be compared with the
standards after consideration of mixing.
Calculation of total concentrations. If applicable water quality standards are
defined in terms of total or whole water concentrations, calculations of the
fractions of contaminants in the total suspended solids and the total concentrations
in the effluent are required. The fraction of COCs in the total suspended solids
may be calculated in terms of milligrams per kilogram SS as follows:
Ctotal - C diss
F SS = (1 10 )
6
(B-6)
SS
where
FSS = fraction of analyte in the total suspended solids, mg analyte/kg of
suspended solids
Ctotal = total concentration, mg analyte/L of sample
Cdiss = dissolved concentration mg, analyte/L of sample
SS = total suspended solids concentration, mg solids/L of samples
The calculation of total concentration of COCs in the effluent is based on
results of both the elutriate test and an estimate of effluent TSS under the
anticipated operating conditions for the CDF. The total COC concentration in
milligrams per liter in the effluent may be estimated as:
F ss S eff
(B-7)
Ctotal = C diss
(1 106 )
where
Ctotal = estimated total concentration in effluent, mg analyte/L of water
Cdiss = dissolved concentration determined by effluent elutriate tests, mg
analyte/L of sample
FSS = fraction of analyte in the total suspended solids calculated from
effluent elutriate results, mg analyte/kg of suspended solids
SSeff = suspended solids concentration of effluent estimated from
evaluation of sedimentation performance, mg suspended solids/L of
water (this may be determined by a long column settling test as
described in Section B.3).
(1 H 106) = conversion factor, mg/mg to mg/kg
B7
Appendix B Column Settling Test and Effluent Elutriate Procedures
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