Conclusions
A pragmatic test method for PAC using an OMP containing
model solution (2 mg/L each) was. Eight different PAC from various
origins were tested in model solutions and in WWTP effluents.
Removals in the test solution and effluent correlated very well
for BTA, to a lower extent for DCF but poorly for ACS.
OMP could be divided into two groups according to their
removal by different PAC: Removals of certain OMP positively correlated
with BTA while removals of other OMP showed a negative
correlation.
The test procedure facilitates the selection of the best and worst
PAC with regard to BTA removal. The two PAC with the lowest DCF
removals in the triple test solution revealed the lowest removals in
WWTP effluent and the PAC with the highest DCF removal in the
triple test solution ranked second in WWTP effluent.
However, a validation of the test method with different WWTP
effluents is required. Replacement of ACS with another compound
might improve the predictive capability of the test methods