Table 9.

Selected physicochemical parameters of spiked river water after RSM application (optimal conditions, pH = 6.5 ± 0.1, ACH dose = 0.35 mL/L, Time = 30 min).

Parameter	Unit	Result *	Effect (%) **
pH	-	6.5 ± 0.1	↓ 25.3
Specific Electrical Conductivity (SEC)	µS/cm	5350 ± 535	↑ 5.7
Salinity	mg NaCl/L	2820 ± 282	↑ 6.0
Turbidity	NTU	1.0 ± 0.1	↓ 96.2
Color	mg Pt/L	<2	↓ >98.0
Total Suspended Solids (TSS)	mg/L	2.0 ± 0.1	↓ 97.8
Chemical Oxygen Demand	mg O2/L	203 ± 30	↓ 70.0
Total Organic Carbon	mg/L	17.0 ± 2.6	↓ 88.7
Chloride	mg/L	1525 ± 229	↑ 10.6
Sulphate	mg/L	160 ± 24	↓ 7.0
Total Phosphorus (Total P)	mg/L	<0.3	Not significant
Total Nitrogen (Total N)	mg/L	1.7 ± 0.2	↓ 88.7
Ammonium-Nitrogen (N-NH4)	mg/L	0.05 ± 0.01	↓ 37.5
Diclofenac	µg/L	6.89 ± 0.43	↓ 30.4
Fluoxetine	µg/L	7.58 ± 0.49	↓ 24.7
Ethynylestradiol	µg/L	6.45 ± 0.42	↓ 35.4
Erythromycin	µg/L	6.88 ± 0.41	↓ 36.4
Amoxicillin	µg/L	7.26 ± 0.44	↓ 29.0
Colistin	µg/L	7.35 ± 0.43	↓ 25.5

* parameter value ± the measurement uncertainty for an extension factor k = 2, ** Effect = $\frac{\left(C1-C2\right)\times 100\%}{C1}$ and ** Effect = $\frac{\left(C2-C1\right)\times 100\%}{C1}$(for SEC, Salinity, chloride), where c₁-concentration in spiked river water, c₂-concentration in treated river water, ↑–increase in the parameter value, ↓–decrease in the parameter value.