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Table 4

Water quality parameters measured in the test water during the Bacillus globigii tests

Test conditionsFree chlorine (mg L−1)pHIron (mg L−1)Manganese (mg L−1)Total dissolved solids (mg L−1)Hardness (mg L−1)Color (Pt-co unit)Turbidity (NTU)
CMF clean + 100% UV <MDL 7.99 (±0.1) <MDL <MDL NA 138 (±2.8) 8 (±0.0) 0.61 (±0.0) 
CMF 50% block + 100% UV 0.04 (±0.1) 8.05 (±0.1) 27.5 (±14.7) <MDL 314 (±8.2) 140 (±0.0) 16 (±0.7) 0.68 (±0.1) 
CMF 100% block + 100% UV 0.03 (±0.0) 8.17 (±0.0) 152 (±5.0) 1.7 (±0.6) 300 (±4.8) 160 (±0.0) 13 (±2.1) 0.65 (±0.0) 
100% UV <MDL 8.31 (±0.0 <MDL <MDL 286 (±8.2) 130 (±28.3) 10 (±0.1) 0.33 (±0.0) 
70% UV 0.16 (±0.0) 7.82 (±0.0) 2.1 (±0.1) <MDL 278 (±5.1) 145 (±7.1) 17 (±0.7) 0.60 (±0.1) 
Test conditionsFree chlorine (mg L−1)pHIron (mg L−1)Manganese (mg L−1)Total dissolved solids (mg L−1)Hardness (mg L−1)Color (Pt-co unit)Turbidity (NTU)
CMF clean + 100% UV <MDL 7.99 (±0.1) <MDL <MDL NA 138 (±2.8) 8 (±0.0) 0.61 (±0.0) 
CMF 50% block + 100% UV 0.04 (±0.1) 8.05 (±0.1) 27.5 (±14.7) <MDL 314 (±8.2) 140 (±0.0) 16 (±0.7) 0.68 (±0.1) 
CMF 100% block + 100% UV 0.03 (±0.0) 8.17 (±0.0) 152 (±5.0) 1.7 (±0.6) 300 (±4.8) 160 (±0.0) 13 (±2.1) 0.65 (±0.0) 
100% UV <MDL 8.31 (±0.0 <MDL <MDL 286 (±8.2) 130 (±28.3) 10 (±0.1) 0.33 (±0.0) 
70% UV 0.16 (±0.0) 7.82 (±0.0) 2.1 (±0.1) <MDL 278 (±5.1) 145 (±7.1) 17 (±0.7) 0.60 (±0.1) 

<MDL = below method detection limit. MDLs for free chlorine = 0.02 mg L−1, Fe = 0.017 mg L−1, Mn = 0.002 mg L−1, TDS = 2 mg L−1, Hardness = 1 mg L−1, Color = 2 Pt-Co unit, and Turbidity = 0.1 NTU.

NA = Not analyzed.

Data in parentheses are ± standard deviation, n = 2.

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