Table 1.

Total numbers of E. coli living cells in the reactors at each operation time interval.

Time	Total Number of Living E. coil (CFU/mL)
	Reactor A 1 (Water + E. coli + Sun)	Reactor B 1,† (Water + E. coli + TiO2 + Sun)	Reactor C 1,† (Water + E. coli + TiO2 + UV)	Reactor 1 †	Reactor 2 †	Reactor 3 †
8:30	2.15 × 1011	2.15 × 1011	2.15 × 1011	2.59 × 107	2.59 × 107	2.59 × 107
10:30	1.53 × 1011	1.10 × 1011	8.65 × 1010	2.10 × 106	1.52 × 107	1.78 × 107
12:30	8.55 × 1010	7.70 × 1010	7.60 × 1010	1.85 × 106	2.60 × 106	3.35 × 106
14:30	8.15 × 1010	7.40 × 1010	4.65 × 1010	1.75 × 106	1.80 × 106	2.30 × 106
16:30	6.75 × 1010	4.45 × 1010	3.75 × 1010	1.20 × 106	1.25 × 106	2.05 × 106

¹ Volume of water in the reactor is 660 cm³; ^† Area of screen-printed TiO₂ film is 0.0252 m². The ratio of TiO₂ film:water volume in Reactors B and C is 1:2.62. Volume of water in Reactors 1, 2, and 3 is 660, 1320, and 1980 cm³; thus, the ratio of TiO₂ film:water volume in the reactor is 1:2.62, 1:5.24, 1:7.86, respectively in that order.