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Table 7

Result of 2,000 m3 d−1 oil-water separation experiment for four days

Sample timeColumn 1
Column 2
Oil concentration at inflow (mg L−1)Oil concentration at outflow (mg L−1)Oil removal efficiency (%)Oil concentration at outflow (mg L−1)Oil removal efficiency (%)
4:00 1,088.17 115.52 89.38 13.20 88.57 
13:00 1,195.65 200.00 83.27 28.80 85.60 
18:00 1,126.70 140.52 87.53 29.02 79.35 
23:00 923.34 125.08 86.45 15.99 87.22 
6:00 1,259.05 106.82 91.52 43.45 59.32 
12:00 570.58 72.30 87.33 20.75 71.30 
17:00 500.00 42.23 91.55 14.06 66.71 
23:00 706.17 21.66 96.93 11.00 49.22 
3:00 820.11 114.51 86.04 15.76 86.24 
10:00 1,267.28 95.29 92.48 41.11 56.86 
16:00 848.21 66.09 92.21 9.15 86.16 
23:00 829.43 131.40 84.16 14.37 89.06 
6:00 928.57 118.68 87.22 26.79 77.43 
10:00 1,612.72 63.01 96.09 24.23 61.55 
18:00 1,976.19 119.16 93.97 44.83 62.38 
23:00 622.65 91.84 85.25 21.78 76.28 
Average 1,017.18 101.51 89.46 23.39 73.95 
Sample timeColumn 1
Column 2
Oil concentration at inflow (mg L−1)Oil concentration at outflow (mg L−1)Oil removal efficiency (%)Oil concentration at outflow (mg L−1)Oil removal efficiency (%)
4:00 1,088.17 115.52 89.38 13.20 88.57 
13:00 1,195.65 200.00 83.27 28.80 85.60 
18:00 1,126.70 140.52 87.53 29.02 79.35 
23:00 923.34 125.08 86.45 15.99 87.22 
6:00 1,259.05 106.82 91.52 43.45 59.32 
12:00 570.58 72.30 87.33 20.75 71.30 
17:00 500.00 42.23 91.55 14.06 66.71 
23:00 706.17 21.66 96.93 11.00 49.22 
3:00 820.11 114.51 86.04 15.76 86.24 
10:00 1,267.28 95.29 92.48 41.11 56.86 
16:00 848.21 66.09 92.21 9.15 86.16 
23:00 829.43 131.40 84.16 14.37 89.06 
6:00 928.57 118.68 87.22 26.79 77.43 
10:00 1,612.72 63.01 96.09 24.23 61.55 
18:00 1,976.19 119.16 93.97 44.83 62.38 
23:00 622.65 91.84 85.25 21.78 76.28 
Average 1,017.18 101.51 89.46 23.39 73.95 
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