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Table 3

Main technical index and structural parameters of the flotation column

Processing capacity (m3 d−12,000 
Flotation column dimension(mm) Ø 2,900 × 6,800 
Diameter (mm) 2,000 
Mixing tank dimension (mm) Ø 2,000 × 4,700 
Oily sewage Oil concentration ≤3,000 mg/L 
SS concentration ≤200 mg/L 
Circulating pump Flow rate Q = 150 m3/h Hydraulic head H = 40 m 
Circulating pressure (MPa) 0.15–0.35 
Residence time (min) 14 
Processing capacity (m3 d−12,000 
Flotation column dimension(mm) Ø 2,900 × 6,800 
Diameter (mm) 2,000 
Mixing tank dimension (mm) Ø 2,000 × 4,700 
Oily sewage Oil concentration ≤3,000 mg/L 
SS concentration ≤200 mg/L 
Circulating pump Flow rate Q = 150 m3/h Hydraulic head H = 40 m 
Circulating pressure (MPa) 0.15–0.35 
Residence time (min) 14 
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