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Table 2

The setup parameters of testing devices

SystemOperating parameterSetup valueUnit
Pressurized-pot microfiltration Number of filter Piece 
Filtration rate 3.2 m3/h 
Nominal bore diameter μm 
Air-backflushing pressure 0.2 Mpa 
Air-backflushing rate m3/h 
Water-backflushing rate m3/h 
Interval between backflushings 12–24 
Duration of backflushing min 
Interval between chemical cleanings 
Occupation of land in practical engineering when the water-supply scale is regarded as 100,000 m3/d 170 m2 
UF Internal/external diameter of membrane fiber 1.00/2.00 mm 
Specific area of membrane 15 m2 
Nominal bore diameter 0.02 μm 
System structure Immersed in water 
Direction of filtration Out-in pressurized 
Maximum suctioning pressure 60 kPa 
Maximum operating temperature 40 °C 
Range of operating pH 1–13 
Average permeability of filtration 25 Lmh 
Permeability of backflushing 30 Lmh 
Aeration amount m3/piece 
Occupation of land in practical engineering when the water-supply scale is regarded as 100,000 m3/d 1,100 m2 
NF Specific area of membrane component 37.2 m2/piece 
Maximum operating temperature 45 °C 
Maximum operating 50 bar 
Maximum permissible TMP 1.0 bar 
Permissible range of pH while functioning constantly 3–10 
Permissible range of PH while being cleaned within a short period (30 min) 1–12 
Permeability of membrane 27 Lmh 
Inflow rate of raw water 3.20 m3/h 
Outflow rate of produced water (filtration rate) 2.9 m3/h 
Recovery rate 90 
SystemOperating parameterSetup valueUnit
Pressurized-pot microfiltration Number of filter Piece 
Filtration rate 3.2 m3/h 
Nominal bore diameter μm 
Air-backflushing pressure 0.2 Mpa 
Air-backflushing rate m3/h 
Water-backflushing rate m3/h 
Interval between backflushings 12–24 
Duration of backflushing min 
Interval between chemical cleanings 
Occupation of land in practical engineering when the water-supply scale is regarded as 100,000 m3/d 170 m2 
UF Internal/external diameter of membrane fiber 1.00/2.00 mm 
Specific area of membrane 15 m2 
Nominal bore diameter 0.02 μm 
System structure Immersed in water 
Direction of filtration Out-in pressurized 
Maximum suctioning pressure 60 kPa 
Maximum operating temperature 40 °C 
Range of operating pH 1–13 
Average permeability of filtration 25 Lmh 
Permeability of backflushing 30 Lmh 
Aeration amount m3/piece 
Occupation of land in practical engineering when the water-supply scale is regarded as 100,000 m3/d 1,100 m2 
NF Specific area of membrane component 37.2 m2/piece 
Maximum operating temperature 45 °C 
Maximum operating 50 bar 
Maximum permissible TMP 1.0 bar 
Permissible range of pH while functioning constantly 3–10 
Permissible range of PH while being cleaned within a short period (30 min) 1–12 
Permeability of membrane 27 Lmh 
Inflow rate of raw water 3.20 m3/h 
Outflow rate of produced water (filtration rate) 2.9 m3/h 
Recovery rate 90 
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