HM UF 80 PES 10KD

Membrane specifications

Model

HM UF 80 PES 10KD

Type

Hollow fibre ultrafiltration

Material

Modified polyethersulphone

MWCO

10,000 Dalton

Fibre bore diameter (inner)

0.8 mm

Housing

UPVC

End cap / couplings

GFPP

Module data

Membrane surface area (active)

80 m²

Outer diameter, housing

280 mm

Total module length

2080 ± 5.0 mm

Distance between feed ports

1948 ± 5.0 mm

Distance from feed to module centre axis

230 ± 2.0 mm

Feed / permeate port

2 inch Victaulic end

Backwash in / out

2 inch Victaulic end

Empty weight with end caps

65 kg

Operational data

Mode of operation

In to out (dead end / cross flow)

Operating flux range

100 lmh

Operating temperature

15 to 45 °C

Feed pressure operating range

2.0 to 2.5 bar

Burst pressure (housing)

6.0 bar

Transmembrane pressure

1.0 to 1.4 bar

pH range, operation

4.0 to 10.0

Chlorine tolerance, instantaneous

200 ppm (short duration)

Chlorine tolerance, maximum

200,000 ppm-hours

Performance details

Filtrate SDI

3 or less

Colloidal silica retention, inlet silica 5 ppm or less

Outlet 10 ppb or less, for MWCO greater than 10,000 Dalton

Colloidal silica retention, inlet silica above 5 ppm

99.8% rejection, for MWCO greater than 10,000 Dalton

Process data

Backwash flux

100 to 141 gfd (170 to 240 lmh)

Backwash pressure

1.5 to 2.5 bar

Backwash frequency

Once every 30 to 60 minutes (typical)

Backwash duration

30 to 60 seconds (typical)

Forward flush duration

15 to 45 seconds (typical)

Forward flush flow

Feed flow (typical)

Chemical enhanced backwash

Once in 8 / 16 / 24 hours (typical)

NaOH

pH 12 to 13

HCl

pH 3 to 4

Disinfection chemicals

NaOCl

Backwash, CEB and CIP frequency and duration are set by the design, based on the feed water source, quality and fluctuations.