U S FILTER MODEL 750 MEMBRALOX SILVERBACK ALKALINE CLEANER

The Membralox SILVERBACK Alkaline Cleaner Recovery System is designed to
continuously purify alkaline cleaner baths by utilizing a ceramic ultrafi
ltration
membrane in the cross-flow mode of operation. The membrane is impervious
to
nearly all chemicals except for phosphoric and hydrofluoric acids. Tempe
ratures
up to 220 degrees F can be tolerated.

Membrane
Model 150 has a Membralox type 1P19-60 module made up of one alpha alu
mina
element with 19 lumens (channels), each 6.0 mm in diameter. The insid
e of each
channel is lined with a alpha alumiana or zirconia membrane having a t
otal
surface area of 0.3 sq. m.(3.2 sq.ft.) and the pore size indicated on
the cover
page.
Model 750 has a Membralox type 7P19-40 module made up of seven alpha a
lumina
elements, each with 19 lumens (channels) that are 4.0 mm in diameter.
The
inside of each channel is lined with an alpha alumina or zirconia memb
rane
having a total surface area of 1.4 sq.m. (15.0 sq.ft.) and the pore si
ze
indicated on the cover page.
Rated Flow
Dependent of the composition and viscosity of the alkaline cleaner fee
d
Utility Requirements
Instrument air < 1 scfm, 80 psi, dry, oil-free
Steam 6 lb/hr OR hot water 160 degrees F
Electricity see cover page
Membrane Backpulse Method
Air driven backpulse with adjustable internal timer
Membrane Cleanup
Chemical cleanup utilizing 0.1% detergent, 2% sodium hydroxide, or 1%
nitric acid
Control System
Solid state timer for backpulse
Prefiltration
Integral bag filter with polypropylene sock and stainless steel basket
CONT
Tank Details
Primary settling (feed) tank - sloped bottom with integral oil skimmer
and
bottom drain
Secondary recirc (processing) tank - slped bottom with drain tank mate
rial
of construction - 304 stainless steel
Operation Mode
Continuous feed and bleed with permeate returned to cleaner bath. Mos
t of
the reject id recycled back to the processing tank, but a small stream
is
returned to the primary settling tank for concentration and disposal.
Soil Disposal
Manual oil drain from top of primary tank. Manual sludge drain from b
ottom
of primary tank
Feed Requirements
Alkaline cleaner solution egrees F
and no phosphoric acid, diatomaceous earth, or carbon fines.