CROSSFLOW FILTRATION TECHNOLOGY

Tamanend Wine ConsultingAn Overview of Crossflow Filtration Technology

MEMBRANE TECHNOLOGY

a “proven technology”

food and dairy industry,

water purification

treatment of liquid fluent streams,

Increasing presence into

pharmaceutical

biotechnological

industries purifying products of high value and low volume

and wine

HEALTH BASIS OF CROSSFLOW FILTRATION

Filter aids have been classified as hazardous

materials

Provokes lung diseases due to PM10

Environmental effects due to sludge

deposition

CROSSFLOW FILTER - BUSINESS BASIS

DE/Kieselguhr disposal costs likely to rise due to hazardous

human and environmental concerns

Europe currently 60 to 120 €

Going to 600 €

Environmental effects due to filter cake production creating

public relations issues

Reduced labor per liter filtered

More flexible capacity

Reduced number of filtrations

CFF/TFF ADVANTAGES

Wine Quality

Single Filtration Step minimizes wine movement

Sterile level clarity improves wine sanitation

Improve subsequent wine treatments

Heat Stability

Brighter wine – Transfer direct to cold stabilization

Cold stability

More efficient

Fining

Faster more compact lees

REPRESENTATIVE UNITS

Romfil (Euromachines USA US Dist.)

Padovan (ATP US Dist.)

Vaslin Bucher (Gusmer Cellulo US Dist.)

Velo (Scott Labs US Dist.)

Koch

Pall

Sartarious

CROSSFLOW VS DEAD HEAD FILTRATION

FILTRATION CURVE DYNAMICS

CROSSFLOW SURFACE EFFECTS

CFF/TFF ADVANTAGES II

Cost Savings

Filtration process requires less operator time

Single step from 1% solids 0.2 micron saves two

standard filtration steps

Can operate on 22 hour day reducing filtered unit

cost and need to upsize

SIZE REJECTION CHART

MICROFILTRATION ULTRAFILTRATION

NANOFILTRATION REVERSE OSMOSIS

From Armourtech.co.nz

MEMBRANE CUTOFF

SYMMETRIC/ASYMMETRIC

symmetric

membrane pore diameter equal through cross

section

membrane thickness causes resistance to mass

transfer

membrane acts as a selective barrier.

SYMMETRIC/ASYMMETRIC II

Asymmetric

pore size at the surface is small relative to cross section

skin (thin top of the layer) determines selective barrier.

large particles do not enter body of the membrane

high permeation rate of a very thin membrane

high selectivity of a dense membrane

SYMMETRIC/ASYMMETRIC III

Asymmetric II

Selectivity result of membrane

pore sieving

hydrophilic-hydrophobic interactions

membrane charge

Construction in two parts

Skin 1 to 2 μ

Body porus 200 to 500 μ

SYMMETRIC/ASYMMETRIC

Symmertric – Top View

• Symmetric Xs Section

Symmetric Top View

SYMMETRIC/ASYMMETRIC

Asymmetric

• Asymmetric cross section

MEMBRANE PHYSICS

PinTMP Pp+=

MEMBRANE PHYSICS

PinTMP

PoutPp

+

2=

MEMBRANE DYNAMICS

MEMBRANE DYNAMICS

MEMBRANE CONFIGURATIONS

Conventional Configurations

Polymeric membranes

Spiral

Tubular/Hollow fiber

Plate and Frame

Inorganic Membranes

Tubular

Specialized and Proprietary

SPIRAL WOUND

TUBULAR POLYMERIC MODULES

CERAMIC TUBULAR MODULES

MODES OF OPERATION

Batch Operation

Simple Batch

Without recirculation

With recirculation

Fed Batch

Without recirculation

With recirculation

Continuous Operation

Single Stage

Multiple Stage

PROCESS SCHEMATIC

MODES OF OPERATION

SIMPLE BATCH WITH RECIRCULATION

CONTINUOUS WITH RECIRCULATION

MULTIPLE STAGE

REPRESENTATIVE SYSTEM

REPRESENTATIVE SYSTEMS

REPRESENTATIVE SYSTEMS

CROSSFLOW FILTRATION TECHNOLOGY

Tamanend Wine ConsultingThank you for coming