Wine Crossflow Filter - keynote

Gentle and efficient filtration

Cross-flow filters FCW

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Basic crossflow principles

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Dead-end vs. Crossflow

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CROSS-FLOW filtration principles

Feed wine

Filtrate

Concentrate Koncentrรกt

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Application

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Common application

Must

mechanical and microbial filtration before fermentation as de-sludge or final filtration of finished product instead of pasteurization

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Common application

Wine

wines at various stages of production

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Common application

Champagne

champagne and sparkling wines produced under pressure

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Common application

Stop fermentation

stopping primary and secondary fermentation of must and young wine at the required volume of alcohol Dokonalรก filtrace

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Common application

Wine spoilage

preventive and corrective microbial filtration in the case of wine spoilage and faults such as yest Bailii, Brettanomyces, Acetobacter bacteries etc

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FCW concept

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FCW concept

FCW – Filter Crossflow for Wine

1.Strong emphasis on gentle wine treatment 2.Process efficiency and economy 3.Customer care

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The main FCW benefits

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The main FCW benefits

The main FCW benefits •Reverse flow •Up to 40% energy savings due to serial arrangement of modules •Bakwash with filtrate •Polypropylen membrane •Minimum room requirements Dokonalá filtrace

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The main FCW benefits

Stainless steel modules provide sparkling wine filtration

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FCW filter product range

Automatic

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Semi-automatic

Manual

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Filtration membrane

Polypropylen membrane

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Membrane – PP vs PES

Benefits of PP membrane in comparison with PES •Lower adsorption tendency of wine ingredients – gentler filtration •Symmetrical pores – higher cleaning efficiency •Greater resistance to proteins and abrasion •Longer membrane lifespan •100% alcohol resistance

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Membrane – PP vs PES

Filtration layer thickness

Polypropylen membrana (PP)

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Crossflow filtration module

Polyethersulphone membrana (PES)

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Membrane – PP vs PES

Adsorption of polysaccharide, polyphenol and Tannin PES membrane PP membrana

Polyphenol

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Polysacharide

Tannin

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Membrane – PP vs PES

Only PP membrane is capable to filtrate red wine without significant cleaning difficulties!

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Backwashing & Reverse flow

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System diagram

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Reverse flow benefits

System workflow: •feeding - feed pump •concentrate – 2 way flow in the loop – low speed circulation pump • backwash – buffer tank with rubber bag

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Membrane clogging - backwash

Conventional system - one-way flow backwash of the membrane

the membrane after backwash

The circulation of the tangential flow in one direction only leads to an uneven surface membrane filter clogging, reduced efficiency of backwash and therefore less filtration throughput.

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Membrane clogging - backwash

The system with reverse flow backwash of the membrane

the membrane after backwash

With the automatic rotation of the tangential flow direction is used by more equitably the entire filter surface. Therefore backwash cycles are more efficient and cleaner membrane.

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Reverse flow benefits

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Reverse flow benefits

Reverse flow benefits: • much higher filtration surface efficiency • more effective cleaning • higher capacity of filtration cycle • higher filtration flow rater

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Reverse flow benefits

Filtration cycle length

Convetional system System with reverese flow

filtration lenght (hour)

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FCW backwash benefits

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FCW backwash benefits

FCW backwash benefits: •excludes mikcobiological contamination caused by atmospheric air •no wine oxidation durring filtration •reduced risk of membrane damage by pressure peaks •wine is not hydromechanicaly stressed by another pump Dokonalá filtrace

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Automatic system

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Fully automated FCW benefits

Fully automated FCW benefits: • provides nonstop process •feed and circulation pump controlled by frequency drive – very gentle filtration compare to manual and semi-automated systems •system handles filtration and sanitation without operator presence •enables integrity test before each filtration Dokonalá filtrace

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Fully automated FCW benefits

• provides several types of filtration and options of dealing with wine and sludge • remote control option (sms) • optional turbidity meter

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Thank you!

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