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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Gentle and efficient filtration
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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Gentle and efficient filtration
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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