Winegrowers Supplies - Flotation filters - for Must (juice) clarification, also for cider and wine after fermentation
Must clarification is very important in order to achieve high-quality wines. Traditionally it has been carried out with either:-
1. centrifuge (separator): high machine cost and high maintenance cost.
2. treatment by Yeast-filter or rotary filter: lower capital cost than a separator.
long waiting time compared with a separator,
higher number of bacteria because of the long waiting time,
not a solid sludge-cake.
Now there is the process of 'flotation clarification', which has for a long time been used in sewage treatment.
In recent years it has been applied increasingly in the clarification of fruit Must.
This 'single tank circulation' procedure enables the flotation and the separation of the sludge from the clear must in the one tank.
Addition of pectolytic enzymes, a bentonite and a special high-bloom gelatine needs to be done initially and can be fed in via a special ball-valve on the Flotation filter.
The clarification procedure is based on inserting minute air or gas bubbles into the liquid; Nitrogen is necessary for wine or cider in order to avoid oxidation problems later.
These attach themselves to the sludge particles and drive them up to the surface of the liquid.
The sludge particles remain there and form into a solid sludge-cake. This cake mass can be continually skimmed off from the surface, or more usually after complete separation you drain off the clear liquid through the final drain outlet at the bottom of the tank.
The surface solids produced are extremely compact, so a sharp distinction between clear must and floating solids is achieved. The clear Must can be pumped out after little more than 12 hours.
Lower investment cost,
Low or no maintenance costs,
The most rapid processing,
Clarification to a very high degree,
Reduction of phenols by oxygen incorporation (30%),
Clarification of white and red, also heated grape must without colour loss,
Clean wine or cider aromas,
Solid sludge-cake (max 10 to 15 % of the volume) which needs no further processing.
Dosing unit in stainless steel with dosing pump and stirrer. Adjustable dosing flow rate.
Product pump in stainless steel.
Back-lit mirrors to check the product clarity.
Residual filtering with pump through the final disc, internal (with external as an option).
Mini 5000: 2925 Euros
Developed for small producers, throughput: up to 2500 litres/hour, 230 Volt, 1.5 kWatt pump, mounted on a trolley.
Air intake unit with manometer, adjustable pressure relief valve.
Mini 10000: up to 5,000 litres/hour, 3 kWatt pump motor, 3699 Euros
Mini 15000: up to 7,500 litres/hour, 4150 Euros
B50: approx 3000 litres/hour, 380 Volt / 3.0 kWatt / 2800 rpm; 2999 Euros
B80: approx 8000 litres/hour, 380 Volt / 3.6 kWatt / 2800 rpm; 3699 Euros