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Cross-flow filtration of fruit juice

 

 

Table 10.4. Production of the filtration technology
 
Parameter The centrifuge The vacuum filter The Filtomat filter unit
Investment costs (fixed costs and capacity) 2 mill.
Capacity: 10 m3/h
1,5 mill., surface 9,2 m2
Capacity BC: 7 m3/h
ó 0,78 m3/h/m2
Capacity C: 5 m3/h
ó 0,54 m3/h/m2
0,45 mill. surface 1 m2
0,075 mill to replace the filters
Capacity: 20 m3/h (water)
Capacity: 10 m3/h juice (estimated)
ó 10 m3/h/m2
The transcription of the investment (year) 10 years 10 years 5 years, costs less - shorter transcription period
Lifetime of the technology (years and cost a year / m3). 20 – 40 years
2 mill/30 y = 66666 Kr/year
66666 Kr/year / (5410,8 m3 + 3836,8 m3) = 7,21 Kr/m3
20 – 40 years
1,5 mill/30 y = 50000 Kr/year
50000 Kr/year / (871,74 m3 + 1342,88 m3) = 22,58 Kr/m3
20 years for the unit.
Min. 4 years for the filters *
0,45 mill/20 y + 0,075 mill/4 y =
41250 Kr/year
41250 Kr/year / (10808 m3)
= 3,82 Kr/m3

* The Filtomat filter is estimated to last 2 years when it is used 24 hour’s a day and water is filtrated.
The estimated lifetime for the filters at VS is: (20*24*365*2) m3/y / (4769 + 6012) m3 = 32 y
The filters are not destroyed by filtration but by time and cleaning. A conservative estimate lifetime guess is 4 years.