SME-Developing business with mine water treatment. Presentation by Ville Hakala, Sofi Filtration

1. 1
SOFIFILTER
ACQUEAU workshop 12.3.15 / Ville Hakala

2. Need
Problem
• Large water streams (10 - 1000 m3/h) with fine particle
(<100 µm) contaminations need to be treated
• Difficult to handle with traditional methods like settling
Macroeconomic drivers
• Tightening environmental regulations
• Water cost and scarcity
Sofi patented technology for recirculating water
• Less fresh water intake
• Less environmental impact
• Pure water in process
• No valuables to waste
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3. Sofi Filter
• Self-cleaning microfilter from 0.2 µm
• Produces clear water
• Combines in one solution:
• Cross-flow & automatic Clean-in-
Place
• Economic design (no moving parts)
• Low energy consumption and
pressure loss
• High filtrate flux [m3/m2h]
High capacity Solids-free filtrate
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4. Long-life element
•0,2...20 µm
•Stainless steel
•No disposable filters
Self-cleaning
•Ultrasonic resonator
•Backpulse with filtrate
•No chemicals needed
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High cross-flow design
•High capacity
•Low energy consumption
Key Features
4

5. *Patented
**Cross-flow illustration: Wikipedia
Innovation
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6. 0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
0 20 40 60 80 100 120 140 160 180
Permeability,l/m2/h/bar
Feed flow rate, l/min
0,2 um
0,5 um
1 um
5 um
10 um
20 um
Elements
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7. Backwash 2 min interval
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8. Ultrasonic cleaning
Resonating bzzzzzz
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9. Cases
Case Ferrochrome
refining
Nickel
refining
Zinc
electrolysis
Copper
electrolysis
Application Zinc removal Belt filter
permeate
Gypsum
removal
Bi, Sb removal
Need Less waste Ni recovery Energy saving Product quality
Feed solids [mg/l] 7 1000 600 1
Flux [m3/m2h] 19.9 7.3 14.3 28.4
Element [µm] 1 / 0,5 10 10 1
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10. Sofi Filter
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11. Sofi Filter
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12. Sofi Filter – Water Treatment Container
• Unit up to 100 m3/h
• Mobile solution 20 ft container
• Remote monitoring & control
6m
2,5m
2,5m
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13. Feasibility
Feed
FILTRATE
500 m3/h
o 10Mt/y, 1250t/h mine operation
o Water consumption* @1m3/ton :
10Mm3/y
o Water loss from tailings & concentrate
lock-up, evaporation
o » Treat after flotation i.e. short circuit
o Freshwater cost@ $1/m3 (up to $4/m3)
o Sofi increases water recirculation
capacity by 500m3/h and 3,5Mm3/y
 Water recirculation rate +35%
 Annual cost savings $3,500,000
 Annual water conservation
3,500,000m3
*BEST PRACTICES AND EFFICIENT USE OF WATER
IN THE MINING INDUSTRY
Sofi WRS
REJECT
FEED
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14. Why Sofi Filter ?
• Physical self-cleaning
features
• No chemicals required
• No bag/cartridge filter change
cost
• No manual labour for change
• Automatic
• Remote monitoring & control
• Low energy consumption
• Small footprint
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15. Thank You!
www.sofifiltration.com
Ville Hakala
Chairman
+358 40 704 9290
ville@sofifiltration.com
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