PURAL ℗ PROCESS Technology to remove Sulphates, by Anodizing rinses for final dumping as : ♦ irrigation water quality or for ♦ partial or total reuse (Z.L.D.) by Franco FALCONE C.I.E. General manager ALUMINIUM TWO THOWSEND INTERNATIONAL CONGRESS – Milano Room Smeraldo - 05/15/2013, h. 12:00 am ANODIZING LINE Reuse WASTE PURAL PLANT or Irrigation
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PURAL℗ PROCESS
Technology to remove Sulphates, by Anodizing rinses
for final dumping as : ♦ irrigation water quality
or for ♦ partial or total reuse (Z.L.D.) by Franco FALCONE
C.I.E. General manager
ALUMINIUM TWO THOWSEND INTERNATIONAL CONGRESS – Milano Room Smeraldo - 05/15/2013, h. 12:00 am
ANODIZING LINE
Reuse
WASTE
PURAL PLANT
or Irrigation
COMPAGNIA ITALIANA ECOLOGIA S.R.L.
2011 - CIE’S 30TH ANNIVERSARY CRUISE
♦ CIE foundation: 1981
32 years of expertise
in Water Treatment for
Metal Finishing Lines
COMPAGNIA ITALIANA ECOLOGIA S.R.L.
APPLIANCES Aluminium Wheels
COIL COATING ALUMINIUM EXTRUSIONS
ALUMINIUM CANS
WASTE WATER PLANTS SPECIFICALLY DEDICATED TO METAL FINISHING LINE
TARGET MARKET: METAL FINISHING INDUSTRIES
AUTOMOTIVE
COMPAGNIA ITALIANA ECOLOGIA S.R.L. INNOVATIONS AWARDS & PATENTS
Die Cleaning
Bath Dirty Dies
NaOH
Neutralization
& Regeneration
SOLIDS
Al(OH)3 CaCO3
CATALYTIC PROCESS FOR CAUSTIC SODA RECOVERING
BY SPENT DIE CLEANING SOLUTION
Patent n°1398512
Regenerated NaOH
PROCESS FOR MINIMIZE SULPHATES AND FLUORIDES
GENERATING ‘IRRIGATION’ AND REUSABLE WATER
ANODIZING LINE
PURAL PLANT
WASTE
Reuse or
Irrigation
COMPAGNIA ITALIANA ECOLOGIA S.R.L. WORLDWIDE CIE CUSTOMERS
COMPAGNIA ITALIANA ECOLOGIA S.R.L. ACTIVITIES FOR ALUMINIUM LINES
1) REVERSE OSMOSIS UNITS
2) DEIONIZING AND MIXED BED UNITS
3) CHEMICAL DOSING AND CONTROLLING UNITS
4) WASTE WATER PLANTS (PURAL® TECHNOLOGY)
5) ZERO LIQUID DISCHARGE PLANT
6) TELESERVICE AND TELEASSISTANCE
COMPAGNIA ITALIANA ECOLOGIA S.R.L.
• European limits for dumping in sewers:
• Sulphates (𝑆𝑂4=)
• Fluorides (𝐹−)
≤ 1000 ppm
≤ 10 ppm
• Local authorities may require to drop this limits till:
≤ 500 or 300 ppm
≤ 6 or 4 ppm
• Sulphates (𝑆𝑂4=)
• Fluorides (𝐹−)
POLLUTING LIMITS FOR WASTE WATER
• Main polluting agents of water :
• Aluminium (𝐴𝑙)
• Sulphates (𝑆𝑂4=)
• Fluorides (𝐹−) (for painting lines)
COMPAGNIA ITALIANA ECOLOGIA S.R.L.
Use special Additives( PURAL F10) • Fluorides (𝐹−):
• Sulphates (𝑆𝑂4=) ≤ 1000 ppm:
• Sulphates (𝑆𝑂4=) ≤ 300 ppm:
Use of greatest volume of water than necessary
Not achieved except strong dilution
LIMITS RESPECT APPROACH
SOLUTION : Use specific technology such PURAL®
COMPAGNIA ITALIANA ECOLOGIA S.R.L. MODERN RINSING MANAGEMENT PERFORMANCES
• DOUBLE OR TRIPLE CASCADE BACK RINSES
• DROPPING AND CARRY-OVER MINIMIZING
• INSTRUMENTAL MANAGING BY CONDUCTIVITY
GOAL: REDUCE WATER CONSUMPTION •
EFFECT: SULPHATES OVERCOME LIMITS •
SOLUTION: Use specific technology such as PURAL®
COMPAGNIA ITALIANA ECOLOGIA S.R.L. DIFFERENTS CONDITIONS OF WATERS FROM ANODIZING
• Natural neutralization: of NaOH and H2SO4 used in workshop
2NaOH + H2SO4 → Na2SO4 (pH = 7)
Balance: 80 Kg of NaOH100% = 100 Kg of H2SO4 98%
- STANDARD ANODIZING LINE:
• Satinized ≤ 80% of production:
• Satinized ≥ 80% of production:
(NaOH or Ca(OH)2) CAUSTIC for neutralization needs
ACID for neutralization needs
- ANODIZING LINE EQUIPPED WITH OXIPUR (ACID RECOVERY UNIT)
• Satinized ≤ 50% of production:
• Satinized ≥ 50% of production:
(NaOH or Ca(OH)2) CAUSTIC for neutralization needs
ACID for neutralization needs
COMPAGNIA ITALIANA ECOLOGIA S.R.L. CURRENT PURIFICATION TECHNOLOGY