CIE - Aluminium Elval

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LEADER COMPANY IN WASTE WATER TREATMENT & ZERO LIQUID DISCHARGE PLANTS

PUR-ALL

Technology to remove 2-

-

SO4 , F , Al3+ and COD from the waste water of

ALUMINIUM FINISHING LINES

Main CIE Z.L.D. realizations Greece Aluminium Lamination and Coil Coating Metra in Canada Powder Coating UAE - Estrusion, Anodizing, Powder Coating

... AND WE DO!

General view of ELVAL ZLD plant

CIE Srl - Via Primo Maggio, 20-22 20070 San Zenone al Lambro (MI) ITALY |  +39 02 9810470  info@cieeng.com DUSSELDORF 29 NOV. -1 DEC 2016

Via Primo Maggio, 20-22 20070 San Zenone al Lambro (Milan) ITALY TEL +39 029810470 | FAX +39 02 98175079 info@cieeng.com

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ELVAL GREECE: 750 m3/DAY WATER RECOVERED AND REUSED THANKS TO ZLD PLANT PROVIDED

BY CIE IN 2012

ELVAL COLOR is a leading European coated aluminum manufacturer.

PURAL

TO ZLD

DEOLING UNIT

(FLUORIDE /SULPHATES/ COD REMOVAL)

SAND FILTER

SLUDGES & SOLIDS

CHARCOAL FILTER

ELVAL WORKSHOP

CRYSTALYZER

TO REUSE

 COIL COATING LINE  FOUNDRY  ROLLING MILLS  COOLING TOWER

DISINFECTION

Z.L.D. 750 m³/day ZERO LIQUID DISCHARGE

DISTILLED WATER

ULTRA FILTRATION.

MULTI EFFECT EVAPORATOR (3 STAGE)

REJECT

HIGH PRESSURE REVERSE OSMOSIS

PERMEATE

Flow chart of ELVAL ZLD plant realized by CIE

Triple effect Evaporator saving up to 66% of energy

In 2012, ELVAL installed the first European Zero Liquid Discharge (ZLD) plant at its factory located in Inofita.

The operation of the ZLD plant enables ELVAL to process all of their waste streams from lamination to coil coating operations in a single Waste Water Treatment Plant (WWTP). The plant designed and installed by CIE is able to treat and recycle 750 m3/day of their waste waters, allowing for a savings of greater than 98% of the total water consumption.

The system incorporates a number of innovative CIE technologies that allow for 90% recovery of the water through Ultrafiltration (UF) and High Pressure Reverse Osmosis (HPRO) units. The 10% HPRO reject stream is recovered through a cost effective Triple Effect Vacuum Evaporation unit. The key to the overall system’s effectiveness is the use of the CIE patented PURAL process that combines both conventional physical chemistry with unique proprietary chemicals able to remove more than 80% of the sulphates and 98% of fluorides. The overall system performance is able to deliver excellent water quality (conductivity <20 microSiemens and pH of 7).

The CIE plant is able to achieve 98% water recovery and recycle by reducing the aluminum and calcium salts prior to the evaporator, which is able to operate with both hot water or steam and can utilize waste heat from other operations, including cogeneration to further reduce energy consumption.

U.F. and Super R.O. double line

ELVAL technicians have always made it a priority to operate their waste treatment facility in accordance with environmental directives. The closeness to one of the largest rivers, and its relevant restrictions, influenced ELVAL to investigate technologies that would assist them to achieve no liquid discharge. Hence, this investigation lead to their decision to install a large ZLD plant from CIE that provides ELVAL with both a technical and economical solution to their situation.

Finally, the ZLD plant incorporates the use of CIE’s special solids removal system that provides a solids cake that is non-toxic and able to be disposed of in a suitable landfill at a low waste disposal cost.

Since its installation the CIE system has been able to save ELVAL more than 250,000 m3/year of water at an operating cost comparable to conventional waste treatment plants operating at similar environmental limits.

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