Anodizing processes use high volumes of acid. Without a reliable acid recovery system, significant wastewater is generated, which requires treatment. Continuous Chemical Recovery by Ecolab® Ultra-Pure Water+ is the perfect solution for acid recovery, reducing treatment costs and optimizing equipment life.
Continuous Chemical Recovery by Ecolab Ultra-Pure Water+ reduces the volume of wastewater with no additional chemicals and can be installed directly in the process line as it is fully protected from liquid projections.
Continuous Chemical Recovery
Anodizing Process Water Treatment Equipment
How It Works
Ecolab Ultra-Pure Water+ uses a special anion exchange resin to separate and control the concentration of metal salts in the solution. While treating the anodising bath, free acids are held back by the resin, while metal salts are allowed to pass through the ion exchanger. During regeneration of the media with water, the acidic electrolytes are released and returned to the anodising bath while the metal salts are wasted. This process is repeated continuously until the plant is turned off.
The anodising bath solution is pre-filtered and collected in the buffer tank for volume control. The filtered acid solution is then pumped upwards through the Continuous Chemical Recovery ion exchange column, filled with a special acid retaining resin. In this process, the acid will be retained by the resin and the metal salt solution will pass through and be discharged to the sewer.
Fresh water previously stored in the fresh water tank for volume control will be pumped, counter flow, through the Continuous Chemical Recovery ion exchange column to remove the acid from the resin. In this process, the acid which was retained by the resin, will be freed and returned to the anodising bath. This process will be repeated each time a low-level signal is received from the buffer tank.
Equipment Details
In some industries, such as the aluminium industry, a high volume of acid is used for the anodizing. Acids, water and energy consumption, as well as limitation of wastewater to be treated, are key elements that have to be conscientiously managed through a reliable system that optimises control and reduces production costs.
With Ovivo by Ecolab Ultra-Pure Water+ Continuous Chemical Recovery continuous regeneration and purification process, anodizing baths no longer have to be discharged and replenished, eliminating the need for neutralisation with sodium hydroxide solution or lime. Furthermore, the investment in new batches of sulphuric acid will become obsolete.
Other key features and benefits of Continuous Chemical Recovery include:
- Wastewater reduction up to 50 percent compared to conventional equipment
- Designed for a 100 percent capacity expansion
- Reduced energy and chemical costs
- Possibility to expand the Continuous Chemical Recovery 50 model to a Continuous Chemical Recovery 100 equipment capacity without additional capital investment
OvivoPUR50 | OvivoPUR100 | OvivoPUR250 | OvivoPUR500 | |
| Wastewater flow rate (l/h) | 83 l/h | 165 l/h | 309 l/h | 619 l/h |
| Anodizing bath flow rate (l/h) | 150 l/h | 300 l/h | 560 l/h | 1125 l/h |
| Aluminum Removal* (approx.) (g/h) | 420 g/h 525 g/h 630 g/h 788 g/h | 840 g/h 1050 g/h 1260 g/h 1575 g/h | 1575 g/h 1969 g/h 2363 g/h 2953 g/h | 3150 g/h 3938 g/h 4725 g/h 5906 g/h |
| Utility Requirements (V/Hz) | 120 - 230 V 50 - 60 Hz | 120 - 230 V 50 - 60 Hz | 120 - 230 V 50 - 60 Hz | 120 - 230 V 50 - 60 Hz |
| Dimensions (mm) | Length: 1300 mm Width: 800 mm Height: 1930 mm | Length: 1350 mm Width: 800 mm Height: 1930 mm | Length: 2160 mm Width: 1600 mm Height: 2200 mm | Length: 2160 mm Width: 1600 mm Height: 2250 mm |
| Weight (approx.) (kg) | 350 kg | 350 kg | 850 kg | 850 kg |
| Max operating temperatures | 35°C | 35°C | 35°C | 35°C |
Get In Touch with Us
Please Give Us a Call
With unparalleled expertise and cutting-edge technology, we partner with customers to deliver world-class results and optimized operations. Contact us to learn how we can help you.
Ecolab Inc.
1 Ecolab Place
St. Paul, MN 55102
Ecolab Customer Service:
Phone: +1-800-352-5326
Nalco Water Customer Service
Phone: +1-800-288-0879
Ecolab Ultra-Pure Water+
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