RECOVERY AND EXPLOITATION OF SPENT STRIPPING BATHS
RECOVERY AND EXPLOITATION OF SPENT STRIPPING BATHS
Recovery and exploitation of aqueous solutions of zinc-rich spent hydrochloric acid, derived from galvanized material stripping or galvanizing processes (CER 11.01.05* Pickling acids)
Thanks to an exclusive patented process, for many years Sanimet S.p.A. has been the only Italian company able to fully exploit the stripping acids generated by the hot galvanizing process (CER 11.01.05*). In addition to allowing the hot galvanizing sector to avoid the increasing stripping solution disposal costs, this exclusive process allows full recovery, transforming the elimination of HAZARDOUS waste into an environmentally friendly manufacturing process.
Waste composed of spent hydrochloric acid solutions that have been contaminated by zinc from stripping processes
| Iron concentration (g/L) | Fe < 25 |
| Lead concentration (g/L) | Pb < 0.5 |
| Zinc concentration (g/L) | Zn > 260 |
| Free hydrochloric acid concentration (g/L) | HCl < 10 |
| Sulphate concentration (g/L) | SO4— < 1.0 |
- Solutions free from fluorides
- Solutions free from foreign bodies
- Solutions free from sludge on the bottom
- Solutions free from oil phase on the surface
It is also possible to recover waste that is outside the limit values, quotation on request
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