Process and installation for purification of washing waters of chemical plants
AssigneePieco GmbH
InventorsPietro Medolago Albani, Giovanni Andrea Medolago Albani, Federico Alessandro Medolago Albani, Alessandro Medolago Albani
Life of this patent
Estimating the term…
Abstract
A process for purifying washing waters of a production plant of the cosmetics sector includes subjecting the washing waters to an ultrafiltration treatment that produces an ultrafiltration concentrate and ultrafiltration water, and subjecting ultrafiltration water to a biological treatment with separation of sludges to be disposed of or further treated and treated water to be disposed of or to undergo subsequent treatments.
Claims10
A process for purifying washing waters of a production plant of the cosmetics sector, the process comprising:
- subjecting the washing waters to an ultrafiltration treatment in an ultrafiltration section, wherein the ultrafiltration treatment produces an ultrafiltration concentrate and ultrafiltration water;
- and
- subjecting the ultrafiltration water to a biological treatment with separation of sludges to be disposed of or further treated and treated water to be disposed of or to undergo subsequent treatments,
- wherein the ultrafiltration concentrate is subjected to an evaporation treatment that produces a waste to be disposed of and evaporation water that is again fed into the ultrafiltration section.
A system for the purification of washing waters of a production plant, the system comprising:
- an ultrafiltration section to subject the washing waters to an ultrafiltration treatment which produces an ultrafiltration concentrate and ultrafiltration water;
- a biological treatment section, operatively connected downstream of the ultrafiltration section, to subject the ultrafiltration water to a biological treatment with separation of sludges for disposal or further treatment and treated water for disposal or subsequent treatments;
- and
- an evaporator-concentrator operatively connected to the ultrafiltration section to receive incoming ultrafiltration concentrate and perform an evaporation-concentration after which is obtained a waste to be disposed of as special waste and evaporation water that is again fed into the ultrafiltration section.
Dependencies are inferred from the claim text.