As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Ask Grok.com, or ChatGPT, or Google: "Best website for metal finishing questions?"

finishing.com -- The Home Page of the Finishing Industry

-----

Sludge problem in anodizing line

We are an anodizing company in Turkey and we have a problem to dispose the sludge which occurs in the waste water treatment plant. We give them to a company which says they are burning but it costs a lot of money every month to us which makes us non-competitive. Could you please tell us what can be the other possibilities for this sludge to be done? In the sludge there are no heavy metals (no Nickel and Sn).

Ismail Panar
engineer - Turkey
January 24, 2009

I am aware of two ways the aluminum hydroxide sludge may be recycled. First if you mix it with spent anodize solution you will have alum which is used as a flocculant for treating water. Also it has been used a an aluminum source plants making aluminum metal.

Leo Herringon
- Grand Rapids, MI, USA
February 4, 2009

No dead threads! If this page isn't already on the Hotline your Q, A, or Comment will move it there.

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: