No registration or passwords; no pop-up ads -- just aloha, fun, & answers.
(as an eBay Partner & Amazon Affiliate earns from qualifying purchases).
Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Advertise
 
Help
Wanted
Current
Q&A's
Site 🔍
Search
pub  Where the
world gathers for metal finishing
Q&As since 1989



-----

Statistics on electroplating effluent



Hi Friends,

I am a graduate student doing my thesis on electroplating industry. I am badly in need of some data. what I basically need is as follows: Concentrations of different metal ions in typical electroplating waste stream, say from tin plating line or from some plants itself. I would very much appreciate if any one could send me the above information or at least pointers to where I will be able to find this information. Thank you, Srini.

Srinivas G [last name deleted for privacy by Editor]
Graduate Research Assistant, University of Houston, Houston, Texas
1995



Hello, Srini.

Do you mean before or after treatment? In the U.S., all plating shops must meet at least the effluent standards published in EPA 40CFR413(Code of Federal Regulations). Most shops must meet the tougher standards of 40CFR433. You can find these on line. In general, we're looking at about 0.5 ppm to 4 ppm, depending on which standard applies and what metal you're looking at. Ironically, you mentioned tin which is, I believe, the only common unregulated metal.

It is more difficult, and a pretty wild extrapolation, to give you typical effluent numbers before treatment, but 5 to 50 ppm is the best estimate I can give you for rinsewater from my experience. When a tank is dumped, if it were not treated, the numbers could easily be 50,000 ppm. Good luck.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
1995




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

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:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"