netneut
finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing


Finishing.com has been free for 22 years,
but without net neutrality we could soon
cease to exist. Do us a solid, click on
the banner, and contact congress today!
HomeFAQsBooksHelpWantedAdvertiseForum
topic 8958

Reducing NH3 and TKN in wastewater


(2001)

Q. I have been working with a facility that is concerned about wastewater surcharges for ammonia and TKN. The plant manufactures electrical relays. Everything going through gets Cu-CN plated, some also then get Ni, a few get Sn instead. They use a DI rinse system for everything after the Cu tanks. Any ideas to reduce the NH3 and TKN?

Richard Meisenhelder
Kentucky Pollution Prevention Center-University of Louisville - Louisville, Kentucky

(2003)

Q. Interested in how the TKN was dealt with- we currently have an issue to address as well.

Jim Cook
auto parts manufacturing - Belleville, Ontario


October 28, 2009

Q. The city has tested our wastewater stream and our TKN levels are outside of tolerances. I am interested on methods to reduce this level.

Robert Franklin
poultry equipment manufacturing - Gainesville, Georgia


June 11, 2012

A. Make sure that you segregate domestic wastewater from process wastewater and discharge them separately. Due to ultra-low flush toilets, sewage is much higher in ammonia than POTWs believe.

Jim Clemmer
- Greenville, South Carolina



March 31, 2008

Q. I'm working with a company that has continually had problems with TKN (total kjeldahl nitrogen) in their storm water. Does anyone know of methods or BMPs for reducing TKN in storm water

Beth Lancer
Consultant - New Haven, Connecticut


April 3, 2008

A. Hi, Beth. We don't really get involved in issues of this type unless it involves a metal finishing facility. But TKN indicates organic material which must be digested (with trickling filter, activated sludge, etc.). It would seem that if the storm water has too much TKN for discharge, you need to either do biological treatment (a huge job) or help this company stop allowing the storm water to accumulate organics. What do they manufacture, and what can the storm water pick up?

Regards,

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


April 4, 2008

A. I would start by looking for sources such as fertilizer or urea or?
I would be very interested in their collection site methods.

James Watts
- Navarre, Florida



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.