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Reduce Water Analysis Parameters

In my work place, there are some trouble in Waste Water Treatment. The number of some parameter like BOD, COD, Zn, Cu, Phenol are out of standard limits. How to reduce it?

Alif Puji Raharjo
- Jakarta, DKI Jakarta, Indonesia
2004

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Hello, Alif. You may need to retain a wastewater treatment consultant to look at the situation to prepare a report expressing the problem lucidly and numerically. Until you can get a real quantitative handle on what the problems actually are, it is difficult to take meaningful action toward correcting it. Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2004

The first thing that I would do would be to check the waste water ph. If the pH is less than 8.00 retreat it and raise the pH with caustic soda [affil links] . Typically the best pH range to reduce copper is 9.00. Also what ever polymer you are using be sure to check the settings on the pumps. you might just need to increase your floc. There is chemical out there that can reduce all your metals at a lower pH and that is called Namet or Kermet. (Be sure to read the MSDS).

Chris Rademaker
- Phoenix, Arizona, US
2005

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The pH check, retreat, and floc check sounds like very good advise for a plating wastewater treatment system, Chris. Thanks! But Namet should be used exclusively for final polishing, not to enable treatment at low pH. The spectacular fish kill at the White river in Indiana in 1999-2000 apparently was caused primarily by excessive use of Namet (DTC).

Although finishing.com is supposed to be about industrial metal finishing, we probably let some things slide under the wire, and considering the fact that Alif mentions phenol and BOD issues, I'm not sure that his treatment system is too similar to a wastewater system for plating waste.

I believe that very powerful oxidizing conditions (like high temperature-pressure oxygenation) are required to break phenol down into inorganic constituents. Hopefully Alif will get back to us with some more detail.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2005

Alif.

If you send me a complete list of your wastewater analysis, I can offer you a solution for your wwtp.

The ECP it is the most powerful solution for all types of wastewater. We must know the analysis, flow rate and EPA requirements before discharging the water.

Regards

Damian Dinu
SC INGO PROD SRL - Constanta, Romania
2005