Zinc Levels higher than permited
Zinc Levels higher than permited
(OP)
Good afternoon,
I oversee a very small industrial wastewater process that has permitted levels to be maintained. My last two reports have shown higher than allowed Zinc levels and my attempts to correct have failed. Our system is very simple in design, we collect our water in a 7000 gallon tank maintain the pH at 10.25, transfer to a 700 gallon retention tank introduce a flocculants called Klaride. After 45 minute of retention, we then transfer small amounts to a clarifier and gently blend in a polymer to get the collagulation process started the material then falls out and the clear water flows over the weir to our discharge to be treated with sulfuric acid for a pH adjustment between 7-8.5.
We have been advised to try a Chelant Bond Breaker. This is new to me and wanted to get another opinion. I have also heard we are too high on our pH. I was told to keep it this high to keep the zinc in solution.
Thank you for your time.
2571
I oversee a very small industrial wastewater process that has permitted levels to be maintained. My last two reports have shown higher than allowed Zinc levels and my attempts to correct have failed. Our system is very simple in design, we collect our water in a 7000 gallon tank maintain the pH at 10.25, transfer to a 700 gallon retention tank introduce a flocculants called Klaride. After 45 minute of retention, we then transfer small amounts to a clarifier and gently blend in a polymer to get the collagulation process started the material then falls out and the clear water flows over the weir to our discharge to be treated with sulfuric acid for a pH adjustment between 7-8.5.
We have been advised to try a Chelant Bond Breaker. This is new to me and wanted to get another opinion. I have also heard we are too high on our pH. I was told to keep it this high to keep the zinc in solution.
Thank you for your time.
2571





RE: Zinc Levels higher than permited
The sulfide precipitation process will provide good effluent quality even if chelating or complexing agents are present in the water.
http://www.pfonline.com/articles/030102.html
http:/
http://www.nmfrc.org/bluebook/sec624.htm
RE: Zinc Levels higher than permited
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Gary Schreiber, CWS VI
The Purolite Co.
RE: Zinc Levels higher than permited
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
RE: Zinc Levels higher than permited
RE: Zinc Levels higher than permited
AquaPerl by Atlas environmental products (819-565-9688) and obtained >98% Zn reduction with that.
Global Ionix system: www.globalionix.com
Moonstone RSA: www.moonstoneinc.ca
Good luck!