fvincent
Mechanical
- May 14, 2002
- 117
Dear friends,
A company I have been working for is testing in the second stage of its wastewater treatment plant the use of Klaraid IC1176L (based on polyaluminium chloride) to obtain sulfate removal. The sulfate content of the influent is around 1200 ppm (mainly as calcium sulfate). Tests performed with a dosage of around 50 ppm of Klaraid seems to have caused a reduction in the sulfate level down to 250 ppm (pH around 7). Is that possible? All that I read about sulfate removal mentions the use of aluminium source in a ratio 0.67:1 (al/SO4), operation at pH 10.5 to obtain etringite. Thanks a lot!
fabio vincent
A company I have been working for is testing in the second stage of its wastewater treatment plant the use of Klaraid IC1176L (based on polyaluminium chloride) to obtain sulfate removal. The sulfate content of the influent is around 1200 ppm (mainly as calcium sulfate). Tests performed with a dosage of around 50 ppm of Klaraid seems to have caused a reduction in the sulfate level down to 250 ppm (pH around 7). Is that possible? All that I read about sulfate removal mentions the use of aluminium source in a ratio 0.67:1 (al/SO4), operation at pH 10.5 to obtain etringite. Thanks a lot!
fabio vincent