What is the pH range and also ...
Published by John Salonich, Vice President / Managing Director
What is the pH range and also the alkalinity? Nitrifying bacteria need to have a minimum of 4.5+ mg/L of alkalinity to 1 mg/L N-NH3 to achieve sequential Nitrogen-Ammonia reductions and they need same ratio (4.5::1) of dissolved oxygen for metabolic activity. This is a good way to start if you have the data. As below comment, remember this is a flow thru treatment scheme and adding Nitrifiers from an incubator is a BMP. What other process changes have you made?
1 Comment
1.The pH is changed from about 6.6 to 5.6. Now we have increase the pH from 5.6 to 6.0, the target is about 7.
2.The DO is about 3 ppm, although the DO is varyed from 1.5 to 3.5 ppm.
3.we pump the sludge from other system (which is good to NH3-N reduction) as usually, but this time the NH3-N reduction rate is poor to improve .
Published by Lin JYH-YAN, advanced engineer at FORMOSA PETROCHEMICAL CORPORATION