Hi, you may be observing the ...

Published February 5, 2023 20:10 by Gary Brown, Water Practitioner at Dikubu Water

Hi, you may be observing the effects of nitrification (conversion of ammonia to nitrates under aerobic conditions) since alkalinity is consumed. If the inflow alkalinity is low and is also being consumed, the pH can decline

check out these parameters, you may need to add alkalinity, typically lime or soda ash,

if you have the knowledge and capabilities, you can create anoxic conditions and stimulate denitrification, this counters alkalinity consumption during nitrification

good luck

4 Comments

Gary Brown --Feed Alkanity: 856ppm, pH:7.43, Ammonical Nitrogen: 7.20ppm

Published February 11, 2023 10:04 by upendra panchal, Water treatment Consultant at Self

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I totally agree with Gary, This phenomena of course becomes more pronounced if the upstream water source that feeds the system is a soft, low alkalinity water. The lower the feed alkalinity, the more dramatic the problem will be.

Published February 6, 2023 07:56 by Andre Visser, Process Engineer at Water Engineering Consult

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Nice, complete answer.

Published February 6, 2023 02:43 by Mark Milne, Wastewater Superintendent

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Thanks Gary brown for your suggestion.

Published February 6, 2023 02:15 by upendra panchal, Water treatment Consultant at Self

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