Waste Water Engineering - Engineering
Q1: PH value of sludge during alkaline regression stage, isA
more than 7
B
less than 7
C
less than 6
D
more than 6.
ANS:A - more than 7 During the alkaline fermentation stage of sludge treatment, the pH value typically increases significantly due to the production of alkaline compounds such as ammonia (NH3) and bicarbonates (HCO3^-) through microbial activity. Therefore, the pH value of sludge during the alkaline regression stage is generally more than 7. The correct option is: a. more than 7 |
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