Question

want for wale
coagulant
1
The optimum pH for alum as a
waste water treatment is
@ 8.0
( (6) 4.0
(c)
4.5-6.5
(d) None of the above​

Answer 1

Answer:

Each coagulant has a narrow optimum operating pH range. For example, alum tends to work best at a dosed-water pH of 5.8-6.5. If the pH is lower or higher than this optimum, then problems of high residual colour and aluminium or disinfection by-products may occur in the finished water.

Explanation:

Option. C

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