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Buffered water 6-7

20

0.1

8:1

Raw waste water 6.5-7.5

15

0.2

9:1 -10:1

Secondary effluent 6.5-7.5

11.2

0.1

8:1 - 9:1

Tertiary effluent 6.5-7,5

9.2

0.1

8:1

Lime clarified raw

waste water, filtered 7.0-7.3

11.2

0.1

9:1

Stasuik et al., (1973) has studied the required contact time for complete dechlorination of both free and combined chlorine. They found that 10 minutes were sufficient.

0 0

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