Boyd Anderson writes
>Does anyone have any experience using magnesium hydroxide as a neutrializer
>prior to adding DTC in a waste water treatment application?
>
>Will the DTC also remove the magnesium, thus using more DTC than would
>normally be required?
>
>We are using mag. because it gives us a much heavier partical that settles
>faster.  If anyone has found something else that makes a heavier sludge
>with DTC would you provide some feedback?
>
>Thanks,
>
>B.A.
Hi Boyd,
We use Lime (Calcium Hydroxide) as a neutraliser and it settles very
well. You have to keep it in a slurry by constant stirring and pumping
around the dosing circuit to stop it settling out and clogging up the
system. We also add a flocculating agent just before clarifying.

Another key element is to acidify the effluent to crack the ions before
neutralisation.

Can you please enlighten me as to what DTC is?
-- 
Paul Gould
[log in to unmask]
Isle of Wight,UK

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