Re: Sulphuric acid dilution

From: <waliasunil@tpc.co.ae>
Date: Tue Mar 30 2004 - 02:02:00 EST

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                     "Steve
                     McKenzie"                               To:    
<a href="/group/PipingDesign/post?postID=5ZcOu4YqeQXeXOBF845UupARQpbEnn5RYo2l1fb7O-_SveQKodmTooVUA1DNAwGuNi97pNTkVdChjU5rONsyXIts">PipingDesign@yahoogroups.com</a>
                     <mechproj@xtr                           cc:
                     a.co.nz>                         Subject:    [PipingDesign]

Sulphuric acid dilution

                     03/29/2004
                     02:07 PM
                     Please
                     respond to
                     PipingDesign

Hi Guys

I am looking at a pH correction system for a wastewater treatment plant. Occasional alkaline "event" inflows require an acid dosing /pH correction system to be installed to keep the downstream bio-systems alive and well.
At present the inflow is around 70l/s minimum. I will need to dose at about 10cc/sec based on 98% H2SO4, although for handling reasons this will probably be changed to around 75%.
I envisage "dribbling" the acid into the inflow through a plastic quill with no special arrangement made for mixing or heat dissipation. However some detail design will be required to validate this approach. Before I commence the detail design of the mixing area, I thought it may save some time by asking if any of you guys have done this, what works, what doesnt etc.

Thanks

Steve

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