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April 1998

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Subject:
Re: sludge reduction and disposal
From:
Bob Mesick <[log in to unmask]>
Reply To:
[log in to unmask]
Date:
Mon, 20 Apr 1998 09:32:09 +0000
Content-Type:
text/plain
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>
> Date:    Mon, 20 Apr 1998 15:48:19 +0500
> From:    rameshl <[log in to unmask]>
> Subject: sludge reduction and disposal
>
> Dear Technetters,
> May I have the procedures if any to treat and dispose the sludge
> generated during effluent treatment. The sludge  mainly contains
> hydroxides of tin, copper, iron and lead after subjecting to
> nuetralisation by lime. Any information in the matter is highly
> appreciated. Regards, L. RAMESH. [log in to unmask] fax: +
> 91-08221-26641 Ph:  + 91-08221-26618, 26619
>
> DR. L.RAMESH,
> Indal Electronics Ltd.,
> 12 A, Industrial Area,
> Nanjanagud  571 301,
> Mysore,  INDIA.
> Tel: +91-8221-26618, 26619, 26375, 26584 Extn: 345
> Fax: +91-8221-26641
> email: [log in to unmask]
> website: www.indalpcb.com
>


Dr. Ramesh,

You might be better served by asking this question on the compliance
net form.  You will get a lot more answers.

In the mean time, the best way to deal with sludge is not to
generated it.  Lime treatment is especially a problem as it generates
a lot of additional volume.  It also contaminates the sludge with
calcium which makes other forms of recovery difficult.

I have an article coming out in one of the trades next month
comparing treatment strategies for PCB shops.  You can see a
preliminary copy of it at www.remco.com/pcb.htm.  It covers many of
these issues.


Best Regards,

Bob Mesick
Remco Engineering
Water and Wastewater Treatment Systems
http://www.remco.com
[log in to unmask]

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