Date: Thu, 19 Aug 2010 11:01:26 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Dan Crowl <crowl**At_Symbol_Here**MTU.EDU>
Subject: Re: Cupric Sulfate Solution Disposal
In-Reply-To: <9F3B003643FC5F42930EFB83E276C86001696733C14E**At_Symbol_Here**HNXEXCH.hendrix.local>

Hi Anthony,

A general waste disposal guideline that I use for liquid waste to the 
POTW is:

BOD:  200 mg/liter max
COD:  300 mg/liter max
Benzene:  0.050 mg/liter max
BETX:  0.750 mg/liter max
Temperature:  no greater than 104 deg. F
Ph:  no less than 5, no greater than 12.

Please be advised that there is a lot of local variation on this.

The chemical oxygen demand (COD) is probably the issue you will need to 
deal with, although this is more relevant for organic rather than 
inorganic compounds.

Dan Crowl
Michigan Tech

On 8/19/2010 10:52 AM, Bradley, Shelly wrote:
> City Sewer Ordinance here allows discharge to sewer system of copper at
> 2 ppm or less.
> Shelly Bradley
> Instrumentation Specialist
> Laboratory Development Assistant
> Campus Chemical Compliance Director
> Chemistry Department
> Hendrix College
> Conway, AR 72032
> (501) 450-3812
> bradley**At_Symbol_Here** 
> ------------------------------------------------------------------------
> *From:* DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**] *On Behalf
> Of *Anthony Santoro
> *Sent:* Thursday, August 19, 2010 9:12 AM
> *To:* DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
> *Subject:* [DCHAS-L] Cupric Sulfate Solution Disposal
> Hello,
> I am curious as to how others may be handling dilute solutions of cupric
> sulfate. Do you drain dispose if it is a very low concentration? At what
> concentration would you consider managing this solution as hazardous waste?
> Regards,
> Anthony

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