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- Xref: sparky misc.consumers:22522 misc.consumers.house:17344 misc.kids:33352
- Newsgroups: misc.consumers,misc.consumers.house,misc.kids
- Path: sparky!uunet!panther!mothost!schbbs!EMN002@email.mot.com
- From: EMN002@email.mot.com (Mary Beth Northrup)
- Subject: Re: Emptying Water System in Unused House
- Organization: Motorola, Inc. Plantation, FL
- Distribution: usa
- Date: Mon, 25 Jan 1993 15:04:28 GMT
- Message-ID: <1993Jan25.150428.22372@schbbs.mot.com>
- References: <C19nM2.Fp5@panix.com>
- Sender: news@schbbs.mot.com (Net News)
- Nntp-Posting-Host: 145.2.79.63
- Lines: 53
-
- In article <C19nM2.Fp5@panix.com>, dannyb@panix.com (Daniel Burstein) writes:
- >
- > >>
- >
- > >Antifreeze (a glycol ether) is biodegradable and can be broken down by the
- > >local municipal water treatment plant (when reasonably well diluted).
- > >If you pour it down a storm sewer, it's going straight into the
- > >environment in a concentrated form which won't easily degrade. So,
- > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- > >it's much better to get rid of it by pouring into the sanitary sewer than
- > >into a storm drain or septic tank.
- >
- > >Mary Beth Northrup
- > >EMN002@email.mot.com
- >
- > umm, well, let's see now. you pour one gallon of antifreeze (we'll forget
- > the percentage figures here) into the sewer. A small amount (say, 1/2/
- > inch) of rain occurs. that single sewer inlet drains an area of 100*20
- > feet, or 2,000 sq ft.
- >
- > volume of rain water draining into that single point is 2,000 ft *0.5
- > inch, or roughly (don't have slide rule handy) 80 cubic feet.
- >
- > one gallon is about 0.13 cubic feet, so you have a 1/750 dilution, just
- > based on that one single spot. by the time it actually gets anywhere near
- > the final dumsite, of course, dilution is far greater.... (unless of
- > course it was something thick that didn't come apart)
- >
- > dannyb@panix.com
- >
- >
-
- Let me explain myself a little better -
- The city treatment plant has activated sludge with bacteria that's there
- just to break down sanitary effluent. Most glycol ethers like antifreeze
- are also broken down well by this bacteria (as long as the loading isn't
- too high). The storm sewer, although loaded I'm sure with all types of
- critters, isn't designed for this process like a treatment plant. Also,
- it isn't good practice to pour ANYTHING down the storm sewer. That antifreeze
- no doubt contains other contaminants like lead that should not be introduced
- directly into the environment. (When diluted with all of the other water
- going into the treatment plant, the lead would probably be undetectable
- at that point).
-
- Hope that clears it up a little. An even better alternative would be to
- collect the antifreeze and take it to a local collection center (if one
- exists) to dispose of it other ways. But, if you have no other alternative,
- the sanitary sewer is a more environmentally-friendly disposal option than
- the storm sewer.
-
- Mary Beth Northrup
- EMN002@email.mot.com
- >
-