Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-16-2008, 10:13 PM   #1
2 Rivet Member
 
1958 18' "Footer"
Sebastopol , California
Join Date: Jul 2006
Posts: 27
Combining Black and Gray Water

I would like to add a holding tank to my AS. At this time it doesn't have a black or grey tank. I posted earlier asking about a recirulating toilet, not going that route! Is there any other draw backs to having one tank for black and grey water besides lack of capacity? Smells thourgh the pee trap? Anything I'm not thinking of? I have a small AS, 18 footer. No shower, just a sink and a toilet. I can safely fit a 16 gal. tank. 90% of my camping would be done with full hook ups.

Thanks in Advance
Greg
__________________

__________________
60's Iron is offline   Reply With Quote
Old 08-16-2008, 10:21 PM   #2
_
 
. , .
Join Date: Dec 2004
Posts: 8,812
hi greg...

with a small tanks and no shower, capacity isn't a big issue.

mixing sink water into the black soup can alter the normal digestive process...

that is supposed to happen in a healthy black tank.

it is probably a minor issue in this case.

otoh, with full hookups, u will still need to keep the drain valve closed most of the time...

so enough fluid accumulates IN the tank to move the poop through.

with separate draining lines the wash water can be mostly left open when hooked up...

that become a very bad idea on the black tank side.

if not planning to boondock, dumping wash water (where permitted) isn't an issue.

yes the sink traps can leak odors as the water seal evaporates.

cheers
2air'
__________________

__________________
all of the true things that i am about to tell you are shameless lies. l.b.j.

we are here on earth to fart around. don't let anybody tell you any different. k.v.
2airishuman is offline   Reply With Quote
Old 08-16-2008, 10:23 PM   #3
Rivet Master
 
purman's Avatar
 
1968 28' Ambassador
Cedaredge , Colorado
Join Date: Jul 2008
Posts: 2,542
Our friends have an 04' Safari with a combine 70 gal gray and black tank.. They like it. Makes life easy... It is located just rear of the axels, maybe part under them...
__________________
Jason

May you have at least one sunny day, and a soft chair to sit in..

2008 5.7 L V8 Sequoia
AIR # 31243
WBCCI # 6987
FOUR CORNERS UNIT
purman is offline   Reply With Quote
Old 08-16-2008, 10:26 PM   #4
Site Team
 
azflycaster's Avatar
 
1975 25' Tradewind
Dewey , Arizona
Join Date: Mar 2005
Posts: 12,127
Images: 62
Blog Entries: 1
The only issue I could see is that you could not dump the gray on the ground (it is legal some places) if you were on an extended boondock. Since you have no shower your gray water would be minimum. As long as you have water in the P-trap, you should have no odor backing up.
__________________

Richard

Wally Byam Airstream Club 7513
azflycaster is online now   Reply With Quote
Old 08-17-2008, 06:45 AM   #5
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,193
I added the kitchen sink water to the black tank in our Overlander. The bathtub and bathroom sink water are not as nasty as the stuff coming out of the kitchen and toilet.
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 08-17-2008, 09:03 AM   #6
4 Rivet Member
 
63Silver's Avatar
 
1963 28' Ambassador
Smiths Grove , Kentucky
Join Date: May 2008
Posts: 406
Images: 43
It seems like a great deal of trouble to basically replumb, refit and make sure everything drains and vents properly. We do not have a gray tank but use a mobile blue tank instead and have found it very easy to use. We looked into adding a gray tank but could not find ample space for one large enough to make it worthwhile. If you are only planning to boondock occassionally I would consider the blue tank. Just my opinion. Good Luck!

63silver
__________________
63Silver is offline   Reply With Quote
Old 08-17-2008, 10:06 AM   #7
Aluminut
 
Silvertwinkie's Avatar
 
2004 25' Safari
. , Illinois
Join Date: Feb 2003
Posts: 10,334
Combined tanks are a love it or hate it type relationship for most. I don't care for them due to the way I camp, mostly boondocking and non-hookups.

The factory did the combo tank and then quickly retreated from it.

The main factor as I see it is that if you use the shower, it is the single largest use of water. If you do not go to places with full hookups or at least sewer hookup, the issue is compounded because now say yer in a state forest campground or a place where you normally could let your gray water out, you can't do that when it's mixed with raw sewage.

If you typically go to places with a least sewer hookup and/or don't use the shower that freq, then you should be fine.

I have a 39 gal fresh tank and a 39 gal separate gray tank. Using the shower conservatively, I was able to squeeze 4 days out of it with two people. My black tank is only 18 gallons. Having it separate has allowed me to not fill the black tank with 3 campers for well over a week. In these cases I'm in a state forest campground in the middle of nowhere and buy about 10-20 gallons of 2.5 gallon jugs at the local store to continue to fill the fresh tank as needed (since town is 30 miles one way). As you can imagine, if I had a combined tank, I'd be in some trouble because I can at this place dump my gray tank. There are no dump facilities at this rustic campground for my black tank, so in this case, having the dual tanks works very well.
__________________

__________________
Computers manufactured by companies such as IBM, Compaq and millions of others are by far the most popular with about 70 million machines in use worldwide. Macintosh fans note that cockroaches are far more numerous than humans and that numbers alone do not denote a higher life form. -NY Times 11/91
Silvertwinkie is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Combining Black and Grey Tanks thecatsandi Waste Systems, Tanks & Totes 3 04-12-2007 11:57 PM
Black and gray water tank Judy Barde Waste Systems, Tanks & Totes 11 12-11-2006 01:43 PM
Gray Water Diverted Into Black Water Tank Chaplain Kent Waste Systems, Tanks & Totes 5 06-14-2006 07:38 PM
no gray or black water holding tank pahadley LP Gas, Piping, Tanks & Regulators 8 11-11-2004 08:11 PM
Combined Gray and Black Water? malconium Waste Systems, Tanks & Totes 30 08-07-2004 11:43 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:08 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.