Macerator bathroom

[Iceni John]

Black dumps 1st, then we dump grey into black - that 3" blast from one tank to another will move mountains if there were underwater earthquakes...

I had Ronco Plastics spin-weld in a small threaded fitting in the top of my black tank directly above its 3" outlet.   I can now either pump gray water directly into the poo tank straight down on top of any Mounds Of Doom that may be accumulating there, or jet city water through that same inlet.   (Don't worry, I have check valves there to prevent any possible cross-contamination.)   My plan is to always keep enough liquid in the poo tank to prevent concretions there, but my low-flow loo won't introduce sufficient flush water by itself to stop Bad Things from happening.

John   

[blue_goose]

I have been using a Macerator toilet for about 5 years with no problem.  It uses more water than the air flush that was in our last coach.
Jack

[Jim Blackwood]

RV makers recommend that you run some water into the black tank after dumping and that you insure the tank is 3/4 full before dumping, even if it means running in fresh water first. That volume creates a good flow to carry any solids out. BTW, solids in the waste system liquefy faster than you might think. Ask any city sewer maintenance person if he's ever seen a turd. Nasty water, yes. Gravel, and various objects. But turds? Don't bet on it. (How does gravel get in there? I have no idea, but it does.) Also a fair quantity of water goes in if you drain the lizard there regularly. Probably the best practice would be to have a minimum of 1" of fluids in the tank to promote liquefaction.

Prof

[dtcerrato]

My dad was superintendent of municipal sewer dept. Some of the biggest & best tasting tomato plants, corn, & watermelon used to grow out of the "drying beds" of the large municipal system. So in addition to what Jim said one can also see corn, and watermelon seed in tanks because humans don't digest them. By the way Art Carney of the Honeymooners used to be my favorite because as I was growing up I could relate to him through my dad's profession. How about another little relish of info - oh if Pop could only be here to know he was on the board - in pop's early years at the sewer dept. he would fish an adjacent canal for Tarpon which is a trash bottom feeder and trophy fun to catch. He started throwing some small ones in the settling tanks - many years later those settling tanks went down and when they drained them - yep you might have guessed it - the lines were clogged with tarpon. 

[eagle19952]

one can also see corn, and watermelon seed in tanks because humans don't digest them.

Add less than fully chewed sunflower seeds.

[chessie4905]

Talking about thread drift..😕

[Geoff]

I think it is turd drift...

[Jim Blackwood]

"When the log rolls over we'll all be dead." I KNOW you guys have heard that one.

Jim