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Ot: Dishwashers
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tooki:

--- Quote from: thm_w on December 30, 2020, 09:33:14 pm ---
--- Quote from: tooki on December 30, 2020, 05:28:37 pm ---Ummmm... what? Bosch dishwashers work like pretty much every European dishwasher: filter screens of various mesh sizes are placed ahead of the recirculating pump, such that debris is trapped and doesn’t clog the spray arms. Then, when draining, water back-flows across the screens, releasing the debris into the wastewater, where it is pumped out. Only massively large debris like stays behind. Nothing to do with siphons. (Stuff like paper jar labels will sometimes be caught on the outer mesh strainer.)

The fine mesh filter needs to be cleaned periodically, definitely far more often than yearly! I do it about every two months, since I live alone and don’t need to run it super frequently.
--- End quote ---

Not sure what the confusion is. Yes the filter needs to be cleaned often, most people in north america would hate a product designed in this way, which is why they tend to sell the "grinder" style more here.

--- End quote ---
The “confusion” was your rather incorrect description of how a Bosch dishwasher works.

And it’s not as though we are talking about major debris. Very little gets stuck in the filters. As helius and I have said, the filters are largely self-cleaning.
james_s:

--- Quote from: tooki on December 30, 2020, 05:28:37 pm ---That is not a hypothetical. The wiki article mentions a Swedish town that is encouraging people to get garbage disposals to improve the yield of their new biogas wastewater treatment plant. It being Sweden, I’m pretty sure they already have robust organic waste recovery.

And there’s no correlation between fatbergs and disposal waste, as far as I’ve been able to find. In my experience, most people only use them for vegetable waste, not for greasy meat scraps, since you can’t but bones into them anyway.

--- End quote ---

I occasionally put small bits of meat down mine, but it's just scraps, most of the meat gets eaten, and any larger waste such as stuff that spoils goes into the garbage can because it stinks. I suppose it's theoretically possible that excess food waste going into the sewer could be an issue but I don't see how it's any worse than toilet paper and it certainly isn't in the same class as those stupid wipes that people flush. There is an ample supply of bacteria in the sewer that is happy to feast on the ground up food scraps and the result is not much different than poop. The stuff that comes out of a garbage disposal is a pulverized slurry that has a tremendous amount of surface area for any organisms that want to consume it. Despite being called a "garbage" disposal it's not for disposing of garbage, it's for disposing of food scraps so you don't have to mess with a strainer or pick bits of gross food bits out of the drain after cleaning the dishes.

Apparently you can get toilets that have a garbage disposal like mechanism in them for installations where the toilet is located below the sewer line out of the building, I've never personally seen one though. Some RV and marine toilets have a similar mechanism to grind up the waste as it has to be pumped out of a holding tank at some point.
Monkeh:

--- Quote from: james_s on January 13, 2021, 04:31:39 am ---Apparently you can get toilets that have a garbage disposal like mechanism in them for installations where the toilet is located below the sewer line out of the building

--- End quote ---

That's called a macerator. Actually, so is your garbage disposal.
james_s:

--- Quote from: janoc on December 30, 2020, 09:15:48 pm ---I don't think it is anything to do with the sewage system as such, more the style of plumbing that is common in the houses.

The diameter of the pipe in the kitchen and toilet is different. Kitchen sinks are often connected to much smaller diameter pipes that the ones in the toilets, so they clog much easier, especially if there is any sort of bend or poor gradient somewhere. And I can tell you, having to clear a clog somewhere deep in the wall because some idiot keeps pouring grease or food leftovers down the drain is not fun. That's why you will find removable filters in most kitchen sinks in Europe that are meant to catch that.

Most European houses don't have plumbing dimensioned for solid waste except in the bathrooms.

--- End quote ---

A garbage disposal acts like a centrifugal pump. If I don't run mine for a while eventually the p-trap will get clogged with crumbs and other various muck that settles out. Hit the switch on the disposal for a second or so and whoosh, the pipe is flushed out clean. I have never in my life had to disassemble a kitchen sink drain to clean out a clog. Our drain plumbing has cleanout fittings in a few strategic places in case something does get clogged, they look a bit like a Y coupling with a screw in cap on one side. Only time I've seen one used was when my little brother flushed a toy down the toilet and it got stuck in the pipe but it's nice to know that the access fittings are there.
xmo:
Aren't modern appliances awesome?  I have an LG dishwasher - inverter direct drive - nice and quiet - touch controls with a zillion choices.

It does a great job of getting the dishes clean too. That is, provided that you pick the longest, heavy cleaning cycle and the water pre-heat.  Oh, and as long as you wash everything thoroughly in the sink before you put it in the dishwasher.  Then most of your stuff comes out clean.

The good news is you get re-acquainted with your stuff as you closely inspect each item as you unload the machine.

Not like my old Kitchenaid.  Load it, add detergent, hit start.  Wait till done, unload.  Boring.
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